Nonprofits in District of Columbia

Nonprofits in District of Columbia. Browse 18,651 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

  1. Institute for Health Policy Analysis

    EIN 521865637 · Headquarters: Washington, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  2. Institute for Health Policy Solutions

    EIN 521775476 · Headquarters: WASHINGTON, DC, USA · Health Care · Latest available filing year: 2014 · Primary form: IRS Form 990

  3. Institute for Health Technology Studies C/o Advamed

    EIN 522281033 · Headquarters: WASHINGTON, DC, USA · Health Care · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  4. Institute for Humanist Studies Inc

    EIN 141816621 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. Institute for Industrial Productivity

    EIN 272664900 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2016 · Primary form: IRS Form 990

  6. Institute for Intercultural Relations Incorporated

    EIN 521892430 · Headquarters: Washington, DC, US · Social Science · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  7. Institute for International Law & Human Rights

    EIN 260204031 · Headquarters: WASHINGTON, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Institute for Learning Engagement Advocacy and Dialogue

    EIN 843681051 · Headquarters: Washington, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Institute for Liberty and Democracy Inc

    EIN 300120617 · Headquarters: Washington, DC, US · Human Services · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  10. Institute for Local Self Reliance

    EIN 237394104 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Institute for Market Transformation

    EIN 943241464 · Headquarters: WASHINGTON, DC, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Institute for Market Transformation to Sustainability

    EIN 300321911 · Headquarters: washington, DC, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Institute for Medicaid Innovation Inc

    EIN 311661234 · Headquarters: WASHINGTON, DC, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Institute for Middle East Options Inc

    EIN 454494106 · Headquarters: WASHINGTON, DC, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Institute for Middle East Peace

    EIN 873057857 · Headquarters: Washington, DC, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  16. Institute for Palestine Studies (USA) Inc

    EIN 453166151 · Headquarters: WASHINGTON, DC, USA · Social Science · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Institute for Patient Access

    EIN 453456087 · Headquarters: WASHINGTON, DC, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. Institute for Pension Fund Integrity

    EIN 824758084 · Headquarters: WASHINGTON, DC, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Institute for Polarities of Democracy Inc

    EIN 821047556 · Headquarters: Washington, DC, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Institute for Policy Studies

    EIN 520788947 · Headquarters: WASHINGTON, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Institute for Portfolio Alternatives Inc

    EIN 222597521 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Institute for Progress

    EIN 872449729 · Headquarters: WASHINGTON, DC, USA · Social Science · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Institute for Public Health Innovation

    EIN 463039129 · Headquarters: WASHINGTON, DC, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Institute for Reconstruction & Internat Security Thru Education (Rise Institute)

    EIN 522308013 · Headquarters: WASHINGTON, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Institute for Representative Government Inc

    EIN 521575041 · Headquarters: Washington, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Institute for Research Middle Eastern Policy Inc

    EIN 810586523 · Headquarters: WASHINGTON, DC, USA · Social Science · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. Institute for Responsible Citizenship

    EIN 542034070 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Institute for Responsible Housing Preservation

    EIN 521653533 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Institute for Safer Trucking

    EIN 844943816 · Headquarters: WASHINGTON, DC, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Institute For Science and International Security

    EIN 521809804 · Headquarters: Washington, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Institute for Sound Public Policy Fka Progressives for Immigration Re

    EIN 261634671 · Headquarters: WASHINGTON, DC, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Institute for South American Integration

    EIN 800701957 · Headquarters: Washington DC, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Institute for Stabilization and Transition

    EIN 273539145 · Headquarters: Washington, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  34. Institute for State Effectiveness

    EIN 205968997 · Headquarters: WASHINGTON, DC, USA · International, Foreign Affairs & National Security · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Institute for Strategic Dialogue-us

    EIN 271282489 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Institute for Student Health

    EIN 452454593 · Headquarters: Washington, DC, US · Food, Agriculture & Nutrition · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  37. Institute for Sustainable Infrastructure

    EIN 274568381 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Institute for Sustainable Power Inc

    EIN 841359552 · Headquarters: washington, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  39. Institute for Taiwan American Studies

    EIN 474438703 · Headquarters: WASHINGTON, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Institute for the Advancement of Food and Nutrition Sciences

    EIN 521745052 · Headquarters: WASHINGTON, DC, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Institute for the Advancement of Multicultural & Minority Medicine

    EIN 331052248 · Headquarters: Washington, DC, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Institute for the Mainstreaming of Marginalized Youth

    EIN 204312487 · Headquarters: Washington, DC, US · Youth Development · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  43. Institute for the Preservation of Medical Traditions Inc

    EIN 260864917 · Headquarters: Washington DC, DC, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Institute for the Prevention and Eradication of Violence

    EIN 510392081 · Headquarters: Washington, DC, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Institute for the Study of Modern Authoritarianism

    EIN 861870673 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Institute for the Study of States of Exception

    EIN 994286439 · Headquarters: WASHINGTON, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Institute for the Study of War Inc

    EIN 260273675 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Institute for Truth in Marketing Inc

    EIN 473475721 · Headquarters: Washington, DC, USA · Crime & Legal Related · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  49. Institute for U S Cuba Relations

    EIN 521853655 · Headquarters: Washington, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  50. Institute for U S Law

    EIN 522289216 · Headquarters: WASHINGTON, DC, USA · Crime & Legal Related · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  51. Institute for War & Peace Reporting-us

    EIN 431962561 · Headquarters: WASHINGTON, DC, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Institute for Women's Health

    EIN 872408926 · Headquarters: WASHINGTON, DC, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Institute for Women's Policy Research

    EIN 521549572 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Institute of Asian Scholars

    EIN 462591338 · Headquarters: Washington, DC, USA · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990

  55. Institute of Caribbean Studies

    EIN 521864509 · Headquarters: Washington, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Institute of Classical Architecture and Art Inc

    EIN 202429704 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Institute of Contemporary Psychotherapy Inc

    EIN 521869657 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Institute of Current World Affairs Inc

    EIN 131621044 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  59. Institute of First Principles

    EIN 922760514 · Headquarters: Washington, DC, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Institute of Global and Regional Readiness

    EIN 203843324 · Headquarters: Washington, DC, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Institute of Grace

    EIN 522350837 · Headquarters: Washington, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  62. Institute of Internal Auditors

    EIN 522342416 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  63. Institute of International Finance

    EIN 521289843 · Headquarters: Washington, DC, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Institute of International Trade and Development

    EIN 521180576 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Institute of Liberty Inc

    EIN 863357216 · Headquarters: WASHINGTON, DC, US · Social Science · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  66. Institute of Makers of Explosives

    EIN 130870910 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Institute of Management Consultants USA Inc

    EIN 133532599 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  68. Institute of Peace and Federal Democracy

    EIN 393371645 · Headquarters: Washington, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Institute of Politics Policy and History

    EIN 841785241 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  70. Institute of Scrap Recycling Industries Inc

    EIN 311205596 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Institute of Scrap Recycling Industries Inc - Group Return

    EIN 521572944 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Institute of Social Studies

    EIN 811953879 · Headquarters: Washington, DC, US · Social Science · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  73. Institute of the Ironworking Industry Inc

    EIN 521087974 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2010 · Primary form: IRS Form 990-EZ

  74. Institute of Transportation Engineers Educational Foundation

    EIN 510232220 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Institute of Transportation Engineers Inc

    EIN 530232732 · Headquarters: WASHINGTON, DC, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Institute of Turkish Studies Georgetown University

    EIN 521294029 · Headquarters: WASHINGTON, DC, USA · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  77. Institute of World Affairs

    EIN 237072755 · Headquarters: Washington, DC, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Institute on Religion & Democracy Inc

    EIN 521265221 · Headquarters: WASHINGTON, DC, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Institute on Taxation and Economic Policy

    EIN 042688165 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  80. Institutional Investor Network

    EIN 881016891 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  81. Institutional Limited Partners Association

    EIN 753028947 · Headquarters: WASHINGTON, DC, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Institutional Longevity Markets Association Inc

    EIN 208769162 · Headquarters: Washington, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Insulin Gap Inc

    EIN 834661101 · Headquarters: Washington, DC, US · Health Care · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  84. Insured Retirement Institute Inc

    EIN 061328907 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Int Assoc Of Official Human Rights Agencies

    EIN 520958489 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. Int'l Brotherhood of Teamsters 453 Tcwh

    EIN 520269315 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  87. Int'l Center for Innovations in Civic Participation

    EIN 522316790 · Headquarters: WASHINGTON, DC, USA · Public & Societal Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990

  88. Int'l Standards and Training Alliance (Install)

    EIN 526799457 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Int'l Union for Conservation of Nature & Natural Resources - Us

    EIN 521443147 · Headquarters: WASHINGTON, DC, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  90. Integral Institutions International

    EIN 465384084 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  91. Integrated Design Electronics Academy Public Charter School

    EIN 311573701 · Headquarters: WASHINGTON, DC, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Integrated Living Opportunities

    EIN 472723676 · Headquarters: Washington, DC, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Integrative Healthcare Policy Consortium

    EIN 200219280 · Headquarters: WASHINGTON, DC, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  94. Intellectual Property Owners Association

    EIN 520948513 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Intellectual Property Owners Education Foundation

    EIN 522250648 · Headquarters: WASHINGTON, DC, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Intellectual Property Rights Council Corp

    EIN 463223682 · Headquarters: Washington, DC, US · Animal Related · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  97. Intelligent Car Coalition Inc

    EIN 463283290 · Headquarters: Washington, DC, US · Employment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  98. Intentional Pursuit of Me

    EIN 841727692 · Headquarters: Washington, DC, US · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  99. Intentional Quarterly

    EIN 460790130 · Headquarters: Washington, DC, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  100. Inter Society Color Council

    EIN 146021344 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

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