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. Maryland State Division of the Izaak Walton League of America

    EIN 521217637 · Headquarters: Gaithersburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  2. Maryland State Education Association Organization

    EIN 823150729 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  3. Maryland State Family Child Care Association Inc

    EIN 521579040 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Maryland State Grange Inc

    EIN 520682433 · Headquarters: Hagerstown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Maryland State Licensed Beverage Association Inc

    EIN 520699684 · Headquarters: Westminster, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Maryland State Lodge Sons of Italy Foundation Inc

    EIN 521366924 · Headquarters: Perry Hall, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  7. Maryland State Numismatic Association Inc

    EIN 743092527 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  8. Maryland State Quarter Horse Association Inc

    EIN 521572969 · Headquarters: Boonsboro, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Maryland State Squash Racquets Assoc Inc

    EIN 521286519 · Headquarters: LUTHERVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Maryland State Supervisors of Mdot

    EIN 412715087 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Maryland States Attorneys Association Incorporated

    EIN 520909427 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Maryland Sting Inc

    EIN 208333702 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  13. Maryland Symphony Orchestra Inc

    EIN 521259358 · Headquarters: HAGERSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Maryland Taxpayers Association Inc

    EIN 521747070 · Headquarters: Parkville, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  15. Maryland Thoroughbred Horsemen's Association Inc

    EIN 521493207 · Headquarters: OWINGS MILLS, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  16. Maryland Tourism Coalition Inc

    EIN 521287950 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. Maryland Transportation Builders & Materials Association

    EIN 520650723 · Headquarters: GLEN BURNIE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Maryland Troopers Association Inc

    EIN 521207145 · Headquarters: PIKESVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Maryland Troopers Association Inc

    EIN 521584737 · Headquarters: HAGERSTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Maryland Troopers Association Inc

    EIN 521980153 · Headquarters: Bel Air, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Maryland Troopers Association Inc

    EIN 522052240 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Maryland Troopers Association Lodge 13 Inc

    EIN 393555624 · Headquarters: Glen Burnie, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Maryland Turfgrass Council Inc

    EIN 521102990 · Headquarters: WALDORF, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Maryland University of Integrative Health Inc

    EIN 521010577 · Headquarters: LAUREL, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  25. Maryland Veterinary Medical Assoc Inc

    EIN 526061425 · Headquarters: CORDOVA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Maryland Veterinary Medical Association

    EIN 521642739 · Headquarters: ROCKVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Maryland Veterinary Medical Association

    EIN 521655426 · Headquarters: Annapols, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  28. Maryland Vfw District 11

    EIN 900226348 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. Maryland Vietnamese Mutual Association

    EIN 521263654 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Maryland Watermens Assocation Inc

    EIN 520981860 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  31. Maryland Wholesale Cannabis Trade Association

    EIN 814496971 · Headquarters: Princess Anne, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Maryland Wineries Association Inc

    EIN 521705666 · Headquarters: Annapolis, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Maryland Yacht Club Inc

    EIN 520405400 · Headquarters: PASADENA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Maryland Youth and the Law Inc

    EIN 521110381 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Maryland Youth Sports Alliance Inc

    EIN 471090915 · Headquarters: ELLICOTT CITY, MD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  36. Maryland-dc-Delaware USA Softball

    EIN 521344960 · Headquarters: Centerville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Maryland-Delaware-dc Press Association Inc

    EIN 526044092 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Maryland-dist of Columbia-utilities Assn

    EIN 526054289 · Headquarters: Denton, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  39. Maryland-india Business Roundtable Inc

    EIN 760820833 · Headquarters: COLLEGE PARK, MD, USA · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  40. Maryland-national Capital Homecare Association

    EIN 521281148 · Headquarters: COCKEYSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  41. Marylanders for End-of-life Options

    EIN 824046602 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Marylanders for Tax Fairness Inc

    EIN 853589387 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  43. Marypirg Citizen Lobby Inc

    EIN 521818910 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Mason Dixon Chapter of N C R S Inc

    EIN 521729706 · Headquarters: Owings mills, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Mason Dixon Historical Society Inc

    EIN 237309592 · Headquarters: Westminster, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Mason Dixon Post 194

    EIN 520734467 · Headquarters: RISING SUN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Mason Dixon Square Dancers Federation Inc

    EIN 526054285 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  48. Mason-dixon Collie Club Inc

    EIN 272537752 · Headquarters: Ijamsville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Mason-dixon Council Inc Boy Scouts of America

    EIN 520591680 · Headquarters: HAGERSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  50. Mason-dixon Lawnmower Racing Association

    EIN 455197969 · Headquarters: Laurel, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Mason-dixon Trail System Inc

    EIN 232116461 · Headquarters: COLORA, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Masonic Temple Trustees

    EIN 520405683 · Headquarters: Easton, MD, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  53. Massey H Roe Youth Foundation Inc

    EIN 521598800 · Headquarters: Hagerstown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Massok English Immersion School

    EIN 352407493 · Headquarters: Beltsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Mastermind 613 Inc

    EIN 933977997 · Headquarters: Pikesville, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  56. Masters Mates & Pilots Vacation Fund

    EIN 135638830 · Headquarters: LINTHICUM HEIGHTS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Masterworks Chorale of Carroll County Inc

    EIN 521072706 · Headquarters: Westminster, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Matilda and Murray Blackstone Foundation

    EIN 521538719 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  59. Mattawoman Creek Art Center Inc

    EIN 521616574 · Headquarters: MARBURY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. Mattawoman Rod & Gun Club Inc

    EIN 520998920 · Headquarters: LaPlata, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Matthews Nsc Retirement Community Inc

    EIN 922269292 · Headquarters: CATONSVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Matts House Inc

    EIN 261073430 · Headquarters: HALETHORPE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  63. Maugansville Mennonite Home Inc

    EIN 933329140 · Headquarters: Hagerstown, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  64. Mayberry Archers Inc

    EIN 521250447 · Headquarters: Westminster, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Mayfield Woods Middle School Parent Teacher Organization

    EIN 521744508 · Headquarters: Elkridge, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Mayo Civic Association Inc

    EIN 521169266 · Headquarters: Mayo, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Mayo Elementary School Parent-teacher Organization Inc

    EIN 271948514 · Headquarters: Edgewater, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Mbaise Progressive Union Washington Dc Chapter

    EIN 472114154 · Headquarters: Beltsville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Mbef College & Career Academies

    EIN 852010354 · Headquarters: Gaithersburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  70. Mca Educational Activities Inc

    EIN 237181722 · Headquarters: Glyndon, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  71. Mccawley-little Scholarship Fund

    EIN 542043785 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  72. Mcclellan Gun Club Inc

    EIN 237372728 · Headquarters: KEEDYSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  73. Mccormick and Co Employee Benefit Trust

    EIN 526181385 · Headquarters: HUNT VALLEY, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  74. Mckendree Church Cemetery of Harford County Inc

    EIN 521798606 · Headquarters: PYLESVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Mckim Community Association Inc

    EIN 520611110 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Mclee & Associates Inc

    EIN 521978655 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  77. Mcleod Strausbaugh Scholarship Fund Inc

    EIN 521112719 · Headquarters: Chevy Chase, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Md Alpha Advisory Board of Sae

    EIN 475436219 · Headquarters: College Park, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  79. Md Association for Healthcare Recruitment Inc

    EIN 521637048 · Headquarters: Street, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. MD CAN '22 Inc

    EIN 882252839 · Headquarters: Upper Marlboro, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  81. Md Chapt of the Am Coll of Phys Inc

    EIN 521706334 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Md Chapter Icf Inc

    EIN 273885123 · Headquarters: Rosedale, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. MD Congress of Parents and Teachers Assoication In

    EIN 237030497 · Headquarters: Stevensville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Md Coop Guernsey Breeders Assoc Inc

    EIN 520653188 · Headquarters: Hagerstown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Md De Dc Moose Association

    EIN 237147260 · Headquarters: Middle River, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Md Free State Chapter Womens Army Corps Veterans Assn

    EIN 521331778 · Headquarters: Aberdeen, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Md Jci Senate Inc

    EIN 993988423 · Headquarters: DERWOOD, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Md Line Fire Prot Assn Inc

    EIN 521116655 · Headquarters: MARYLAND LINE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  89. Md Rush 99G

    EIN 463924407 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  90. Md Society of Accountants Inc

    EIN 521542954 · Headquarters: OWINGS MILLS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Md-dc-va Chapter of the American Association of Service Coordinator

    EIN 453597434 · Headquarters: BLADENSBURG, MD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  92. Md-de-dc Moose Association Dist 3

    EIN 522056606 · Headquarters: Bel Air, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Md-de-dc Moose Association Dist 6

    EIN 522059717 · Headquarters: Fort Washington, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Mdvecap

    EIN 481293954 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  95. Meac National Alumni Presidents Coalition

    EIN 611735488 · Headquarters: Waldorf, MD, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  96. Mead Family Foundation C/o Intentional Philanthropy Llc

    EIN 521646030 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  97. Meals on Wheels of Cheverly Ecf Gladys Spellman Nursing Qtr

    EIN 237451482 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  98. Meals on Wheels of the College Park Area Inc

    EIN 521003369 · Headquarters: RIVERDALE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Meals on Wheels of Wheaton Inc

    EIN 520948124 · Headquarters: Kensington, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  100. MEBA Medical and Benefits Plan

    EIN 135590515 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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