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. Society of St Vincent De Paul St Aloysius

    EIN 352388716 · Headquarters: Leonardtown, MD, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Somd Loves You Inc

    EIN 850597353 · Headquarters: LEONARDTOWN, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. Somd Pinups for Paws Inc

    EIN 823772546 · Headquarters: leonardtown, MD, US · Animal Related · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  4. Somd Steam

    EIN 823020686 · Headquarters: Leonardtown, MD, US · Youth Development · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  5. Southern Maryland Concert Band Inc

    EIN 521414545 · Headquarters: Leonardtown, MD, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Southern Maryland Rc&d Board Inc

    EIN 521217054 · Headquarters: LEONARDTOWN, MD, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Southern Maryland Rugby Football Association

    EIN 200634580 · Headquarters: LEONARDTOWN, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Southern Maryland Traditional Music and Dance Inc

    EIN 521556721 · Headquarters: LEONARDTOWN, MD, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Southern Maryland Youth Orchestra

    EIN 273962987 · Headquarters: LEONARDTOWN, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990

  10. St Mary's Co Farm Bureau Inc

    EIN 520908278 · Headquarters: Leonardtown, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. St Mary's County Advanced Life Support Unit Inc

    EIN 521313828 · Headquarters: LEONARDTOWN, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. St Mary's County Arts Council Inc

    EIN 521479968 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. St Mary's Holding Company Inc

    EIN 853568342 · Headquarters: LEONARDTOWN, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. St Mary's Nursing Center Foundation Inc

    EIN 521648341 · Headquarters: LEONARDTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. St Mary's Nursing Center Inc

    EIN 522327829 · Headquarters: LEONARDTOWN, MD, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. St Marys Assocation of Supervisors and Adminstrators

    EIN 455172047 · Headquarters: Leonardtown, MD, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. St Marys Council Club Inc

    EIN 201970317 · Headquarters: LEONARDTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. St Marys Council No 1470 Charities

    EIN 331109715 · Headquarters: LEONARDTOWN, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  19. St Marys County Business Education and Community Alliance Inc

    EIN 900389693 · Headquarters: Leonardtown, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. St Marys County Family Daycare Association Inc

    EIN 522123439 · Headquarters: LEONARDTOWN, MD, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  21. St Marys County Genealogical Society Inc

    EIN 521652941 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. St Marys County Historical Society Inc

    EIN 520906455 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. St Marys County Non Public School Bus Contractors Association Inc

    EIN 454334789 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  24. St Marys County Public Schools Retirees Association

    EIN 521767830 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. St Marys County Public Schools Science Technology Engineering & M

    EIN 300115844 · Headquarters: Leonardtown, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. St Marys County Silent Angel Memorial

    EIN 421556521 · Headquarters: Leonardtown, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. St Marys Helping Hands Inc

    EIN 526505953 · Headquarters: LEONARDTOWN, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. St Marys Hospital of St Marys County Inc

    EIN 520619006 · Headquarters: LEONARDTOWN, MD, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. St Marys Library Foundation Inc

    EIN 815074094 · Headquarters: LEONARDTOWN, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. Stmary's Animal Welfare League Inc

    EIN 521679412 · Headquarters: LEONARDTOWN, MD, USA · Animal Related · Latest available filing year: 2022 · Primary form: IRS Form 990

  31. Stmary'ssunshinecenterinc

    EIN 521651507 · Headquarters: LEONARDTOWN, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Sungard Public Sector Users Group Association Inc

    EIN 562189458 · Headquarters: Leonardtown, MD, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  33. The Herbert M & Naomi R Leavitt Family Charitable Trust

    EIN 237891877 · Headquarters: LEONARDTOWN, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  34. To Be Known Ministries Inc

    EIN 993078182 · Headquarters: LEONARDTOWN, MD, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Totally Linking Care in Maryland Inc

    EIN 863295441 · Headquarters: LEONARDTOWN, MD, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. United Way of St Mary's County Maryland Inc

    EIN 521219937 · Headquarters: LEONARDTOWN, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  37. Us Military Vets Somd Mc Southern Maryland

    EIN 811788533 · Headquarters: Leonardtown, MD, US · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  38. Visit St Mary's Md Inc

    EIN 831124743 · Headquarters: LEONARDTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Walden Sierra Corporation

    EIN 521267498 · Headquarters: LEONARDTOWN, MD, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  40. Washington Area Secular Humanists Inc Wash

    EIN 521640229 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Watermelon Inc

    EIN 462094322 · Headquarters: Leonardtown, MD, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Womans Club of St Marys County

    EIN 526048817 · Headquarters: LEONARDTOWN, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Zeta Phi Beta Sorority

    EIN 811365261 · Headquarters: Leonardtown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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