Nonprofits in Washington, District of Columbia
Nonprofits in Washington, District of Columbia. Browse 18,177 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.
Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.
Nonprofit profiles
- National Association of Children's Hospitals Inc
EIN 582176067 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Clean Air Agencies Inc
EIN 421708016 · Headquarters: WASHINGTON, DC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Clean Water Agencies
EIN 237088488 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of College and University Attorneys
EIN 521209127 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of College and University Business Officers
EIN 530259954 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Colored Women's Clubs Inc
EIN 530182943 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Concerned Veterans
EIN 237314478 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Association of Conservation Districts
EIN 741162773 · Headquarters: WASHINGTON, DC, USA · Environment · Latest available filing year: 2023 · Primary form: IRS Form 990
- National Association of Consumer Advocates Charitable Fund Inc
EIN 043309173 · Headquarters: WASHINGTON, DC, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Consumer Advocates Inc
EIN 043239354 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Consumer Bankruptcy Attorneys Inc
EIN 521793623 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Councils on Deve
EIN 161646154 · Headquarters: WASHINGTON, DC, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2023 · Primary form: IRS Form 990
- National Association of Counties
EIN 530190321 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Counties Research Foundation
EIN 530241255 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of County Administrators Inc
EIN 521557554 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- National Association of County Behavioral Health &
EIN 522128967 · Headquarters: Washington, DC, USA · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of County Engineers
EIN 591002720 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of County Veterans Service Officers Inc
EIN 382942975 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Credit Specialists
EIN 911730036 · Headquarters: Washington, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- National Association of Criminal Defense Lawyers Inc
EIN 741916260 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- National Association of Dealer Counsel
EIN 753167591 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Development Organizations
EIN 411261188 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Development Organizations Research Foundation
EIN 521602517 · Headquarters: Washington, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Emergency Department Tech
EIN 275382447 · Headquarters: WASHINGTON, DC, US · Health Care · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- National Association of Ems Physicians
EIN 570820621 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Energy Service Companies
EIN 521318222 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of Enrolled Agents
EIN 237183380 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Epilepsy Centers
EIN 411596217 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Federal Veterinarians
EIN 540675291 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Association of Federally Impacted Schools Inc
EIN 237257037 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Foreign - Trade Zones
EIN 237417702 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Government Archives and Records Administratio
EIN 141665466 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of Government Employees R3-05
EIN 861836219 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- National Association of Health Advocacy Programs
EIN 201284296 · Headquarters: Washington, DC, US · Health Care · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- National Association of Health Services Executives
EIN 621312239 · Headquarters: WASHINGTON, DC, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Healthcare Access Management
EIN 341272668 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Hispanic Journalists
EIN 463985228 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- National Association of Hispanic Journalists Inc
EIN 953927141 · Headquarters: WASHINGTON, DC, USA · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990
- National Association of Hispanic Publications Inc
EIN 113707849 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Home Builders (NAHB)
EIN 880359303 · Headquarters: Washington, DC, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Housing and Redevelopment Officials
EIN 362167803 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of Idea Principal Investigators
EIN 271040652 · Headquarters: WASHINGTON, DC, USA · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of Independent Colleges and Universities
EIN 521125164 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Independent Life Brokerage Agencies
EIN 363209661 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Association of Independent Schools Inc
EIN 042104741 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Investment Companies Inc
EIN 222072345 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Japan-america Societies Inc
EIN 132996432 · Headquarters: WASHINGTON, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of Letter Carriers Branch 142
EIN 520908160 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Letter Carriers Building Corporation
EIN 521400687 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Local Government Environmental Professionals
EIN 521878143 · Headquarters: WASHINGTON, DC, US · Environment · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- National Association of Local Housing Finance Agencies
EIN 521293119 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Local Long-term Care Ombudsmen
EIN 884171121 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- National Association of Long Term Care Administrator Boards
EIN 237155858 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Manufacturers
EIN 131084330 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Margarine Manufacturers
EIN 530114665 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2015 · Primary form: IRS Form 990
- National Association of Minority Contractors Trade Group
EIN 221884963 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- National Association of Minority Contractors Washington Dc Metropol
EIN 300327895 · Headquarters: Washington, DC, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Association of Minority Political Families USA Inc
EIN 521502608 · Headquarters: Washington, DC, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Association of Negro Business and Profess
EIN 340977363 · Headquarters: Washington, DC, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Neighborhoods
EIN 237148216 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of Nonprofit Organizations and Executives
EIN 810932733 · Headquarters: Washington, DC, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- National Association of Nuclear Pharmacies
EIN 274030019 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- National Association of Nurse Practitioners in Women's Health
EIN 133216405 · Headquarters: WASHINGTON, DC, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Association of Nutrition & Aging Services Programs
EIN 042639088 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Parliamentarians
EIN 237128749 · Headquarters: Washington, DC, US · Public & Societal Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- National Association of Parliamentarians
EIN 237403185 · Headquarters: Washington, DC, US · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- National Association of Plant Patent Owners
EIN 530176862 · Headquarters: WASHINGTON, DC, US · Housing & Shelter · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- National Association of Police & Lay Charities
EIN 522016620 · Headquarters: WASHINGTON, DC, USA · Crime & Legal Related · Latest available filing year: 2012 · Primary form: IRS Form 990-EZ
- National Association of Police Athletic Activities Leagues Inc
EIN 221838364 · Headquarters: WASHINGTON, DC, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Pretrial Service Agencies
EIN 237281239 · Headquarters: Washington, DC, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Printing Ink Manufacturers Inc
EIN 131084380 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Railroad Passengers
EIN 362615221 · Headquarters: WASHINGTON, DC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Regional Councils
EIN 526082922 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Regulatory Utility Commissioners
EIN 530204609 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Rehabilitation Providers & Agencies
EIN 311026576 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Secretaries of State
EIN 611332655 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Securities Professionals
EIN 133314582 · Headquarters: Washington, DC, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Security Companies Inc
EIN 133005663 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Shareholder and Consumer Attorneys
EIN 521608589 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- National Association of Social Work Alabama Chapter
EIN 510218196 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 135643515 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Association of Social Workers
EIN 351358425 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 391208402 · Headquarters: WASHINGTON, DC, USA · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 410794059 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 480862101 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 510218285 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 720792896 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 930580885 · Headquarters: WASHINGTON, DC, USA · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers
EIN 953257885 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Ak Chapter
EIN 510218393 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Arkansas Chapter
EIN 710488934 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Ca
EIN 941745038 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Colorado Chapter
EIN 840684219 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Delaware Chapter
EIN 510124059 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Georgia Chapter
EIN 581035373 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Hawaii Chapter
EIN 990153883 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Illinois Chapter
EIN 362317625 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Inc
EIN 450348425 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Inc
EIN 570621228 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- National Association of Social Workers Inc
EIN 591474070 · Headquarters: WASHINGTON, DC, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ