Unknown & Unclassified nonprofits

Unknown & Unclassified nonprofits. Browse 557,756 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 Music Educators Association

    EIN 526075299 · Headquarters: Beltsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Maryland Naral Inc

    EIN 521218706 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Maryland National Guard Foundation Inc

    EIN 521798637 · Headquarters: Middle River, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  4. Maryland Native Plant Society

    EIN 521760762 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Maryland Network Against Domestic Violence Inc

    EIN 521233434 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  6. Maryland Nursery Landscape and Greenhouse Association

    EIN 530261561 · Headquarters: BROOKLANDVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  7. Maryland Nurses Association

    EIN 526070413 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Maryland Nurses Association

    EIN 526071882 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Maryland Nurses Association Inc

    EIN 520405035 · Headquarters: ABINGDON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Maryland Nurses Association Inc

    EIN 520554407 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Maryland Nurses Association Inc

    EIN 521096088 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Maryland Nurses Association Inc

    EIN 521096090 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Maryland Nurses Association Inc

    EIN 526059724 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Maryland Nurses Association Inc

    EIN 526078309 · Headquarters: Abingdon, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Maryland Occupational Therapy Association Inc Occupational Thera

    EIN 521097532 · Headquarters: Towson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Maryland Optometric Association

    EIN 520822684 · Headquarters: STEVENSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Maryland Optometric Association Educational Foundation Inc

    EIN 521255996 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Maryland Optometric Association Inc

    EIN 237007931 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Maryland Optometric Association Inc

    EIN 237015590 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Maryland Optometric Association Inc

    EIN 237015668 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Maryland Optometric Association Inc

    EIN 521307970 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Maryland Optometric Association Inc

    EIN 521307976 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Maryland Orthopaedic Association

    EIN 521979179 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Maryland Oystermen Association

    EIN 260844542 · Headquarters: EARLEVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Maryland Pastel Society Inc

    EIN 521138500 · Headquarters: Riderwood, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Maryland Peace Action Education Fund Inc

    EIN 521303680 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Maryland Pharmacists Association Foundation Incorporated

    EIN 237036163 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Maryland Pharmacists Association Inc

    EIN 520543828 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Maryland Philanthropy Network

    EIN 521326863 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Maryland Place Homes Corporation

    EIN 237156038 · Headquarters: Montgomery Village, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Maryland Plumbing Heating Cooling Contractors of Md Inc

    EIN 520690180 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990

  32. Maryland Podiatric Medical Association C/o Richard Bloch the Adams Bldg

    EIN 521633485 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  33. Maryland Praise Revival Mission Inc

    EIN 934400175 · Headquarters: HALETHORPE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Maryland Professional Employees Council

    EIN 911942805 · Headquarters: WINDSOR MILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Maryland Psychological Association

    EIN 520999569 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Maryland Public Interest Law Project Inc

    EIN 521620485 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Maryland Public Interest Research Group Inc

    EIN 521103818 · Headquarters: College Park, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  38. Maryland Radiological Society Inc

    EIN 526040915 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. Maryland Rangers Association Inc

    EIN 521610410 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  40. Maryland Ravens Inc

    EIN 521400324 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Maryland Ready-mix Concrete Association Inc

    EIN 521119344 · Headquarters: FREDERICK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Maryland Rehabilitation Association

    EIN 522057935 · Headquarters: Catonsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  43. Maryland Retailers Alliance Inc

    EIN 520575864 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Maryland Retired School Personnel Association Inc

    EIN 521745921 · Headquarters: ODENTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Maryland Retriever Club Inc

    EIN 521047459 · Headquarters: Cambridge, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Maryland Rifle Club Incorporated

    EIN 526054420 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Maryland Rising - Our Revolution

    EIN 820657190 · Headquarters: Mount Rainier, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Maryland Rural Letter Carriers Ass

    EIN 237288955 · Headquarters: SEAFORD, DE, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Maryland Salem Children's Trust Inc

    EIN 521151566 · Headquarters: FROSTBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Maryland Scholastic Press Advisers Association College of Journalism

    EIN 521528002 · Headquarters: Ocean City, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Maryland School for the Deaf Foundation Inc

    EIN 521566505 · Headquarters: FREDERICK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Maryland School Nutrition Association Inc

    EIN 521374335 · Headquarters: Gaithersburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Maryland School Psychologists Association Inc

    EIN 237315823 · Headquarters: WHITE MARSH, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Maryland Shall Issue Inc

    EIN 204313402 · Headquarters: Parkville, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  55. Maryland Sheep Breeders Assoc Inc

    EIN 521126259 · Headquarters: FINKSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Maryland Sheriffs Association Inc

    EIN 237442984 · Headquarters: Cumberland, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Maryland Shorthorn and Polled Shorthorn Society Inc

    EIN 521061950 · Headquarters: WALKERSVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Maryland Skeet Shooting Association Inc

    EIN 521375445 · Headquarters: Glenn Dale, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Maryland Small Business Week Awards Program Inc

    EIN 521715189 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Maryland Soccer Hall of Fame Inc

    EIN 320337135 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  61. Maryland Society for Disabled Children and Adults Foundation Inc

    EIN 520669694 · Headquarters: FREDERICK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  62. Maryland Society of Accounting and Tax

    EIN 521243590 · Headquarters: Columbia, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Maryland Society of Eye Physicians & Surgeons Inc

    EIN 521284530 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Maryland Society of Health-system Pharmacists

    EIN 237270180 · Headquarters: WESTFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  65. Maryland Society of Land Surveyors

    EIN 237336434 · Headquarters: Fairfax, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Maryland Society of Otolaryngology Incorporated

    EIN 510216689 · Headquarters: Owings Mills, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  67. Maryland Society of Professional Engineers

    EIN 526074236 · Headquarters: ELKRIDGE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Maryland Society of Radiologic Technologists Inc

    EIN 526056052 · Headquarters: DERWOOD, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Maryland Soybean Board

    EIN 521214909 · Headquarters: Cordova, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  70. Maryland Space Business Roundtable Inc

    EIN 521704254 · Headquarters: NEW WINDSOR, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Maryland Speech-Language-Hearing Association

    EIN 520890070 · Headquarters: Purcellville, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  72. Maryland Sporting Dog Association Inc

    EIN 824256587 · Headquarters: Westminster, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  73. Maryland Sports Unlimited Inc

    EIN 201026607 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  74. Maryland State & DC AFL-CIO

    EIN 520691752 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Maryland State Bar Association Inc

    EIN 520815403 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Maryland State Baseball Association Inc

    EIN 521191000 · Headquarters: Bowie, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Maryland State Beauty Culturist Assoc

    EIN 300734017 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  78. Maryland State Chapter Womens Council of Realtors

    EIN 800400589 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  79. Maryland State Council of the Emergency Nurses Association

    EIN 363240424 · Headquarters: GAITHERSBURG, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Maryland State Council of the Knights of Columbis

    EIN 520985836 · Headquarters: Bowie, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Maryland State Dental Association Inc

    EIN 526041784 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  82. 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

  83. Maryland State Education Association Organization

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

  84. 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

  85. Maryland State Funeral Directors Association Inc

    EIN 520405033 · Headquarters: CORNING, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. Maryland State Grange Inc

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

  87. Maryland State Licensed Beverage Association Inc

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

  88. 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

  89. 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

  90. Maryland State Pest Control Association

    EIN 521131956 · Headquarters: FREDERICKSBURG, VA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  91. 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

  92. Maryland State Squash Racquets Assoc Inc

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

  93. Maryland State Supervisors of Mdot

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

  94. Maryland States Attorneys Association Incorporated

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

  95. Maryland Sting Inc

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

  96. Maryland Symphony Orchestra Inc

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

  97. Maryland Taxpayers Association Inc

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

  98. Maryland Theatre Arts Company

    EIN 521396653 · Headquarters: Fort Ashby, WV, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. 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

  100. Maryland Tourism Coalition Inc

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

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