Unknown & Unclassified nonprofits in District of Columbia
Unknown & Unclassified nonprofits in District of Columbia. Browse 4,522 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 Tbi Traumatic Brain Injury Registry Coalition
EIN 872947772 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Technical Association
EIN 510144210 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- National Theatre of the Deaf Inc
EIN 061051786 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- National Treasury Employee Union Chapter 346
EIN 612245246 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 237383295 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 331037966 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 371755148 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 371770954 · Headquarters: Washingon, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 510178157 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 521328899 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 521516013 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 522267542 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Treasury Employees Union
EIN 530244795 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- National Treasury Employees Union
EIN 550836643 · Headquarters: Washington DC, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 870619253 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 911883325 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- National Treasury Employees Union
EIN 911963005 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- National Treasury Employees Union Chapter 335
EIN 463023637 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- National Treasury Employees Union Chapter 344
EIN 331679307 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- National Treasury Employees Union Chapter 345
EIN 320800128 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- National Treasury Employees Union Chapter 65
EIN 526056488 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- National Treasury Employees Union Chapter No 343
EIN 933150572 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- National Turkey Federation Inc
EIN 362033000 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National US-Arab Chamber of Commercenon
EIN 521529937 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Utility Contractors Association -Washington DC Chapter
EIN 454687582 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Venture Capital Association
EIN 521296842 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Volunteer Fire Council Inc
EIN 391274172 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Water Resources Association
EIN 530116060 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Weather Service Employees Organization
EIN 541018164 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- National Women's Law Center
EIN 521213010 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Womens Education Fund
EIN 237245401 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- National Womens Political Cauc
EIN 520941218 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- National Youth Employment Coalition Inc
EIN 133031098 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Native American Bar Association of Washington Dc
EIN 522048477 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Natl Assn of Private Special Education Centers
EIN 237277189 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Natl Assoc of Private Schools or Exceptional
EIN 237412627 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Natl Capital Area Chapter of Intl Assn of Energy Economists
EIN 521330801 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Natl Capital Coalition to Prevent
EIN 562436821 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Natural Gas Supply Association
EIN 520823671 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Naval Lodge Building Inc
EIN 521927384 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Naval Reactors Dinner Dance Commitee
EIN 800299819 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Naval Sea Systems Command Petty Officers Association
EIN 920670671 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Nbaa Charities
EIN 521900336 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Ncagc Virtual Garden Club
EIN 994116280 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Ncba Clusa
EIN 362007481 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Ncta - the Internet & Television Association
EIN 530222396 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Ndibem Theatrical Dance Production Company Inc
EIN 742119474 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- NDN
EIN 202100126 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Nebraska Leadership Committee
EIN 460897102 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- Neca-ibew National Labor-management Cooperation Committee Trust Fund
EIN 521955494 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Neighborhood Legal Services Program of Dc
EIN 520858001 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Neighborhood Reinvestment Corporation
EIN 521148078 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Nelp Action
EIN 863815059 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Nelson Talbott Foundation
EIN 316039441 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Network
EIN 363569897 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Network Advertising Initiative
EIN 522291538 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Network for Civic Action
EIN 873626015 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Network of Schools of Public Policy Affairs and Administration
EIN 521080991 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Nevadans for Equal Rights
EIN 881927652 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990
- New 32 Project
EIN 393001935 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- New Acres Inc
EIN 992460436 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- New America
EIN 522096845 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- New Approach Advocacy Fund
EIN 842269727 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- New Community for Children Inc
EIN 521611821 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- New Data Project Inc
EIN 821665424 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ
- New Jersey Chapter of Aspa
EIN 521232637 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- New Jersey Mailers Local 1100
EIN 222809296 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- New Life Corporation
EIN 521066186 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- New Mexico Inaugural
EIN 921035597 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- New Rome Council No 554
EIN 824478346 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- New Security Action
EIN 270819099 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- New York Avenue Foundation
EIN 521379938 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- New York Society of Association Executives Inc
EIN 237368380 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- New York State Society of Washington Dc
EIN 536009525 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990
- New York Voting Project Inc
EIN 201498903 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Newsweek Memorial Fund
EIN 472940087 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Next Culture Initiative
EIN 521544086 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Next Level Vision Inc
EIN 861706452 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Nextgen Chamber of Commerce Foundation
EIN 824835903 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- NextGen Competition
EIN 921369862 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Nflpa Former Players Chapter of Minnesota Inc
EIN 273795992 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Nflpa Former Players Minnesota Chap Ter Inc
EIN 392918243 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Nfyi Advocacy Fund
EIN 921018048 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Nga Research & Education Foundation
EIN 541634757 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Ngaus Insurance Trust
EIN 526188375 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- NIAC Action
EIN 473979683 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990
- Nicholas Fund
EIN 472801554 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- No Labels
EIN 271432208 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- No Slots on Main Street
EIN 933340371 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- No Surrender Action Fund Inc
EIN 934526108 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Nolabelscom Inc
EIN 934310372 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Non-violence International
EIN 521645787 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- North American Laminate Flooring Association
EIN 522021174 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- North American Region of the Airports Council International
EIN 530209303 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- North American Securities Administrators Association Inc
EIN 470730228 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- North Carolina Society
EIN 934728776 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Northeast-midwest Institute
EIN 521112174 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Northeasterners Inc
EIN 521179965 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Northwest Washington Little League
EIN 521612231 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Npr Foundation
EIN 521795789 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990