Home Organizations Maryland Every cause Civil rights and advocacy 220 Environment and climate 541 Labor unions and worker centers 474 Housing and homelessness 746 Immigrant services and rights 76 Food banks and hunger 231 Legal aid 36 Voting and civic participation 47 Community health and reproductive care 76 LGBTQ+ services and rights 23 Criminal justice reform and reentry 64 Civil rights and advocacy (220) Organization City Type Revenue Naacp Empowerment Programs IncEIN 13-1084135 · filings Baltimore Charity, 501(c)(3) $60.6 million Catholic Legal Immigration Network IncEIN 52-1584951 · filings Silver Spring Charity, 501(c)(3) $18.9 million National Association For The Advancement Of Colored PeopleEIN 38-4108034 · filings Baltimore Advocacy, 501(c)(4) $15.2 million FairvoteEIN 54-1635649 · filings Silver Spring Charity, 501(c)(3) $7.2 million Maryland Coalition Against Sexual Assault IncEIN 52-1907037 · filings Silver Spring Charity, 501(c)(3) $5.2 million Mid Atlantic Equity Consortium IncEIN 52-1790753 · filings Silver Spring Charity, 501(c)(3) $3.6 million Equal Justice Usa IncEIN 26-1316408 · filings Silver Spring Charity, 501(c)(3) $3.5 million March On Maryland IncEIN 82-0958114 · filings Severna Park Charity, 501(c)(3) $3.5 million Chisholm Legacy Project IncEIN 92-0515371 · filings Baltimore Charity, 501(c)(3) $3.3 million Center For Civic DesignEIN 46-3535619 · filings Cambridge Charity, 501(c)(3) $2.5 million Representwomen IncEIN 82-1933696 · filings Silver Spring Charity, 501(c)(3) $2.1 million Court Appointed Special Advocate -casa- Prince Georges County IncEIN 52-1772617 · filings Uppr Marlboro Charity, 501(c)(3) $1.8 million
The 220 largest →
Environment and climate (541) Organization City Type Revenue Climate United FundEIN 92-2069788 · filings Bethesda Charity, 501(c)(3) $48.9 million National Marine Sanctuary FoundationEIN 94-3370994 · filings Silver Spring Charity, 501(c)(3) $36.0 million Chesapeake Bay Foundation IncEIN 52-6065757 · filings Annapolis Charity, 501(c)(3) $35.4 million Montgomery County Green Bank CorpEIN 81-2179565 · filings Rockville Charity, 501(c)(3) $25.5 million Alliance For The Chesapeake Bay IncEIN 54-1060924 · filings Annapolis Charity, 501(c)(3) $16.0 million Chesapeake Conservancy IncEIN 26-2271377 · filings Annapolis Charity, 501(c)(3) $14.0 million Oceantic Network IncEIN 46-3553839 · filings Baltimore Charity, 501(c)(3) $11.9 million Shorerivers IncEIN 26-3187608 · filings Easton Charity, 501(c)(3) $11.3 million Trees For The Future IncEIN 52-1644869 · filings Silver Spring Charity, 501(c)(3) $9.9 million Environmental Policy Innovation CenterEIN 93-3208396 · filings College Park Charity, 501(c)(3) $7.9 million Southern Maryland Resource Conservation & Development BoardEIN 52-1217054 · filings Leonardtown Charity, 501(c)(3) $7.4 million Wild Earth Allies IncEIN 04-2730954 · filings Chevy Chase Charity, 501(c)(3) $7.0 million
The 300 largest →
Labor unions and worker centers (474) Organization City Type Revenue United Association Of Journeymen & Apprentices Of The Plumbing & PipeEIN 53-0159020 · filings Annapolis Labor organization, 501(c)(5) $185.3 million International Association Of Machinists & Aerospace Grand LodgeEIN 53-6001417 · filings Uppr Marlboro Labor organization, 501(c)(5) $179.2 million Amalgamated Transit UnionEIN 53-6014540 · filings Silver Spring Labor organization, 501(c)(5) $55.8 million International Union Of Painters And Allied TradesEIN 35-0198600 · filings Hanover Labor organization, 501(c)(5) $53.3 million Transportation-communications UnionEIN 31-6000450 · filings Rockville Labor organization, 501(c)(5) $46.3 million International Brotherhood Of Electrical WorkersEIN 53-0088390 · filings Lanham Labor organization, 501(c)(5) $37.9 million International Union Of Elevator ConstructorsEIN 23-0725260 · filings Columbia Labor organization, 501(c)(5) $32.2 million Maryland State Education AssociationEIN 52-0607919 · filings Annapolis Labor organization, 501(c)(5) $28.3 million Seafarers International Union Of North AmericaEIN 11-1690171 · filings Camp Springs Labor organization, 501(c)(5) $24.5 million International Association Of Heat & Frost Insulators & Allied WorkersEIN 53-0088300 · filings Lanham Labor organization, 501(c)(5) $16.0 million Amalgamated Transit UnionEIN 53-0151930 · filings Forrestville Labor organization, 501(c)(5) $15.2 million American Federation Of State County & Municipal EmployeesEIN 46-1117385 · filings Baltimore Labor organization, 501(c)(5) $15.2 million
The 300 largest →
Housing and homelessness (746) Organization City Type Revenue Cedar Crest Village LlcEIN 52-2184915 · filings Catonsville Charity, 501(c)(3) $117.1 million Enterprise Community Investment IncEIN 52-1206840 · filings Columbia Advocacy, 501(c)(4) $116.1 million Baltimore Regional Housing Partnership IncEIN 46-1215609 · filings Baltimore Charity, 501(c)(3) $112.6 million Brooksby Village IncEIN 52-2126755 · filings Catonsville Charity, 501(c)(3) $109.7 million Ann S Choice IncEIN 52-2324152 · filings Catonsville Charity, 501(c)(3) $100.9 million Maris Grove IncEIN 55-0878964 · filings Catonsville Charity, 501(c)(3) $100.3 million Enterprise Community Development IncEIN 52-1888775 · filings Columbia Charity, 501(c)(3) $91.0 million Linden Ponds IncEIN 14-1849849 · filings Catonsville Charity, 501(c)(3) $89.1 million Highland Springs IncEIN 51-0536892 · filings Catonsville Charity, 501(c)(3) $83.2 million Fox Run Village IncEIN 52-2291271 · filings Catonsville Charity, 501(c)(3) $80.0 million Eagles Trace IncEIN 03-0498683 · filings Catonsville Charity, 501(c)(3) $65.4 million Tallgrass Creek IncEIN 87-0765641 · filings Catonsville Charity, 501(c)(3) $59.3 million
The 300 largest →
Immigrant services and rights (76) Organization City Type Revenue Hias IncEIN 13-5633307 · filings Silver Spring Charity, 501(c)(3) $107.6 million Association On American Indian Affairs IncEIN 13-1623902 · filings Clarksville Charity, 501(c)(3) $2.8 million Asylee Women EnterpriseEIN 45-3769025 · filings Baltimore Charity, 501(c)(3) $2.7 million Turkish-american Religious FoundationEIN 13-4194912 · filings Lanham Charity, 501(c)(3) $1.8 million Centro De Apoyo Familiar CafEIN 26-0452137 · filings Riverdale Charity, 501(c)(3) $1.7 million Solutions In Hometown Connections CorpEIN 82-1942936 · filings Greenbelt Charity, 501(c)(3) $1.3 million Luminus Network IncEIN 52-1397480 · filings Columbia Charity, 501(c)(3) $1.1 million Centro Hispano De Frederick IncEIN 30-0430736 · filings Frederick Charity, 501(c)(3) $863,067 Spanish-speaking Community Of Maryland IncEIN 52-0889386 · filings Silver Spring Charity, 501(c)(3) $775,728 New American Community Lending CorporationEIN 88-3474687 · filings Baltimore Charity, 501(c)(3) $673,583 Sisterhood Agenda IncEIN 56-1906766 · filings Owings Mills Charity, 501(c)(3) $430,990 Guadalupe MinistryEIN 87-4832571 · filings Annapolis Charity, 501(c)(3) $422,596
The 76 largest →
Food banks and hunger (231) Organization City Type Revenue Meals On Wheels Of Central Maryland IncEIN 52-6074723 · filings Baltimore Charity, 501(c)(3) $18.5 million Manna Food Center IncEIN 52-1289203 · filings Silverspring Charity, 501(c)(3) $13.6 million Anne Arundel County Food Bank IncEIN 52-1660473 · filings Crownsville Charity, 501(c)(3) $8.9 million Lexington Market IncEIN 52-1163034 · filings Baltimore Charity, 501(c)(3) $6.0 million Sodexo Stop Hunger Foundation IncEIN 31-1652380 · filings North Bethesda Charity, 501(c)(3) $3.9 million Pauls Place IncEIN 52-1372359 · filings Baltimore Charity, 501(c)(3) $3.3 million First Fruits Farm IncEIN 65-1220502 · filings Freeland Charity, 501(c)(3) $3.3 million Upcounty Hub IncEIN 88-2381948 · filings Germantown Charity, 501(c)(3) $3.3 million Nourish Now Foundation IncEIN 45-2404503 · filings Rockville Charity, 501(c)(3) $3.0 million End Hunger In Calvert County IncEIN 80-0456174 · filings Huntingtown Charity, 501(c)(3) $2.5 million Celestial Manna IncEIN 01-0588746 · filings Waldorf Charity, 501(c)(3) $2.4 million Aarons Place IncEIN 84-2099035 · filings Preston Charity, 501(c)(3) $2.0 million
The 231 largest →
Legal aid (36) Organization City Type Revenue Maryland Legal Services CorpEIN 52-1266744 · filings Baltimore Charity, 501(c)(3) $62.0 million Legal Aid Bureau IncEIN 52-0591621 · filings Baltimore Charity, 501(c)(3) $24.5 million Pro Bono Resource Center Of Maryland IncEIN 52-1664796 · filings Baltimore Charity, 501(c)(3) $6.8 million Maryland Volunteer Lawyers Service IncEIN 52-1225979 · filings Baltimore Charity, 501(c)(3) $5.0 million Disability Rights Maryland IncEIN 51-0215570 · filings Baltimore Charity, 501(c)(3) $5.0 million Public Justice Center IncEIN 52-1412226 · filings Baltimore Charity, 501(c)(3) $4.1 million Advancing Real Change IncEIN 35-2518417 · filings Baltimore Charity, 501(c)(3) $1.4 million Community Law Center IncEIN 52-1320934 · filings Baltimore Charity, 501(c)(3) $1.3 million Pro Bono Counseling Project IncEIN 52-1784604 · filings Baltimore Charity, 501(c)(3) $1.2 million Civil Justice IncEIN 52-2102516 · filings Baltimore Charity, 501(c)(3) $1.1 million Freestate Legal Project IncEIN 26-2174290 · filings Baltimore Charity, 501(c)(3) $1.1 million Employment Law Center Of Maryland IncEIN 85-1738414 · filings Urbana Charity, 501(c)(3) $974,163
The 36 largest →
Voting and civic participation (47) Organization City Type Revenue FairvoteEIN 54-1635649 · filings Silver Spring Charity, 501(c)(3) $7.2 million Center For Civic DesignEIN 46-3535619 · filings Cambridge Charity, 501(c)(3) $2.5 million Free Our Vote IncEIN 85-3015345 · filings Bethesda Charity, 501(c)(3) $1.6 million Justice Through Music Project IncEIN 27-0051467 · filings Bethesda Charity, 501(c)(3) $742,603 Black Girls Vote 4 H E R IncEIN 81-2583545 · filings Towson Charity, 501(c)(3) $648,535 Endowment For Middle East TruthEIN 20-4329740 · filings Silver Spring Charity, 501(c)(3) $605,996 Maryland Public Policy InstituteEIN 52-2199055 · filings Middletown Charity, 501(c)(3) $472,932 League Of Women Voters Of Montgomery County Md IncEIN 52-0824326 · filings Rockville Charity, 501(c)(3) $207,317 Step Up MarylndEIN 86-1394429 · filings Baltimore Charity, 501(c)(3) $170,459 Germantown Global Connection IncEIN 99-0811588 · filings Germantown Charity, 501(c)(3) $152,289 Common Ground IncEIN 92-3036895 · filings Mount Airy Charity, 501(c)(3) $148,690 Yuan FoundationEIN 87-4812150 · filings N Bethesda Charity, 501(c)(3) $65,530
The 47 largest →
Community health and reproductive care (76) Organization City Type Revenue Three Lower Counties Community Services IncEIN 52-1860379 · filings Salisbury Charity, 501(c)(3) $129.3 million University Of Maryland Community Medical Group IncEIN 52-1874111 · filings Linthicum Heights Charity, 501(c)(3) $66.5 million Community Clinic IncEIN 52-0988386 · filings Silver Spring Charity, 501(c)(3) $55.0 million National Association Of Community Health Centers IncEIN 52-0939952 · filings Bethesda Charity, 501(c)(3) $46.3 million Choptank Community Health System IncEIN 52-1116591 · filings Denton Charity, 501(c)(3) $43.8 million Planned Parenthood Of Maryland IncEIN 52-0607930 · filings Baltimore Charity, 501(c)(3) $22.6 million Walnut Street Community Health Center IncEIN 02-0575163 · filings Hagerstown Charity, 501(c)(3) $13.4 million West Cecil Health Center IncEIN 20-5860113 · filings Conowingo Charity, 501(c)(3) $11.8 million National Abortion Federation IncEIN 88-3509330 · filings Annapolis Jct Charity, 501(c)(3) $9.3 million Northbay Education IncEIN 52-2112929 · filings North East Charity, 501(c)(3) $8.5 million Owensville Primary Care IncEIN 52-1020937 · filings West River Charity, 501(c)(3) $7.1 million Mobile Medical Care IncEIN 23-7022588 · filings Rockville Charity, 501(c)(3) $6.7 million
The 76 largest →
LGBTQ+ services and rights (23) Organization City Type Revenue The Frederick CenterEIN 46-1705400 · filings Frederick Charity, 501(c)(3) $624,181 Annapolis Pride IncEIN 83-4719430 · filings Annapolis Charity, 501(c)(3) $156,211 Latino Glbt History ProjectEIN 26-0192115 · filings Silver Spring Charity, 501(c)(3) $32,765 Adodi NationalEIN 06-1761644 · filings Temple Hills Charity, 501(c)(3) $24,235 Hagerstown HopesEIN 46-3796596 · filings Hagerstown Charity, 501(c)(3) $12,929 Hsqrab IncEIN 39-4215329 · filings Dunkirk Charity, 501(c)(3) — William And Mary Gala FoundationEIN 45-3938420 · filings Catonsville Charity, 501(c)(3) — Dhs Pride IncorporatedEIN 45-5108909 · filings Silver Spring Charity, 501(c)(3) — Blaq Equity Baltimore IncEIN 47-0870596 · filings Baltimore Charity, 501(c)(3) — Lgbt Fallen Heroes FoundationEIN 47-1607849 · filings Ft Washington Charity, 501(c)(3) — American Gays And Lesbians FoundationEIN 47-4115043 · filings Silver Spring Charity, 501(c)(3) — Interfaith Fairness Coalition Of Maryland IncEIN 52-2143108 · filings Baltimore Charity, 501(c)(3) —
The 23 largest →
Criminal justice reform and reentry (64) Organization City Type Revenue Independence Now IncEIN 52-1891697 · filings Silver Spring Charity, 501(c)(3) $1.7 million Pivot IncEIN 82-3451911 · filings Baltimore Charity, 501(c)(3) $1.6 million From Prison Cells To Phd IncEIN 82-2056611 · filings Baltimore Charity, 501(c)(3) $1.3 million Out For Justice IncEIN 45-2482209 · filings Baltimore Charity, 501(c)(3) $762,908 I M Still Standing Community CorporationEIN 45-3063435 · filings Joppa Charity, 501(c)(3) $630,138 Witness Institute IncEIN 87-3123859 · filings Silver Spring Charity, 501(c)(3) $398,402 Juneteenth Scotland Foundation IncEIN 92-3385761 · filings Gaithersburg Charity, 501(c)(3) $367,099 Maryland Reentry Resource Center IncEIN 47-5132127 · filings Odenton Charity, 501(c)(3) $349,270 White AwakeEIN 81-4400567 · filings Riverdale Pk Charity, 501(c)(3) $325,386 Fr Michaels Mission IncEIN 83-4253414 · filings La Plata Charity, 501(c)(3) $289,115 Dc National Association For The Advancemet Of Returning CitizensEIN 85-0629163 · filings Forestville Charity, 501(c)(3) $175,000 New Start Foundation IncEIN 82-3544429 · filings Hagerstown Charity, 501(c)(3) $93,307
The 64 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.