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Sonoma County is home to 2,332 registered nonprofit agencies that generate approximately $1.9 billion in revenue, according to the Open Data for Nonprofit Research Project spearheaded by Prof. Jesse Lecy at the University of Syracuse, using the most recent tax forms available. With the help of more than 50,000 volunteers, they provide human services, health care and education while also supporting arts and culture. The following are the largest incorporated nonprofits in the county, listed in order of their annual revenue. Kaiser-Permanente and Sutter Medical Center are not included because their parent organizations are located outside Sonoma County.

1. Santa Rosa Memorial Hospital: Santa Rosa, $511 million. Hospital. 707-525-5300, stjosephhealth.org

2. Redwood Credit Union: Santa Rosa, $113 million. Credit Union. 800-479-7928, redwoodcu.org

3.  Petaluma Valley Hospital: Petaluma, $88.1 million. Hospital. 707-525-5300, stjhs.org

4.  Santa Rosa Community Health Centers: Santa Rosa, $51.7 million. Nine centers provide comprehensive health and dental care, regardless of ability to pay, including primary care, obstetrics, family planning, chronic disease management, pediatrics, internal medicine, behavioral health, immunizations, HIV/AIDS prevention/treatment and diabetes education. 707-583-8839, srhealthcenters.org

5. Redwood Empire Food Bank: Santa Rosa, $31.1 million. Largest hunger-relief organization in Sonoma County, distributing 15 million pounds of food annually through 15 programs and 177 partner agencies. 707-523-7900, refb.org

6. Petaluma Health Center: Petaluma, $25.3 million. Primary medical care for all ages, regardless of ability to pay. 707-559-7500, phealthcenter.org

7. Canine Companions for Independence: Santa Rosa, $23 million. Enhances the lives of people with disabilities by providing highly trained assistance dogs and ongoing support to ensure quality partnerships. 707-577-1700, cci.org

8. Sonoma County Indian Health Project Inc.: Santa Rosa, $21.9 million. Improves and maintains a comprehensive health care system to serve the needs and traditional values of the Sonoma County American Indian Community. 707-521-4545, scihp.org

9. Community Foundation Sonoma County: Santa Rosa, $20.3 million. Connecting people, ideas and resources to benefit the community, it receives current and legacy gifts, manages funds, distributes grants for charitable purposes and provides tax advantages not available through private foundations. 707-579-4073, sonomacf.org

10. Alternative Family Services Inc.: Santa Rosa, $19.2 million. Supports vulnerable children and families in need of stability, safety and wellbeing in communities; serves thousands of foster youth in Northern California. 707-576-7700, afs4kids.org

11. Goodwill Industries of the Redwood Empire: Santa Rosa, $18 million. Dedicated to developing and maintaining programs that place people with disabilities and other special needs in productive and competitive jobs. 707-523-0550, gire.org

12. Aid for Starving Children: Santa Rosa, $17.4 million. Food, immunizations, Christian education, water purification and self-help programs for children and their families in Africa and Christian orphanage support, as well as providing aid for single, black working mothers in the U.S. 707-528-3499, aidforstarvingchildren.org

13. Social Advocates for Youth: Santa Rosa, $16.8 million. Helping youth and families throughout Sonoma County by providing housing, counseling, education and employment programs for more than 43 years. 707-544-3299, saysc.org

14. California Human Development Corp.: Santa Rosa, $16.5 million. Creates job training, housing, recovery and other services for farmworkers, day laborers and people with disabilities. 707-523-1155, CaHumanDevelopment.org

15. Community Child Care Council of Sonoma County: Santa Rosa, $15.8 million. Operates 11 Sonoma County child development centers and preschools supporting and providing quality, accessible, affordable preschool and child care services for children, families and child care professionals via education, resources and direct services. 707-544-3077, sonoma4cs.org

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16. West County Health Centers: Guerneville, $15 million. Community health center serving western Sonoma County providing medical, dental and mental health care services; sites include Sebastopol, Occidental, Guerneville and Forestville. 707-869-5977, wchealth.org

17. United Cerebral Palsy of the North Bay: Petaluma, $14.6 million. Promotes and supports a full quality of life for people with cerebral palsy and other disabilities. 707-766-9990, ucpnb.org

18. Sonoma Land Trust: Santa Rosa, $14.5 million. Protects the scenic, natural, agricultural and open landscapes of Sonoma County for the benefit of the community and future generations. 707-526-6930, sonomalandtrust.org

19. Bay Area Environmental Research Institute: Petaluma, $13.8 million. Promotes and conducts research in the environmental sciences, particularly atmospheric science. 707-938-9387, baeri.org

20. Becoming Independent: Santa Rosa, $13.7 million. A community-based service organization established more than 40 years ago to help people with disabilities live meaningful and productive lives in Sonoma, Napa and Solano counties. 707-524-6600, becomingindependent.org

21. Sonoma Academy: Santa Rosa, $13.4 million. Private co-ed college preparatory high school. 707-545-1770, sonomaacademy.org

22. Animal Legal Defense Fund: Cotati, $13.4 million. Protects the lives and advances the interests of animals through the legal system. 707-795-2533, aldf.org

23. Vietnam Veterans of California Inc.: Santa Rosa, $12.4 million. Offers community-based programs and services for veterans and their families. 707-578-2785, vietvets.org

24. Luther Burbank Center for the Arts: Santa Rosa, $12.4 million. North Bay’s premier arts center with performances in music, dance, theater, comedy and spoken word plus education-through-the-arts programs for children and adults; also, facility rentals for community events. 707-527-7006, lutherburbankcenter.org

25. Alliance Medical Center: Healdsburg, $11.9 million. Community health center serving low-income residents of Healdsburg and Windsor with medical and dental services. 707-385-2306, alliancemed.org

26. Sonoma State Enterprises Inc: Rohnert Park, $11.6 million. Provides services to the campus of Sonoma State University. 707-664-3251, sonoma.edu/afd/enterprises

27. Point Blue Conservation Science: Petaluma, $11.6 million., Conserves birds and other wildlife ecosystems through scientific research, restoration, outreach and partnership. 707-781-2554, pointblue.org

28. Roseland Charter School: Santa Rosa, $11.5 million. Charter school. 707-566-9990

29. Larry L. Hillblom Foundation Inc.: Petaluma, $11.5 million. Medical research. 707-762-6691, llhf.org

30. North Bay Rehabilitation Services: Rohnert Park, $11.3 million. Vocational rehabilitation. 707-585-1991, nbrs.org

31. Redwood Community Health Network: Petaluma, $11.1 million. Supports medical clinics with the implementation of comprehensive IT systems, collaborative support service programs and other duties. 707-792-7900, rchc.net

32. Anova Education and Behavior Consultation Inc.: Santa Rosa, $10.4 million. Specialized education institution. 707-527-7032, anovaeducation.org

33. Community Action Partnership of Sonoma Co.: Santa Rosa, $10.1 million. Human services agency founded in 1967 partners with low-income families and individuals to help them achieve economic and social stability; works to reduce poverty, build community and advocate for social and economic justice. 707-544-6911, capsonoma.org

34. Abandoned Children’s Fund: Santa Rosa, $10 million. Medicine and medical supplies for children in Ghana, Haiti, Afghanistan, Ethiopia, Honduras, Philippines, Kenya, Mexico and Uganda. 888-884-0567, abandonedchildrensfund.org

35. Catholic Charities, Diocese of Santa Rosa: Santa Rosa, $9.8 million. A human services agency serving those most in need and of all faiths, primarily seniors, immigrants and families facing poverty and/or homelessness; offices in Sonoma, Napa and Lake counties. 707-528-8712, srcharities.org

36. Association of Behavior Consultants: Santa Rosa, $9.7 million. Provides behavior modification services to developmentally disabled individuals. 707-575-3290

37. Sonoma County Fair and Exposition Inc.: Santa Rosa, $9.7 million. Operates Sonoma County Fairgrounds. 707-545-4200, sonomacountyfair.com

38. St. Joseph Home Care Network: Santa Rosa, $9.2 million. Provides in-home nursing care, therapy, social services and personal assistance. 949-381-4513, stjhs.org

39. Community First Credit Union: Santa Rosa, $8.2 million. Credit union. 707-546-6000, comfirstcu.org

40. TLC Child and Family Services: Sebastopol, $8 million. Foster care. 707-823-7300, tlc4kids.org

41. Summerfield Waldorf School Farm: Santa Rosa, $7.2 million. Private primary and secondary school. 707-575-7194, summerfieldws.org

42. Burbank Housing Development Corporation: Santa Rosa, $7.2 million. Dedicated to increasing the supply of housing in Sonoma County, so that low-income people of all ages, backgrounds and special needs will have a better opportunity to live in decent and affordable housing. 707-526-1020, burbankhousing.org

43. Redwood Empire Electrical Workers Health and Welfare Trust: Santa Rosa, $6.9 million. Provides health care benefits to eligible participants. 707-526-1996

44. Hidden Leaf Foundation: Bodega Bay, $6.8 million. Philanthropic foundation. 707-875-2989, hiddenleaf.org

45. Sonoma State University Academic Foundation Inc.: Rohnert Park, $6.6 million. Administers gifts to support the educational mission of Sonoma State. 707-664-3251, sonoma.edu

46. Sonoma Country Day School: Santa Rosa, $6.4 million. Private primary school. 707-284-3200, scds.org

47. Friends Association of Services for the Elderly: Santa Rosa, $6.4 million. A continuing care retirement community. 707-538-0152, friendshouse.org

48. Sonoma County Tourism Bureau Inc.: Santa Rosa, $6.3 million. Promotes Sonoma County as a premier overnight destination with unique and diverse experiences. 707-522-5800, sonomacounty.com

49. Sonoma County Family YMCA: Santa Rosa, $6.1 million. Offering health and wellness for all ages; programs include child-care, preschool, swimming/safety, camp and caravan and youth sports. 707-545-9622, scfymca.org

50. Santa Rosa Junior College Foundation: Santa Rosa, $6 million. Raises funds to support programs, scholarships, facilities and special projects of Santa Rosa Junior College. 707-527-4348, santarosa.edu/foundation

51. Sonoma Valley Community Health Center: Sonoma, $5.9 million. Health care for those in need, especially the underserved of Sonoma Valley. 707-939-6070, svchc.org

52. Santa Rosa Symphony: Santa Rosa, $5.9 million. Resident orchestra of the Green Music Center, providing musical performances that include classical, pops and choral works, music education for schools and four youth orchestras. 707-546-7097, santarosasymphony.com

53. Boys and Girls Clubs of Central Sonoma County: Santa Rosa, $5.5 million. Enables all young people, especially those most in need, to reach their full potential as productive, caring, responsible citizens; after-school programs and summer programs at locations in Cloverdale, Geyserville, Healdsburg, Windsor, Santa Rosa, Rohnert Park and west Sonoma County. 707-528-7977, bgccsc.org

54. COTS (Committee on the Shelterless): Petaluma, $5.5 million. Shelter, housing, food and transformative programs and services for homeless children and adults. 707-765-6530, cots-homeless.org

55. Drug Abuse Alternatives Center: Santa Rosa, $5.4 million. Turning lives around by providing healthy alternatives to alcohol and drug use. 707-571-2233, daacinfo.org

56. Family Life Center: Petaluma, $5.3 million. Group home, residential treatment facility. 707-795-6954, familylifectr.org

57. Sonoma Humane Society: Santa Rosa, $5.1 million. Receives and administers gifts, program revenues and bequests that are used to support programs benefiting animals and people in Sonoma County. Runs an animal shelter. 707-542-0882, sonomahumane.org

58. Child Parent Institute: Santa Rosa, $5 million. Mission is to end child abuse and strengthen the health of children, parents and families through parent education, therapy services and a school for emotionally challenged children. 707-585-6108, calparents.org

59. Fountaingrove Golf and Athletic Club: Santa Rosa, $5 million. Recreational facility. 707-521-3207, fountaingrovegolf.com

60. Institute of Noetic Sciences: Petaluma, $4.8 million. Research institute studying the mind and consciousness. 707-775-3500, noetic.org

61. Greenacre Homes and School: Sebastopol, $4.6 million. Residential care and education of developmentally disabled boys. 707-823-8722, greenacrehomes.org

62. Sonoma Valley Vintners and Growers Foundation: Sonoma, $4.3 million. Raises money for Sonoma County charities through wine-related activities that are within the expertise of vintners and growers. 707-935-0803, sonomawinecountryweekend.com

63. Coppertower Family Medical Center Inc.: Cloverdale, $4.3 million. Primary medical care provider. 707-894-4229, alexandervalleyhealthcare.org

64. Occidental Arts and Ecology Center: Occidental, $4.2 million. Preserves and restores native and agricultural biodiversity and healthy ecosystems in Northern California. 707-874-1557, oaec.org

65. Pathways Charter School: Rohnert Park, $4.1 million. Supports individualized home-based independent study for students in grades K-12 in five North Bay counties. 707-585-6510, pathwayscharter.org

66. Oakmont Village Association: Santa Rosa, $4.1 million. Provides social and recreational activities for the members of Oakmont Village. 707-539-1611, oakmontvillage.com

67. Council on Aging: Santa Rosa, $4.1 million. Senior services agency providing social, financial, legal and nutrition services to promote well being and maintain independence. 707-525-0143, councilonaging.com

68. Redwood Gospel Mission Inc.: Santa Rosa, $4 million. Services for the homeless and needy. 707-578-1830, srmission.org

69. PDI Surgery Center: Windsor, $3.9 million. Sustainable dentistry resource serving low-income children of Northern California who need safe sedation for dental treatment, also providing prevention education and promoting oral health. 707-836-6560, pdisurgerycenter.org

70. County of Sonoma Public Financing Corporation: Santa Rosa, $3.9 million. Provides facilities for administration of County of Sonoma activities. 707-565-6124

71. Charles M. Schulz Museum and Research Center: Santa Rosa, $3.8 million. Preserves, displays and interprets the art of Charles M. Schulz, offering school and international tours, classes, camps and workshops. 707-579-4452, schulzmuseum.org

72. Volunteer Center of Sonoma County: Santa Rosa, $3.4 million. Matches prospective volunteers with local nonprofit agencies and businesses; also operates community resources programs including legal, literacy and human services information and referral. 707-573-3399, volunteernow.org

73. Abused Children’s Fund Inc.: Santa Rosa, $3.4 million. Youth centers, clubs. 707-483-2939, abusedchildrensfund.org

74. Redwood Community Health Coalition: Petaluma, $3.3 million. A Network of health centers in Sonoma, Napa, Marin and Yolo counties providing high-quality cost-efficient care to all, regardless of ability to pay. 707-285-2967, rchc.net

75. Chinese Christian Mission: Petaluma, $3.3 million. Evangelism among the Chinese community locally and through foreign missions. 707-762-1314, ccmusa.org

76. PEP Housing: Petaluma, $3.3 million. Dedicated to providing limited-income seniors with quality, affordable housing, housing support services and advocacy. 707-762-2336, pephousing.org

77. AG Innovations: Sebastopol, $3.3 million. Creating, growing and supporting citizen-led coalitions to create sustainable food systems. 707-823-6111, aginnovations.org

78. Quarryhill Botanical Garden: Glen Ellen, $3.2 million. Environmental preserve. 707-996-3166, quarryhillbg.org

79. R House: Santa Rosa, $3.1 million. Adolescent substance abuse treatment. 707-571-2215, rhouseinc.org

80. Healdsburg School: Healdsburg, $2.9 million. Private primary school. 707-433-4847, thehealdsburgschool.org

81. Rural California Broadcasting Corp.: KRCB-TV Channel 22: Rohnert Park, $2.8 million. Provides educational television and radio broadcasting in Northern California. 707-584-2000, krcb.org

82. Carpenters Housing Corp.: Santa Rosa, $2.8 million. Public housing for low-income families and the handicapped people of Santa Rosa. 707-546-1797

83. Burbank Housing Management Corporation: Santa Rosa, $2.8 million. Provides management services, compliance and community service activities for affordable housing properties. 707-526-1020, burbankhousing.org

84. Boys and Girls Clubs of Greater Santa Rosa Inc.: Santa Rosa, $2.8 million. Enables all young people, especially those most in need, to reach their full potential as productive, caring, responsible citizens; after-school programs and summer programs at locations in Santa Rosa. 707-542-3249, bgcsr.org

85. University of Northern California Foundation: Rohnert Park, $2.7 million. Supports the University of Northern California, a graduate research institute focusing on biomedical technology and engineering. 707-331-1110, uncm.edu

86. Bauman College: Penngrove, $2.6 million. Educational institution focusing on holistic nutrition and culinary arts. 800-987-7530, baumancollege.com

87. Extended Child Care: Santa Rosa, $2.6 million. Provides before- and after-school programs at 10 sites in the Mark West, Wright and Windsor school districts. 707-545-2402, extcc.org

88. Boys and Girls Clubs of Marin and Southern Sonoma Counties: Petaluma, $2.5 million. Youth programs geared towards fostering positive childhood experiences and attitudes; programs include after-school recreation, drop-in unstructured programs as well as day camps, preschool programs and organized team sports. 707-769-5322, petaluma-marinbgc.org

89. Live Oak Charter School: Petaluma, $2.5 million. Charter school. 707-762-9020, liveoakcharter.org

90. Santa Rosa Chamber of Commerce: Santa Rosa, $2.5 million. Advances educational, cultural and economic interests through the success of businesses of the Santa Rosa community. 707-545-1414, santarosachamber.com

91. United Way of the Wine Country: Santa Rosa, $2.4 million. Serving Sonoma, Mendocino, Lake, Humboldt and Del Norte counties, its mission is to improve lives by mobilizing the caring power of the community through leadership, community engagement and effective investment, including education, financial stability and health initiatives. 707-528-4485, unitedwaywinecountry.org

92. Early Learning Institute: Rohnert Park, $2.4 million. Serving young children with special needs and their families. 707-591-0170, earlylearninginstitute.com

93. Food For Thought: Forestville, $2.3 million. Provides food, nutrition and other services to people affected by HIV/AIDS. 707-887-1647, fftfoodbank.org

94. Grantmakers Concerned with Immigrants and Refugees: Sebastopol, $2.3 million. Addressing the needs of immigrant and refugee populations. 707-824-4374, gcir.org

95. Community Support Network, Santa Rosa: $2.3 million. Provides support, housing and dignity to individuals with mental health challenges. 707-575-0979, communitysupportnet.org

96. Presentation School: Sonoma, $2.3 million. Private primary school. 707-935-0122, presentationschool.com

97. Associated Students of Sonoma State University: Rohnert Park, $2.3 million. Enriches the lives of Sonoma State University students. 707-664-3251

98. Petaluma People Services Center: Petaluma, $2.2 million. Human services agency with a broad scope of services, including counseling, job placement, gang prevention, daily hot meals, rides to the doctor, case management and financial assistance for homelessness prevention. 707-765-8488, petalumapeople.org

99. Children’s Village of Sonoma County: Santa Rosa, $2 million. Provides nurturing, stable family homes in a multigenerational, enriched environment for children and their siblings in foster care. 707-566-7044, thechildrensvillage.com

100. Center for Applied Research Solutions Inc.: Santa Rosa, $2 million. Provides training and technical assistance to major initiatives in mental health, substance abuse, stigma reduction, suicide prevention, and safe and healthy schools and colleges through research, training, and the dissemination of educational materials. 707-568-3800, cars-rp.org

101. Pepperwood Foundation: Santa Rosa, $1.9 million. Operates a 3,2000-acre scientific preserve to engage students, volunteers and scientists in applied conservation. 707-591-9310, pepperwoodpreserve.org

102. Woodland Star Charter School: Sonoma, $1.9 million. Primary charter school. 707-996-3849, woodlandstarschool.org

103. Community and Family Service Agency: Guerneville, $1.9 million. Offering youth and adult employment services, housing and homelessness prevention, mental health counseling and assistance programs, after-school and youth-enrichment programs, emergency food and referral services, prevention programs. 707-829-5717, westcountyservices.org

104. United Camps Conferences and Retreats Inc.: Petaluma, $1.9 million. Creates partnerships to provide life-changing experiences. 707-762-3185, uccr.org

105. Earle Baum Center of The Blind: Santa Rosa, $1.9 million. Provides opportunities for people who are blind or visually impaired to improve their personal, social and economic lives. 707-523-3222, earlebaum.org

106. Odd Fellows Cemetery Association of Santa Rosa Inc.: Santa Rosa, $1.9 million. Cemetery and burial services. 707-542-1586, srmp.org

107. Sonoma Valley Education Foundation: Sonoma, $1.9 million. Primary fundraising and volunteer resource for the Sonoma Valley Unified School District. 707-935-9566, svgreatschools.org

108. Slow Sculpture: Santa Rosa, $1.9 million. Intermediate care facilities serving adults with developmental disabilities. 707-537-7024

109. Inquiring Systems Inc.: Sonoma, $1.8 million. Training and technical assistance in ethically directed business development and management. 707-939-3900, inquiringsystems.org

110. Vadasz Family Foundation: Sonoma, $1.8 million. Philanthropic foundation. 707-938-3014

111. Angela Merici and John Henry Newman Foundation Inc.: Santa Rosa, $1.8 million. Financially supports the educational activities of Cardinal Newman High School. 707-546-6470, cardinalnewman.org

112. Young Women’s Christian Association of Sonoma County: Santa Rosa, $1.8 million. YWCA is dedicated to eliminating racism, empowering women and promoting peace, justice, freedom and dignity for all. 707-303-8413, ywca.org/sonomacounty

113. Pets Lifeline Inc.: Sonoma, $1.8 million. Protecting and improving the lives of cats and dogs in need in the Sonoma Valley through sheltering, adoption, humane education and community programs. 707-996-4577, petslifeline.org

114. Human Awareness Institute: Petaluma, $1.8 million. Educational programs and materials related to developing and maintaining healthy relationships. 707-981-7886, hai.org

115. Sonoma Charter School Inc.: Sonoma, $1.8 million. Charter school. 707-935-4232, sonomacharterschool.org

116. The Mental Insight Foundation: Sonoma, $1.7 million. Foundation. 707-938-8248

117. Ceres Community Project: Sebastopol, $1.7 million. Teens volunteer as gardeners and chefs, preparing nutritious meals delivered to families facing a life-threatening illness. 707-829-5833, ceresproject.org

118. Vineman Inc.: Santa Rosa, $1.7 million. Runs the Vineman Triathalon and other events that encourage healthy living and tourism. 707-528-1630, vineman.com

119. St. Vincent De Paul Society: Rohnert Park, $1.6 million. Supports the needy through low-cost sales and gifts of food and merchandise. 707-584-1579, svdp-sonoma.org

120. Petaluma Educational Foundation: Petaluma, $1.6 million. Supports educational programs for public and private nonprofit schools within the Petaluma area. 707-778-4632, pefinfo.com

121. National Indian Justice Center Inc.: Santa Rosa, $1.6 million. Independent national resource for native communities and tribal governments. Its mission is to design and deliver legal education, research and technical assistance that improves tribal governments and the administration of justice in Indian country. 707-579-5507, nijc.org

122. Children’s Museum of Sonoma County: Santa Rosa, $1.6 million. Inspires children’s creativity and stimulates their curiosity to discover the world through playful exploration of the arts and sciences. 707-546-4069, cmosc.org

123. Community Matters: Sebastopol, $1.6 million. Leader in bullying and violence prevention. 707-823-6159, community-matters.org

124. Sonoma County Vintners: Santa Rosa, $1.6 million. Promotion of Sonoma County wine. 707-522-5840, sonomawine.com

125. Crossing the Jordan Foundation Inc.: Santa Rosa, $1.6 million. Provides housing and job training for women and children in need in Sonoma County. 707-540-5124, crossingthejordan.org

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