Unknown & Unclassified nonprofits in Maryland

Unknown & Unclassified nonprofits in Maryland. Browse 10,672 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. North St Johns Swim Club Inc

    EIN 520817121 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. North Village Homes Corporation

    EIN 521150978 · Headquarters: Montgomery Village, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. North White Oak Civic Association

    EIN 237334127 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Northampton High School Class of 1974

    EIN 833350076 · Headquarters: Chesapeake Beach, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Northeast Association of Pre-law Advisors Inc

    EIN 237399236 · Headquarters: FREDERICK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  6. Northeast Community Organization

    EIN 520892160 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. Northeast Creek Conservacy Inc

    EIN 521623234 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Northeast Freedom Area Service Committee of Na Corporation

    EIN 822010067 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  9. Northeastern Maryland Intergroup of Alcoholics Anonymous Inc

    EIN 521356363 · Headquarters: ABERDEEN, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  10. Northeastern Md Technology Council Inc

    EIN 521807245 · Headquarters: ABERDEEN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. Northeastern Political Science Association

    EIN 232684974 · Headquarters: Frostburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Northeasterners Inc

    EIN 521136631 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Northern Anne Arundel County Chamber of Commerce

    EIN 520715089 · Headquarters: Glen Burnie, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. Northern Arizona University PAD Prelaw Chapter

    EIN 943103875 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Northern Arizona University Student Chapter

    EIN 521743313 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  16. Northern Calvert Little League

    EIN 521955556 · Headquarters: DUNKIRK, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  17. Northern Calvert Rotary Foundation Inc

    EIN 522110619 · Headquarters: HUNTINGTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  18. Northern Kentucky University PAD Prelaw Chapter

    EIN 202683223 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Northern Michigan University Student Chapter

    EIN 900046736 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  20. Northern Virginia Knights of the Round Table

    EIN 546076647 · Headquarters: POTOMAC, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Northgate Homes Corporation

    EIN 521048820 · Headquarters: Olney, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Northwest Branch Recreation Inc

    EIN 520801119 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Northwest Citizens Patrol Inc

    EIN 521311158 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Northwestern State University PAD Prelaw Chapter

    EIN 472881699 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Northwestern University PAD Prelaw Chapter

    EIN 912033245 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Northwood Baseball League Inc

    EIN 520792337 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Northwood Club Inc

    EIN 520699686 · Headquarters: HAGERSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  28. Northwood Presbyterian Child Care Center Inc

    EIN 521625602 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  29. Northwood-four Corners Civic Association

    EIN 521375897 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Notre Dame Preparatory School Inc

    EIN 520733735 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  31. Nottingham Improvement Association Inc

    EIN 800913593 · Headquarters: Rosedale, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Nova Espero Co

    EIN 884127063 · Headquarters: Severn, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  33. Now Boarding Corporation

    EIN 812208807 · Headquarters: Capitol Heights, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  34. Nri Helpinghands Inc

    EIN 475385751 · Headquarters: ELLICOTT CITY, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. Nsoromma Services

    EIN 834169674 · Headquarters: Brandywine, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Number Ten Foundation Inc

    EIN 521400791 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. Nurse Practitioner Association of Maryland Inc

    EIN 521798243 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Nurturing Dove Community Center

    EIN 200323666 · Headquarters: SUITLAND, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Nurul Chowdhury Family Foundation Inc

    EIN 393712196 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  40. Oak Grove Cemetery Company

    EIN 520817621 · Headquarters: Woodbine, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Oak Landing Homeowners Assoc Inc C/o J C Property Services Inc

    EIN 521266986 · Headquarters: FALLSTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  42. Oak Lawn Cemetery

    EIN 520432920 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Oakland Lodge No 192 Af & Am Corporation Inc

    EIN 521362253 · Headquarters: OAKLAND, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. Oakland Mills Community Association Inc

    EIN 237350490 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Oakland Mills Nursery Inc

    EIN 520902882 · Headquarters: Columbia, MD, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  46. Oakland Ridge Industrial Center Association Inc

    EIN 521370934 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  47. Oaklandmt Lake Park Lion's Club

    EIN 526066353 · Headquarters: OAKLAND, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Oakview Recreation Corporation

    EIN 520704245 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  49. Oakwood Village Community Association Inc

    EIN 521943589 · Headquarters: Randallstown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Ocean City Aviation Association Incorporated

    EIN 522051977 · Headquarters: Berlin, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Ocean City Md Chamber of Commerce

    EIN 520710234 · Headquarters: OCEAN CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Ocean City Recreation & Parks Advisory Board

    EIN 521404497 · Headquarters: OCEAN CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. Ocean City-berlin-opti Ms Inc

    EIN 521438321 · Headquarters: Ocean City, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Ocean Pines Association Inc

    EIN 520886058 · Headquarters: BERLIN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Ocean Pines Chamber of Commerce Inc

    EIN 521282903 · Headquarters: BERLIN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Ocean Security International

    EIN 465242104 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  57. Octopus Flying Club

    EIN 521831102 · Headquarters: RIVERDALE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Odenton Lodge No 2601 Loyal Order of Moose

    EIN 260027047 · Headquarters: Odenton, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  59. Odenton Temple Holding Corporation

    EIN 237077579 · Headquarters: Odenton, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. Office and Professional Employees International Union Local 2 Afl-cio

    EIN 530120575 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Office of Research Recreation and Welfare Association

    EIN 261918288 · Headquarters: Laurel, MD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  62. Offit Kurman Charitable Foundation Inc

    EIN 823685060 · Headquarters: FULTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  63. Offshore Wind Alliance of Delaware & Maryland Inc

    EIN 863839655 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  64. Ohio College Health Association

    EIN 237289785 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Ohio Northern University PAD Prelaw Chapter

    EIN 260063558 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Ohio State University PAD Prelaw Chapter

    EIN 943103869 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Ohio State University Student Chapter

    EIN 237035713 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. Ohio University PAD Prelaw Chapter

    EIN 943103911 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Oic of Anne Arundel County Inc

    EIN 521116510 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Oklahoma State University PAD Chapter

    EIN 943103979 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Oklahoma State University Student Chapter

    EIN 237379490 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  72. Old Bohemia Historical Society Inc

    EIN 237111584 · Headquarters: Warwick, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  73. Old Farm Swim & Paddle Tennis Club Inc

    EIN 520802035 · Headquarters: ROCKVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  74. Old Forge Flyers Inc

    EIN 521260955 · Headquarters: Smithsburg, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Old Hickory Rod & Gun Club Inc

    EIN 453785449 · Headquarters: frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  76. Old Line League Limited

    EIN 335000089 · Headquarters: JEFFERSON, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Old Line Sailing and Cruising Club Inc

    EIN 471561777 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Old Timers Soccer Association of Maryland Inc

    EIN 522019624 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. Old Whitemarsh Cemetery Trappe Maryland Inc

    EIN 237202490 · Headquarters: EASTON, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Olde Mill Band Boosters Association Inc

    EIN 521444286 · Headquarters: Millersville, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  81. Olde Severna Park Improvement Assoc

    EIN 520664220 · Headquarters: SEVERNA PARK, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. Olf Senior Housing Ii

    EIN 264290198 · Headquarters: Timonium, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Olf Senior Housing Inc

    EIN 262348038 · Headquarters: Timomium, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Oliver Beach Improvement Association Inc

    EIN 526054315 · Headquarters: Chase, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Olney Boys and Girls Community Sports Association Inc

    EIN 237008610 · Headquarters: OLNEY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Olney Chamber of Commerce Inc

    EIN 521390825 · Headquarters: OLNEY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Olney Elementary School PTA

    EIN 521467131 · Headquarters: Olney, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. Olney Mill Community Association Inc

    EIN 520904353 · Headquarters: OLNEY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. Olney Mill Swim Club Inc

    EIN 237155798 · Headquarters: Olney, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Om Connected Incorporated

    EIN 880966333 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  91. Omaha Beach Chapter No 7 Dav Inc Disabled American Veterans

    EIN 521325570 · Headquarters: BOWIE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Omega Psi Phi Franternity

    EIN 854219581 · Headquarters: APG, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Omega Psi Phi Fraternity

    EIN 161707013 · Headquarters: WALDORF, MD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  94. Omega Psi Phi Fraternity

    EIN 237065905 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  95. Omega Psi Phi Fraternity

    EIN 521775542 · Headquarters: Princess Anne, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  96. Omega Psi Phi Fraternity 842 Lambda Gamma Gamma District 2

    EIN 521754383 · Headquarters: Clinton, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  97. Omega Psi Phi Fraternity Inc - Pi Omega Chapter

    EIN 520784751 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  98. Omicron Association of Theta Xi

    EIN 232137337 · Headquarters: PARKTON, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  99. Omicron Kappa Upsilon Honorary Dental Society Supreme

    EIN 237133944 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. On Earth Peace Assembly Inc

    EIN 521223330 · Headquarters: NEW WINDSOR, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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