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 4-H Club Foundation Inc

    EIN 990366768 · Headquarters: Cumberland, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Maryland 4-H Club Foundation Inc

    EIN 991024015 · Headquarters: Snow Hill, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Maryland 4-H Club Foundation Inc

    EIN 991579902 · Headquarters: Street, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Maryland 4-H Club Foundation Inc

    EIN 992030100 · Headquarters: Princess Anne, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Maryland 4-H Club Foundation Inc

    EIN 992171753 · Headquarters: Princess Anne, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Maryland 4-H Club Foundation Inc

    EIN 992298512 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Maryland 4-H Club Foundation Inc

    EIN 992302680 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Maryland 4-H Club Foundation Inc

    EIN 992367302 · Headquarters: Street, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Maryland 4-H Club Foundation Inc

    EIN 992568191 · Headquarters: Snow Hill, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Maryland 4-H Foundation

    EIN 883439418 · Headquarters: Prince Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Maryland 4-H Foundation Inc

    EIN 883153642 · Headquarters: Princess Anne, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Maryland 4-H Foundation Inc

    EIN 884066157 · Headquarters: Salisbury, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Maryland 4-H Foundation Inc

    EIN 922269325 · Headquarters: Cockeysville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Maryland 4-H Foundation Inc

    EIN 933529882 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Maryland 4H Club Foundation Inc

    EIN 331937350 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Maryland 4H Club Foundation Inc

    EIN 933993032 · Headquarters: Westminster, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Maryland A Haven For Horses

    EIN 881180572 · Headquarters: Le Roy, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Maryland Academy of Audiology Inc

    EIN 521834695 · Headquarters: MONROVIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. Maryland Academy of Energy And

    EIN 521192220 · Headquarters: baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Maryland Academy of Family Physicians

    EIN 521317156 · Headquarters: THIENSVILLE, WI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  21. Maryland Academy of Nutrition and Dietetics Inc

    EIN 521756108 · Headquarters: Randallstown, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Maryland Academy of Vocal and Dramatic Arts

    EIN 454064038 · Headquarters: Gaithersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  23. Maryland Aerospace Alliance Corporation

    EIN 992527497 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Maryland Agricultural Education Foundation Inc

    EIN 521643073 · Headquarters: HAVRE DE GRACE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Maryland Agriculture Council Inc

    EIN 521181792 · Headquarters: CENTREVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Maryland Agriculture Teachers Association Incorporated

    EIN 521533338 · Headquarters: College Park, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Maryland Air National Guard Nco Club Inc

    EIN 521462725 · Headquarters: MIDDLE RIVER, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Maryland Alliance for Justice Reform

    EIN 811366600 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Maryland American Turkish Association Inc

    EIN 237418683 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Maryland and Dc Society of Genetic Counselors

    EIN 831176921 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Maryland and District of Columbia Society of Clinical Oncology (Mdcsco)

    EIN 521833721 · Headquarters: SEVERNA PARK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Maryland Arabian Horse Association Inc

    EIN 521942104 · Headquarters: Waldorf, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  33. Maryland Arborist Association

    EIN 521217159 · Headquarters: ARNOLD, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Maryland Assessment Group Inc

    EIN 521567556 · Headquarters: New Market, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. Maryland Assn of Nonpublic Special Education Faci

    EIN 521300239 · Headquarters: Towson, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Maryland Assoc for Environmental & Outdoor Educati

    EIN 521900328 · Headquarters: Edgewater, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  37. Maryland Assoc of Hospital Advocates

    EIN 526042574 · Headquarters: ABINGDON, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  38. Maryland Assoc of Nurse Anesthetists

    EIN 521054304 · Headquarters: WORTHINGTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Maryland Assocation of Nursing Students

    EIN 521130268 · Headquarters: Owings Mills, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Maryland Association for Family and Community Education Inc

    EIN 526048410 · Headquarters: Adamstown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Maryland Association for Justice Inc Inc

    EIN 520968523 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Maryland Association for Medical Adult D

    EIN 934720279 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  43. Maryland Association of Adult Community Continuing Education

    EIN 521355700 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Maryland Association of Affirmative Action Officers

    EIN 521264923 · Headquarters: COLUMBIA, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  45. Maryland Association of Area Agencies on Aging Inc

    EIN 521330182 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Maryland Association of Cardio- Vasular and Pulmonary Rehabltn Inc

    EIN 521793042 · Headquarters: WOOLFORD, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Maryland Association of Certified Public Accountants Inc

    EIN 520702331 · Headquarters: TIMONIUM, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Maryland Association of Community Action Agencies

    EIN 521470623 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. Maryland Association of Community Colleges

    EIN 521774900 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Maryland Association of County Agricultural Agents-macaa

    EIN 521486760 · Headquarters: cambridge, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Maryland Association of County Health Officers Inc

    EIN 521105183 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  52. Maryland Association of Elementary School Principals

    EIN 520982092 · Headquarters: Hanover, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Maryland Association of Engineers Inc

    EIN 522063821 · Headquarters: HUNT VALLEY, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  54. Maryland Association of Green Industries Inc

    EIN 521883761 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  55. Maryland Association of Hospital Security & Safety Directors Inc

    EIN 521920806 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  56. Maryland Association of Municipal Wastewater Agencies Inc

    EIN 521978221 · Headquarters: RICHMOND, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Maryland Association of Mutual Insurance Companies

    EIN 526055467 · Headquarters: Hagerstown, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Maryland Association of Professional Electrologists Inc

    EIN 521925456 · Headquarters: FOREST HILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  59. Maryland Association of Realtors Inc

    EIN 520728385 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  60. Maryland Association of Sanitarians Incma

    EIN 521230788 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Maryland Association of School Business Officials Inc

    EIN 237057249 · Headquarters: BEL AIR, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. Maryland Association of Science Teachers

    EIN 521124276 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Maryland Association of Secondary School Principals Inc

    EIN 520974554 · Headquarters: Arnold, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Maryland Association of Youth Services Bureaus Inc

    EIN 521592961 · Headquarters: Greenbelt, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Maryland Automobile Dealers Association

    EIN 530233050 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Maryland Avenue Elementary PTA

    EIN 956208313 · Headquarters: La Mesa, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Maryland Axum Football Club

    EIN 812667523 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  68. Maryland Bankers Association Inc

    EIN 521545256 · Headquarters: GLEN ALLEN, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. Maryland Baptist Church

    EIN 812047707 · Headquarters: CATONSVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  70. Maryland Basketball Officials Assn Inc

    EIN 521991115 · Headquarters: OXON HILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  71. Maryland Bass Chapter State Fed Inc

    EIN 521714035 · Headquarters: WELCOME, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Maryland Beer Wholesalers Assoc Inc C/o Nicholas G Manis

    EIN 521673043 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Maryland Black Caucus Foundati

    EIN 521417532 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Maryland Blue Family Readiness Group

    EIN 811705781 · Headquarters: St Marys, GA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  75. Maryland Board of Football Officials Inc

    EIN 521071263 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  76. Maryland Bowling Proprietors Association

    EIN 521225370 · Headquarters: ARLINGTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Maryland Camaro Club Inc

    EIN 521570365 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  78. Maryland Campaign for a Nuclear Weapon Freeze Inc

    EIN 521302841 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Maryland Cantabile

    EIN 800855566 · Headquarters: Hyattsville, MD, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  80. Maryland Chamber Foundation

    EIN 521557804 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Maryland Chamber of Commerce Inc

    EIN 521784310 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. Maryland Chapter

    EIN 300600924 · Headquarters: ellicott city, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  83. Maryland Chapter Acc Inc

    EIN 521859537 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  84. Maryland Chapter American Society of Landscape Architects

    EIN 521147586 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. Maryland Chapter National Organization for Women Inc

    EIN 521163855 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  86. Maryland Chapter of Financial Managers Society

    EIN 273871020 · Headquarters: Timonium, MD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  87. Maryland Chapter of Healthcare Information and Management Systems Society

    EIN 520040048 · Headquarters: Columbia, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. Maryland Chapter of the American Academy of Pediatrics

    EIN 521630552 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Maryland Chapter of the Appraisal Institute

    EIN 521730934 · Headquarters: Forest Hill, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Maryland Chapter of the Associated General Contractors of America Inc

    EIN 520572224 · Headquarters: LUTHERVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Maryland Chapter of the Association of Legal Administrators

    EIN 521238708 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Maryland Chapter of the National Association of Directors Of

    EIN 521798602 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Maryland Charter Boat Association Inc

    EIN 521771134 · Headquarters: Conowingo, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Maryland Chess Association Inc

    EIN 521035369 · Headquarters: Towson, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  95. Maryland Chiefs of Police Assoc

    EIN 521235249 · Headquarters: WESTMINSTER, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  96. Maryland Children's Educational Defense Fund Inc C/o Gordon Feinblat Llc

    EIN 814063966 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  97. Maryland Chiropractic Association

    EIN 237060635 · Headquarters: FOREST HILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  98. Maryland Christmas Tree Association Inc

    EIN 521551254 · Headquarters: Elkton, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Maryland Club

    EIN 520403190 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Maryland Coalition Against Pornography Inc

    EIN 521642693 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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