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. Prince George's County Medical Society

    EIN 521007010 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  2. Prince George's Philharmonic Inc

    EIN 521086858 · Headquarters: RIVERDALE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Prince George's Property Owners Association Inc

    EIN 550883434 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Prince Georges Baptist Association

    EIN 521176497 · Headquarters: Lanham, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  5. Prince Georges Correctional Officers Association Inc

    EIN 521384786 · Headquarters: Upper Marlboro, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  6. Prince Georges Council No 2809 - Knights of Columbus

    EIN 237108504 · Headquarters: COLLEGE PARK, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Prince Georges County Federation of Parks and Recreation Councils Inc

    EIN 521332653 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Prince Georges County Muslim Council Foundation Inc

    EIN 844323729 · Headquarters: Lanham, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Prince Georges County Police

    EIN 010928044 · Headquarters: Beltsvile, MD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  10. Prince Georges County Unit

    EIN 844983956 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  11. Prince Georges County Volunteer Fire and Rescue Association Md Inc

    EIN 521689206 · Headquarters: Landover Hills, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Prince Georges Fish and Game Club

    EIN 272499314 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  13. Prince Georges Genealogical Society Inc

    EIN 237064117 · Headquarters: BOWIE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Prince Georges Heritage Inc

    EIN 521120218 · Headquarters: Bladensburg, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. Prince Georges Residential Develop Ment Corportion

    EIN 521281129 · Headquarters: Largo, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  16. Prince Georges Senior Provider Network Inc

    EIN 271838834 · Headquarters: Upper Marlboro, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  17. Prince Georges Swimming Pools

    EIN 520676821 · Headquarters: MOUNT RANIER, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Prince Hall E W S Peck Lodge 82

    EIN 300865444 · Headquarters: baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Printing and Graphics Association Midatlantic Inc

    EIN 520513460 · Headquarters: COLUMBIA, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  20. Printing Packaging & Production Workers Union of North America

    EIN 530163355 · Headquarters: RIVERDALE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Printing Packaging & Production Workers Union of North America

    EIN 620247360 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Printing Packaging & Production Workers Union of North America Local 285M

    EIN 520674549 · Headquarters: Silver Spring, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Proctor Kildow Post 71 American Legion Inc

    EIN 520569355 · Headquarters: OAKLAND, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Prodigy Youth Services Inc

    EIN 651223708 · Headquarters: Rosedale, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  25. Professional Animal Workers of Maryland Inc

    EIN 521865705 · Headquarters: Pasadena, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  26. Professional Baseball Groundskeepers Association

    EIN 334513361 · Headquarters: PHOENIX, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Professional Family Providers Association of the Lower Shore

    EIN 261680100 · Headquarters: Salisbury, MD, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  28. Professional Grounds Management Society

    EIN 111720821 · Headquarters: FOREST HILL, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Professional Grounds Management Society

    EIN 521121052 · Headquarters: Severna Park, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Professional Handlers' Association Inc

    EIN 060972068 · Headquarters: OLNEY, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. Professional Paramedics and Emts of Harford County Maryland

    EIN 275514152 · Headquarters: Havre de Grace, MD, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  32. Professional Road Running Org Inc

    EIN 205885799 · Headquarters: BETHESDA, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Professional Staff Association of Md

    EIN 521648334 · Headquarters: Annapolis, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. ProGen Study Groups Inc

    EIN 851067068 · Headquarters: Laurel, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  35. Project 76 - an American Affair

    EIN 237382621 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Project House Inc

    EIN 521712047 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  37. Project Management Institute

    EIN 331026981 · Headquarters: Ijamsville, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Project Management Institute Baltimore Chapter Inc

    EIN 522289630 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  39. Project Management Institute Silver Spring Chapter Inc

    EIN 522310044 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  40. Project Management Institute Southern Maryland Chapter Inc

    EIN 522255880 · Headquarters: PORT REPUBLIC, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Project Millions More Movement Baltimore Inc

    EIN 470954120 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  42. Project New Promise Inc

    EIN 274638097 · Headquarters: ELLICOTT CITY, MD, USA · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  43. Project Zero Inc

    EIN 833674276 · Headquarters: Owings, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  44. Projectivity Group Ii Inc

    EIN 990685957 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Prologue Foundation Inc

    EIN 521689840 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  46. Prologue Inc

    EIN 521278993 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  47. Promise Resource Center Inc

    EIN 521266742 · Headquarters: HUGHESVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  48. Promotion of Worldwide Economic Reform Inc

    EIN 521771254 · Headquarters: Chevy Chase, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  49. Propeller Club of the Us Port of Baltimore

    EIN 520798275 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  50. Property & Casualty Insurance Guaranty Corporation

    EIN 521463854 · Headquarters: TOWSON, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  51. Property Management Association

    EIN 521116559 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Prospect Hill Cemetery of Towson Inc

    EIN 521369427 · Headquarters: RIDERWOOD, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  53. Prospect Hill Estate Subdivision Landowners Association Inc

    EIN 660710649 · Headquarters: Crownsville, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Prospect Plantation West Homeowners' Association T/a Prospect Bay Country Cl

    EIN 521186089 · Headquarters: GRASONVILLE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Providence Club Inc

    EIN 520813435 · Headquarters: ANNAPOLIS, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. Providing Resources Aboard For Youth International Ministries Inc

    EIN 833122032 · Headquarters: Clinton, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Provinces Civic Association Inc

    EIN 237348974 · Headquarters: Jessup, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Proximity Project Inc

    EIN 471010368 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  59. Proyecto Enlaces Americanos Proena Inc

    EIN 853849622 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Psi Chi the International Honor Society in Psychology

    EIN 237429760 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Psi Chi the International Honor Society in Psychology

    EIN 237429776 · Headquarters: Westminster, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Psi Chi the International Honor Society in Psychology

    EIN 521193105 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Psi Chi the International Honor Society in Psychology

    EIN 521193107 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Psi Chi the International Honor Society in Psychology

    EIN 521575250 · Headquarters: St MaryS City, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Psi Chi the International Honor Society in Psychology

    EIN 821509433 · Headquarters: Bethesda, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Psi Chi the National Honor Society in Psychology

    EIN 237097212 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Psi Chi the National Honor Society in Psychology

    EIN 237333564 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Psi Chi the National Honor Society in Psychology

    EIN 237407011 · Headquarters: Salisbury, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Psi Chi the National Honor Society in Psychology

    EIN 237429764 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Psi Chi the National Honor Society in Psychology

    EIN 521072080 · Headquarters: Frostburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Psi Chi the National Honor Society in Psychology

    EIN 521105230 · Headquarters: Emmitsburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Psi Chi the National Honor Society in Psychology

    EIN 521269163 · Headquarters: Chestertown, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Psi Chi the National Honor Society in Psychology

    EIN 521539714 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Psi Chi the National Honor Society in Psychology

    EIN 521539717 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Psi Chi the National Honor Society in Psychology

    EIN 521575223 · Headquarters: Towson, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Psi Chi the National Honor Society in Psychology

    EIN 521764936 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Psi Chi the National Honor Society in Psychology

    EIN 521764937 · Headquarters: Tacoma Park, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Psi Chi the National Honor Society in Psychology

    EIN 550917220 · Headquarters: Stevenson, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Psi Chi the National Honor Society in Psychology

    EIN 562651190 · Headquarters: Adelphi, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. PTA at Crofton Middle School

    EIN 815203129 · Headquarters: GAMBRILLS, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  81. Pta at Deer Park Elementary School

    EIN 522053343 · Headquarters: Owings Mills, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. PTA at Deer Park Middle Magnet Scho Ol

    EIN 994468776 · Headquarters: RANDALLSTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. Pta at Georgetown East

    EIN 413193791 · Headquarters: Annapolis, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Pta at Roland Park Inc

    EIN 823242738 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. Pta Council of Howard County Inc

    EIN 237031159 · Headquarters: Columbia, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Pta Delawara Congress

    EIN 822811164 · Headquarters: Hampstead, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Pta Delaware Congress

    EIN 020603298 · Headquarters: Fulton, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Pta Delaware Congress

    EIN 030449981 · Headquarters: Seabrook, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Pta Delaware Congress

    EIN 043798279 · Headquarters: Brunswick, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  90. Pta Delaware Congress

    EIN 050534692 · Headquarters: Ellicott City, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Pta Delaware Congress

    EIN 113645279 · Headquarters: Oxon Hill, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Pta Delaware Congress

    EIN 202852405 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Pta Delaware Congress

    EIN 203162703 · Headquarters: Monkton, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Pta Delaware Congress

    EIN 203425631 · Headquarters: Pikesville, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  95. Pta Delaware Congress

    EIN 203459766 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Pta Delaware Congress

    EIN 204731722 · Headquarters: Clarksburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Pta Delaware Congress

    EIN 204954343 · Headquarters: Clarksburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Pta Delaware Congress

    EIN 205263371 · Headquarters: GERMANTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Pta Delaware Congress

    EIN 205388929 · Headquarters: Fort George G Meade, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Pta Delaware Congress

    EIN 208538102 · Headquarters: PASADENA, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

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