Home Organizations District of Columbia Every cause Civil rights and advocacy 332 Environment and climate 368 Labor unions and worker centers 243 Housing and homelessness 169 Immigrant services and rights 29 Food banks and hunger 35 Legal aid 53 Voting and civic participation 95 Community health and reproductive care 14 LGBTQ+ services and rights 25 Criminal justice reform and reentry 42 Civil rights and advocacy (332) Organization City Type Revenue AarpEIN 95-1985500 · filings Washington Advocacy, 501(c)(4) $11.0 billion Our American Future FoundationEIN 88-4235954 · filings Washington Charity, 501(c)(3) $104.4 million The Voter Participation CenterEIN 55-0889748 · filings Washington Charity, 501(c)(3) $58.0 million Human Rights Campaign IncEIN 52-1243457 · filings Washington Advocacy, 501(c)(4) $50.1 million Center For Voter InformationEIN 03-0554750 · filings Washington Advocacy, 501(c)(4) $37.4 million Democracy Matters FoundationEIN 46-3009324 · filings Washington Charity, 501(c)(3) $35.6 million America Votes Education FundEIN 92-1602494 · filings Washington Charity, 501(c)(3) $33.0 million Childrens Defense FundEIN 52-0895622 · filings Washington Charity, 501(c)(3) $31.9 million Third WayEIN 20-1734070 · filings Washington Advocacy, 501(c)(4) $31.7 million Human Rights Campaign FoundationEIN 52-1481896 · filings Washington Charity, 501(c)(3) $28.6 million Priorities UsaEIN 47-4596232 · filings Washington Advocacy, 501(c)(4) $26.5 million Congressional Black Caucus Foundation IncEIN 52-1160561 · filings Washington Charity, 501(c)(3) $25.9 million
The 300 largest →
Environment and climate (368) Organization City Type Revenue New Venture FundEIN 20-5806345 · filings Washington Charity, 501(c)(3) $662.4 million World Wildlife Fund IncEIN 52-1693387 · filings Washington Charity, 501(c)(3) $366.7 million Windward FundEIN 47-3522162 · filings Washington Charity, 501(c)(3) $308.2 million Sixteen Thirty FundEIN 26-4486735 · filings Washington Advocacy, 501(c)(4) $282.2 million Urban Land InstituteEIN 53-0159845 · filings Washington Charity, 501(c)(3) $92.3 million Climate PowerEIN 92-2307261 · filings Washington Advocacy, 501(c)(4) $79.4 million Paintcare IncEIN 27-1354262 · filings Washington Charity, 501(c)(3) $77.1 million League Of Conservation Voters Education FundEIN 52-1379661 · filings Washington Charity, 501(c)(3) $75.2 million American Rivers IncEIN 23-7305963 · filings Washington Charity, 501(c)(3) $53.4 million National Parks Conservation AssociationEIN 53-0225165 · filings Washington Charity, 501(c)(3) $51.6 million U S Green Building Council IncEIN 52-1822816 · filings Washington Charity, 501(c)(3) $50.3 million Ocean Conservancy IncEIN 23-7245152 · filings Washington Charity, 501(c)(3) $48.8 million
The 300 largest →
Labor unions and worker centers (243) Organization City Type Revenue Laborers-employers Benefit Plan Collection TrustEIN 52-6681436 · filings Washington Labor organization, 501(c)(5) $387.5 million Service Employees International UnionEIN 36-0852885 · filings Washington Labor organization, 501(c)(5) $280.8 million United Food And Commercial Workers International UnionEIN 53-0220586 · filings Washington Labor organization, 501(c)(5) $261.8 million International Brotherhood Of Electrical WorkersEIN 52-0951104 · filings Washington Labor organization, 501(c)(5) $227.8 million International Brotherhood Of Electrical WorkersEIN 53-0088380 · filings Washington Labor organization, 501(c)(5) $224.1 million International Brotherhood Of TeamstersEIN 53-0215427 · filings Washington Labor organization, 501(c)(5) $223.8 million American Federation Of TeachersEIN 36-0725240 · filings Washington Labor organization, 501(c)(5) $220.4 million American Federation Of State County & Municipal EmployeesEIN 53-0237789 · filings Washington Labor organization, 501(c)(5) $190.3 million National Football League Players AssociationEIN 52-1169809 · filings Washington Labor organization, 501(c)(5) $163.5 million Communications Workers Of America Afl-cio ClcEIN 53-0246709 · filings Washington Labor organization, 501(c)(5) $147.7 million Laborers International Union Of North AmericaEIN 53-0088501 · filings Washington Labor organization, 501(c)(5) $134.2 million American Federation Of Labor & Congress Of Industrial OrgsEIN 53-0228172 · filings Washington Labor organization, 501(c)(5) $131.1 million
The 243 largest →
Housing and homelessness (169) Organization City Type Revenue Washington Housing Conservancy IncEIN 83-1866109 · filings Washington Charity, 501(c)(3) $53.6 million The Fairness ProjectEIN 37-1779557 · filings Washington Advocacy, 501(c)(4) $33.3 million Stoddard Baptist Global CareEIN 27-2281079 · filings Washington Charity, 501(c)(3) $33.1 million Housing Counseling Services IncEIN 52-0958568 · filings Washington Charity, 501(c)(3) $31.5 million Friendship PlaceEIN 52-1925494 · filings Washington Charity, 501(c)(3) $24.3 million Leadingage IncEIN 13-6213525 · filings Washington Charity, 501(c)(3) $22.4 million Mission First Housing Development CorporationEIN 27-1824650 · filings Washington Charity, 501(c)(3) $21.6 million House Of RuthEIN 52-1054102 · filings Washington Dc Charity, 501(c)(3) $20.0 million The National Alliance To End Homelessness IncorporatedEIN 52-1299641 · filings Washington Charity, 501(c)(3) $14.8 million Nht CommunitiesEIN 31-1662007 · filings Washington Charity, 501(c)(3) $14.6 million Transitional Housing CorporationEIN 52-1675958 · filings Washington Charity, 501(c)(3) $12.5 million Housing Assistance CouncilEIN 52-0939288 · filings Washington Charity, 501(c)(3) $12.1 million
The 169 largest →
Immigrant services and rights (29) Organization City Type Revenue Hispanic Access FoundationEIN 27-2589206 · filings Washington Charity, 501(c)(3) $16.1 million Ayuda IncEIN 52-0971440 · filings Washington Charity, 501(c)(3) $14.2 million The National Alliance For Hispanic HealthEIN 95-2856725 · filings Washington Charity, 501(c)(3) $4.7 million National Immigration Project Of The National Lawyers Guild IncEIN 95-2926663 · filings Washington Charity, 501(c)(3) $4.3 million Refugees InternationalEIN 52-1224516 · filings Washington Charity, 501(c)(3) $4.2 million Justice Without BordersEIN 47-1057411 · filings Washington Charity, 501(c)(3) $3.4 million Detention Watch NetworkEIN 83-3874583 · filings Washington Charity, 501(c)(3) $3.1 million Center For Immigration Studies IncEIN 52-1449368 · filings Washington Charity, 501(c)(3) $2.9 million Spanish Catholic Center IncEIN 52-0980905 · filings Washington Charity, 501(c)(3) $2.8 million ArrivedEIN 81-3205931 · filings Washington Charity, 501(c)(3) $2.6 million Africa Humanitarian Action IncEIN 26-3717985 · filings Washington Charity, 501(c)(3) $1.3 million Hogar Hispano IncEIN 55-0860403 · filings Washington Charity, 501(c)(3) $1.0 million
The 29 largest →
Food banks and hunger (35) Organization City Type Revenue Means Database IncEIN 47-4262060 · filings Washington Charity, 501(c)(3) $161.6 million Capital Area Food BankEIN 52-1167581 · filings Washington Charity, 501(c)(3) $128.3 million Bread For The City IncEIN 52-1138207 · filings Washington Charity, 501(c)(3) $29.1 million Marthas TableEIN 52-1186071 · filings Washington Charity, 501(c)(3) $25.6 million Food Research & Action Center IncEIN 23-7200739 · filings Washington Charity, 501(c)(3) $20.8 million Thrive DcEIN 52-1485474 · filings Washington Charity, 501(c)(3) $2.7 million Alliance To End HungerEIN 20-2803848 · filings Washington Charity, 501(c)(3) $2.3 million Father Mckenna Center IncEIN 46-1406974 · filings Washington Charity, 501(c)(3) $2.0 million Food Recovery Network IncEIN 45-3836775 · filings Washington Charity, 501(c)(3) $1.8 million Breadcoin Foundation LtdEIN 82-3636054 · filings Washington Charity, 501(c)(3) $1.3 million Dcck Support CorporationEIN 87-3441118 · filings Washington Charity, 501(c)(3) $1.2 million Common Good City FarmEIN 80-0365344 · filings Washington Charity, 501(c)(3) $965,535
The 35 largest →
Legal aid (53) Organization City Type Revenue Legal Services CorporationEIN 52-1039060 · filings Washington Charity, 501(c)(3) $572.8 million Kind IncEIN 26-2763038 · filings Washington Charity, 501(c)(3) $79.0 million Democracy Forward FoundationEIN 82-1007988 · filings Washington Charity, 501(c)(3) $65.7 million Namati IncEIN 45-2796201 · filings Washington Charity, 501(c)(3) $61.5 million America First Legal FoundationEIN 86-2190372 · filings Washington Charity, 501(c)(3) $32.0 million Louis D Brandeis Center IncEIN 45-3204617 · filings Washington Charity, 501(c)(3) $18.0 million Capital Area Immigrants Rights CoalitionEIN 52-2141497 · filings Washington Charity, 501(c)(3) $17.3 million Childrens Law Center IncorporatedEIN 52-1961588 · filings Washington Charity, 501(c)(3) $15.1 million Center For Law And Social PolicyEIN 23-7000150 · filings Washington Charity, 501(c)(3) $11.3 million National Legal Aid And Defender AssociationEIN 36-2337880 · filings Washington Charity, 501(c)(3) $8.1 million Washington Legal FoundationEIN 52-1071570 · filings Washington Charity, 501(c)(3) $5.9 million University Legal Services IncEIN 52-0902922 · filings Washington Charity, 501(c)(3) $4.7 million
The 53 largest →
Voting and civic participation (95) Organization City Type Revenue Our American Future FoundationEIN 88-4235954 · filings Washington Charity, 501(c)(3) $104.4 million Consortium For Elections And Political Process StrengtheningEIN 52-1943638 · filings Washington Charity, 501(c)(3) $93.1 million The Voter Participation CenterEIN 55-0889748 · filings Washington Charity, 501(c)(3) $58.0 million America Votes Education FundEIN 92-1602494 · filings Washington Charity, 501(c)(3) $33.0 million Priorities UsaEIN 47-4596232 · filings Washington Advocacy, 501(c)(4) $26.5 million State VoicesEIN 20-1115618 · filings Washington Charity, 501(c)(3) $19.0 million Americans United For Separation Of Church And State IncEIN 53-0184647 · filings Washington Charity, 501(c)(3) $18.6 million Right Vote IncEIN 93-2721813 · filings Washington Advocacy, 501(c)(4) $16.2 million Alliance For Youth OrganizingEIN 46-2465621 · filings Washington Charity, 501(c)(3) $15.3 million All Voting Is LocalEIN 87-3908699 · filings Washington Charity, 501(c)(3) $14.7 million Guarantee Our Votes ProjectEIN 86-2625901 · filings Washington Charity, 501(c)(3) $13.9 million State Democracy Defenders ActionEIN 93-1524544 · filings Washington Advocacy, 501(c)(4) $11.7 million
The 95 largest →
Community health and reproductive care (14) Organization City Type Revenue Unity Health Care IncEIN 52-1572431 · filings Washington Charity, 501(c)(3) $166.8 million Planned Parenthood Association Of Metropolitan Washington D C IncEIN 53-0204621 · filings Washington Charity, 501(c)(3) $21.1 million Femhealth Usa IncEIN 46-4144274 · filings Washington Charity, 501(c)(3) $13.8 million Abortion Care NetworkEIN 26-1972058 · filings Washington Charity, 501(c)(3) $8.2 million Circle Of Hope Health Care ServicesEIN 87-1195144 · filings Washington Charity, 501(c)(3) $1.6 million Grace Reproductive Health ServicesEIN 92-3479502 · filings Washington Charity, 501(c)(3) $1.2 million Capitol Hill Crisis Pregnancy CenterEIN 52-1384736 · filings Washington Charity, 501(c)(3) $750,183 Breast Care For WashingtonEIN 45-5574713 · filings Washington Charity, 501(c)(3) $569,251 Health&helpEIN 81-3432192 · filings Washington Charity, 501(c)(3) $327,159 Court Of Appeals For Veterans Claims Bar AssociationEIN 52-2361046 · filings Washington Charity, 501(c)(3) $38,390 Adams Morgan Community AllianceEIN 82-1834452 · filings Washington Charity, 501(c)(3) $23,420 MamamedsEIN 39-4891112 · filings Washington Charity, 501(c)(3) —
The 14 largest →
LGBTQ+ services and rights (25) Organization City Type Revenue Human Rights Campaign IncEIN 52-1243457 · filings Washington Advocacy, 501(c)(4) $50.1 million Human Rights Campaign FoundationEIN 52-1481896 · filings Washington Charity, 501(c)(3) $28.6 million Lgbtq Victory Institute IncEIN 52-1835268 · filings Washington Charity, 501(c)(3) $3.9 million National Lesbian And Gay Law FoundationEIN 41-1791489 · filings Washington Charity, 501(c)(3) $3.2 million Lpac Action NetworkEIN 84-3759390 · filings Washington Advocacy, 501(c)(4) $491,708 Modern Military Association Of America IncEIN 52-1845000 · filings Washington Charity, 501(c)(3) $372,502 Pride At WorkEIN 52-2217817 · filings Washington Advocacy, 501(c)(4) $363,186 Rogue League Sports IncEIN 82-3566478 · filings Washington Charity, 501(c)(3) $138,001 Rainbow Families DcEIN 20-5149640 · filings Washington Charity, 501(c)(3) $100,867 Equality Chamber FoundationEIN 84-2484671 · filings Washington Charity, 501(c)(3) $54,926 Queer Women Of EsportsEIN 85-0627597 · filings Washington Charity, 501(c)(3) $76 GlifaaEIN 30-1281938 · filings Washington Charity, 501(c)(3) —
The 25 largest →
Criminal justice reform and reentry (42) Organization City Type Revenue Muslim AdvocatesEIN 30-0298794 · filings Washington Charity, 501(c)(3) $7.0 million Asian Pacific American Institute For Congressional Studies IncEIN 52-1917903 · filings Washington Charity, 501(c)(3) $3.7 million Equity In The Center IncEIN 85-0728401 · filings Washington Charity, 501(c)(3) $1.9 million Visitors Services Center IncEIN 52-0906685 · filings Washington Charity, 501(c)(3) $1.8 million Frederick Douglass Project For Justice IncEIN 84-3166690 · filings Washington Charity, 501(c)(3) $1.7 million Open City AdvocatesEIN 20-2325866 · filings Washington Charity, 501(c)(3) $1.6 million Hope Foundation Re-entry Network IncEIN 45-3202505 · filings Washington Charity, 501(c)(3) $1.3 million The National Reentry Network For Returning CitizensEIN 27-2880114 · filings Washington Charity, 501(c)(3) $1.2 million Sikh American Legal Defense And Education Fund IncEIN 04-3382840 · filings Washington Charity, 501(c)(3) $1.1 million Changing PerceptionsEIN 47-5462125 · filings Washington Charity, 501(c)(3) $726,259 Out For SustainabilityEIN 27-1233060 · filings Washington Charity, 501(c)(3) $241,834 Nasp Foundation IncEIN 52-2104838 · filings Washington Charity, 501(c)(3) $205,824
The 42 largest →
Matched by IRS activity code and listed by the revenue on the organization's latest return. Inclusion is not an endorsement; check an organization's own site and filings before you give. Gifts to 501(c)(4) and 501(c)(5) organizations are not tax-deductible.
Source: IRS Exempt Organizations Business Master File . Updated Nov 9, 2026.