Nonprofits in Leonardtown, Maryland

Nonprofits in Leonardtown, Maryland. Browse 143 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. 4-H Clubs & Affiliated 4-H Organizations

    EIN 383769678 · Headquarters: Leonardtown, MD, US · Youth Development · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  2. A Message of Hope Cancer Fund

    EIN 261636997 · Headquarters: Leonardtown, MD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Admirals Select Lacrosse

    EIN 831812408 · Headquarters: LEONARDTOWN, MD, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Amateur Athletic Union of the United States

    EIN 261881357 · Headquarters: Leonardtown, MD, US · Recreation & Sports · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  5. Amateur Athletic Union of the United States Inc

    EIN 462907301 · Headquarters: LEONARDTOWN, MD, US · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  6. American Legion

    EIN 510522995 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Animal Rescue & Outreach Organization

    EIN 334982804 · Headquarters: Leonardtown, MD, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Aposteriori

    EIN 932168452 · Headquarters: Leonardtown, MD, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Babywearing International Inc

    EIN 461247367 · Headquarters: Leonardtown, MD, US · International, Foreign Affairs & National Security · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  10. Boundless Expectations Inc

    EIN 475401704 · Headquarters: LEONARDTOWN, MD, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  11. Bread of Life Ctr for PeaceHeavenly Presents Inc

    EIN 521784898 · Headquarters: Leonardtown, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Breton Bay Civic Association Inc

    EIN 521332603 · Headquarters: Leonardtown, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Bridges of St Marys County Inc

    EIN 271018472 · Headquarters: Leonardtown, MD, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  14. Cedar Lane Senior Living Community I Inc

    EIN 237136808 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Cedar Lane Senior Living Community Ii Inc

    EIN 521330040 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. Cedar Lane Senior Living Community Iii Inc

    EIN 522069016 · Headquarters: LEONARDTOWN, MD, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Chesapeake Orchestra Inc

    EIN 300713937 · Headquarters: Leonardtown, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  18. Childrens Literacy Program Fund

    EIN 521840656 · Headquarters: Leonardtown, MD, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Citizens for American Security

    EIN 472211114 · Headquarters: LEONARDTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  20. Clash of the Kingdoms Ministries Inc

    EIN 334720906 · Headquarters: LEONARDTOWN, MD, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  21. Coalition for Quality Care

    EIN 451828112 · Headquarters: Leonardtown, MD, US · Human Services · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  22. Collective Education Association of St Marys County

    EIN 521600939 · Headquarters: LEONARDTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  23. Colors of Love Corporation

    EIN 522318918 · Headquarters: Leonardtown, MD, US · Human Services · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  24. Community Mediation of St Marys County Inc

    EIN 203210686 · Headquarters: Leonardtown, MD, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Community Television in St Marys Inc

    EIN 522324578 · Headquarters: Leonardtown, MD, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  26. Education Association of St Mary's County

    EIN 521052839 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Education with No Borders Organization Inc

    EIN 453711520 · Headquarters: Leonardtown, MD, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  28. Elijah International Foundation Inc

    EIN 300527883 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  29. Federal Managers Association

    EIN 611520656 · Headquarters: Leonardtown, MD, US · Environment · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  30. Federated Garden Clubs of Maryland Inc

    EIN 521082699 · Headquarters: Leonardtown, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Footprints for Faith

    EIN 264605615 · Headquarters: Leonardtown, MD, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Foundation of Leonardtown Rotary Inc

    EIN 521973908 · Headquarters: Leonardtown, MD, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Francis F & Margaret L Greenwell Catholic School Scholarship Foun

    EIN 882252074 · Headquarters: LEONARDTOWN, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  34. Fraternal Order of Police Maryland Natural Resources Police8

    EIN 237585912 · Headquarters: LEONARDTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Fraternal Order of Police St Mary's County Lodge 7 Inc

    EIN 510177869 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Friends of Cedar Lane Inc

    EIN 205555024 · Headquarters: LEONARDTOWN, MD, USA · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  37. Friends of the St Marys County Library Inc

    EIN 521833601 · Headquarters: Leonardtown, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Garvey Senior Activity Center Council Inc

    EIN 474791332 · Headquarters: Leonardtown, MD, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  39. Health Share of St Mary's Inc

    EIN 521765607 · Headquarters: LEONARDTOWN, MD, USA · Health Care · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  40. Her Story Is My Story Incorporated

    EIN 463335043 · Headquarters: Leonardtown, MD, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Hope in Harmony Inc

    EIN 932593505 · Headquarters: Leonardtown, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Hospice of St Marys Inc

    EIN 522153926 · Headquarters: LEONARDTOWN, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. International Association of Lions

    EIN 526062692 · Headquarters: LEONARDTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. International Brotherhood of Local 1718

    EIN 237215129 · Headquarters: Leonardtown, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. International Mountain Bicycling Association

    EIN 454675384 · Headquarters: Leonardtown, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Knights of Columbus

    EIN 237546801 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Knights of Columbus

    EIN 521801021 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Knights of Columbus Council #1470

    EIN 237209415 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Leadership Southern Maryland Inc

    EIN 262989381 · Headquarters: LEONARDTOWN, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. League of Women Voters of St Marys County

    EIN 320314560 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  51. Leonard Hall Junior Naval Academy Inc

    EIN 520957133 · Headquarters: LEONARDTOWN, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Leonardtown Business Association

    EIN 462937205 · Headquarters: LEONARDTOWN, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Leonardtown High School Band Boosters

    EIN 521364330 · Headquarters: LEONARDTOWN, MD, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Leonardtown Lions Club Charitable Foundation Inc

    EIN 412269574 · Headquarters: LEONARDTOWN, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. Leonardtown Raiders Football Quarterback Club Inc

    EIN 320377595 · Headquarters: Leonardtown, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Leonardtown Volunteer Fire Department Inc

    EIN 526037021 · Headquarters: LEONARDTOWN, MD, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Leonardtown Volunteer Rescue Squad Inc

    EIN 521202957 · Headquarters: LEONARDTOWN, MD, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Leonardtown Wildcat Youth Sports Inc

    EIN 273367006 · Headquarters: Leonardtown, MD, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. Local Management Board of St Marys

    EIN 522088253 · Headquarters: Leonardtown, MD, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  60. Logan C Caton Charitable Foundation

    EIN 800698623 · Headquarters: Leonardtown, MD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Maryland 4-H Club Foundation Inc

    EIN 271916902 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Maryland 4-H Club Foundation Inc

    EIN 300705987 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Maryland 4-H Club Foundation Inc

    EIN 463149563 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  64. Maryland 4-H Club Foundation Inc

    EIN 473585459 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Maryland 4-H Club Foundation Inc

    EIN 474015056 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Maryland 4-H Club Foundation Inc

    EIN 474298040 · Headquarters: Leonardtown, MD, US · Youth Development · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  67. Maryland 4-H Club Foundation Inc

    EIN 522128188 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Maryland 4-H Club Foundation Inc

    EIN 522150156 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Maryland 4-H Club Foundation Inc

    EIN 522152219 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Maryland 4-H Club Foundation Inc

    EIN 522299711 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Maryland 4-H Club Foundation Inc

    EIN 830443783 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Maryland 4-H Club Foundation Inc

    EIN 862286863 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Maryland 4-H Club Foundation Inc

    EIN 923669834 · Headquarters: Leonardtown, MD, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Maryland Association of Pupil Personnel

    EIN 521270939 · Headquarters: Leonardtown, MD, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  75. Maryland Correctional Administrators Association

    EIN 521790321 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. Mid Atlantic Resource Conservation and Development Association

    EIN 222637414 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  77. Miltek Inc

    EIN 392384782 · Headquarters: Leonardtown, MD, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Moll Dyer Foundation

    EIN 934128934 · Headquarters: Leonardtown, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. National Association of Letter Carriers

    EIN 526074599 · Headquarters: Leonardtown, MD, US · Employment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  80. National Veteran Hunters Associatio N Inc

    EIN 393978913 · Headquarters: Leonardtown, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. On Our Own of St Mary's Inc

    EIN 522148594 · Headquarters: Leonardtown, MD, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Operation Warrior Refuge

    EIN 463538724 · Headquarters: Leonardtown, MD, US · Health Care · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  83. Optimist International

    EIN 521341719 · Headquarters: Leonardtown, MD, US · Youth Development · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  84. Patuxent Tidewater Land Tr

    EIN 522005066 · Headquarters: Leonardtown, MD, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Pflag Southern Maryland

    EIN 823928873 · Headquarters: Leonardtown, MD, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Pta Delaware Congress

    EIN 237031337 · Headquarters: Leonardtown, MD, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Pta Delaware Congress

    EIN 475318008 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Pta Delaware Congress

    EIN 522055800 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Pta Maryland Congress of Parents & Teachers Inc

    EIN 911882926 · Headquarters: Leonardtown, MD, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  90. Rockfish Swimming Inc

    EIN 473071003 · Headquarters: LEONARDTOWN, MD, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  91. Roll Out Racing

    EIN 853003367 · Headquarters: LEONARDTOWN, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Rotary International

    EIN 521946210 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Saint Mary's County Fair Association Inc

    EIN 521414605 · Headquarters: LEONARDTOWN, MD, USA · Recreation & Sports · Latest available filing year: 2022 · Primary form: IRS Form 990

  94. Saint Marys Girls Lacrosse League

    EIN 043766452 · Headquarters: LEONARDTOWN, MD, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  95. Second Hope Rescue Inc

    EIN 208217642 · Headquarters: Leonardtown, MD, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Serra International

    EIN 521950608 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Shop with a Cop Inc

    EIN 113709054 · Headquarters: LEONARDTOWN, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. Slack Farms Foundation Inc

    EIN 832290326 · Headquarters: Leonardtown, MD, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  99. Sms Sting Classic Inc

    EIN 851158117 · Headquarters: Leonardtown, MD, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Society Hill Garden Club of Breton Bay

    EIN 921078464 · Headquarters: LEONARDTOWN, MD, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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