Unknown & Unclassified nonprofits in Mississippi

Unknown & Unclassified nonprofits in Mississippi. Browse 6,003 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. Amercian Legion

    EIN 646035658 · Headquarters: Eupora, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. American Academy of Family Phy-ms Chaptr Ms Academy of Family Physicians

    EIN 646025386 · Headquarters: RIDGELAND, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. American Art Therapy Association Inc

    EIN 640897943 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Association of Family and Consumer Sciences

    EIN 646152638 · Headquarters: Hernando, MS, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  5. American Association of University Women

    EIN 237009734 · Headquarters: columbus, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  6. American Association of University Women

    EIN 640588060 · Headquarters: Belden, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. American Association of University Women

    EIN 640699601 · Headquarters: Starkville, MS, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  8. American Association of University Women

    EIN 646024998 · Headquarters: Cleveland, MS, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  9. American Association of University Women Inc

    EIN 646025003 · Headquarters: Clinton, MS, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  10. American Association of Zoo Keepers

    EIN 872514569 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. American Association of Zoo Keepers

    EIN 923404465 · Headquarters: Hattiesburg, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. American Chemical Society

    EIN 640703031 · Headquarters: Oxford, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. American Chemical Society

    EIN 646025010 · Headquarters: Clinton, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. American Christian Association

    EIN 471558647 · Headquarters: HATTIESBURG, MS, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  15. American Civil Liberties Union

    EIN 640509917 · Headquarters: JACKSON, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. American Civil Liberties Union of Mississippi Foundation Inc

    EIN 640694013 · Headquarters: JACKSON, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. American College of Dentists

    EIN 521489498 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. American College of Emergency Physicians

    EIN 640718390 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. American College of Health Care Administrators Inc

    EIN 822583075 · Headquarters: BOONEVILLE, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. American College of Physicians Ms Chapter

    EIN 640668332 · Headquarters: MADISON, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. American Concrete Pressure Pipe Association

    EIN 362142967 · Headquarters: HATTIESBURG, MS, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. American Council of Engineering Companies - Mississippi

    EIN 582180041 · Headquarters: JACKSON, MS, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  23. American Federation of Government

    EIN 646039728 · Headquarters: Biloxi, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. American Federation of Government Employees

    EIN 237167695 · Headquarters: VICKSBURG, MS, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  25. American Federation of Government Employees

    EIN 264571984 · Headquarters: COLUMBUS, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. American Federation of Government Employees

    EIN 273389480 · Headquarters: Pearl, MS, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. American Federation of Government Employees

    EIN 586067066 · Headquarters: Collins, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. American Federation of Government Employees

    EIN 640941348 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. American Federation of Government Employees

    EIN 646028192 · Headquarters: Louin, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. American Federation of Government Employees

    EIN 646028194 · Headquarters: Morton, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. American Federation of Labor & Cio Central Mississippi Clu

    EIN 640621197 · Headquarters: JACKSON, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. American Federation of Labor and Congress of Industrial Organization

    EIN 640354605 · Headquarters: JACKSON, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. American Federation of Musicians of the Us & Canada

    EIN 470362298 · Headquarters: Gulfport, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. American Federation of Teachers

    EIN 043737853 · Headquarters: JACKSON, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. American Federation of Teachers

    EIN 510158072 · Headquarters: PASCAGOULA, MS, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  36. American Federation of Teachers

    EIN 640591900 · Headquarters: Gulfport, MS, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  37. American Federation of Teachers

    EIN 640752926 · Headquarters: Hattiesburg, MS, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  38. American Fence Association Inc

    EIN 631171676 · Headquarters: PEARL, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. American Fisheries Society

    EIN 237354565 · Headquarters: Cleveland, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. American Fisheries Society

    EIN 521069106 · Headquarters: Ocean Springs, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  41. American Guild of Organists

    EIN 273108749 · Headquarters: Oxford, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. American Guild of Organists Ago

    EIN 646026564 · Headquarters: Vicksburg, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. American Humanist Association

    EIN 392753624 · Headquarters: Pass Christian, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. American Humanist Association

    EIN 472622201 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  45. American Inns of Court Foundation

    EIN 521636992 · Headquarters: Oxford, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. American Inns of Court Foundation

    EIN 521644048 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. American Inns of Court Foundation

    EIN 640861707 · Headquarters: St Louis, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. American Institute of Aeronautics and Astronautics

    EIN 237099185 · Headquarters: Oxford, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. American Institute of Aeronautics and Astronautics

    EIN 646034437 · Headquarters: Mississippi State, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. American Institute of Aeronautics and Astronautics

    EIN 721184148 · Headquarters: Stennis Space Center, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. American Institute of Industrial Engineers Inc

    EIN 510153768 · Headquarters: Mississippi State, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  52. American Legion

    EIN 043805269 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  53. American Legion

    EIN 237017462 · Headquarters: columbus, MS, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  54. American Legion

    EIN 237379691 · Headquarters: Natchez, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. American Legion

    EIN 582294016 · Headquarters: Wesson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. American Legion

    EIN 640389211 · Headquarters: GREENVILLE, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. American Legion

    EIN 640522467 · Headquarters: Cleveland, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  58. American Legion

    EIN 640583918 · Headquarters: YAZOO CITY, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  59. American Legion

    EIN 640636714 · Headquarters: YAZOO CITY, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  60. American Legion

    EIN 640640009 · Headquarters: meridian, MS, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  61. American Legion

    EIN 640856809 · Headquarters: Long Beach, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. American Legion

    EIN 640923019 · Headquarters: CLEVELAND, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. American Legion

    EIN 646025140 · Headquarters: Bude, MS, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  64. American Legion

    EIN 646025538 · Headquarters: West Point, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. American Legion

    EIN 646027797 · Headquarters: WINONA, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. American Legion

    EIN 646028405 · Headquarters: Greenwood, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. American Legion

    EIN 646035621 · Headquarters: BATESVILLE, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. American Legion

    EIN 646035624 · Headquarters: Bay Springs, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. American Legion

    EIN 646035630 · Headquarters: Booneville, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. American Legion

    EIN 646035650 · Headquarters: Corinth, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. American Legion

    EIN 646035661 · Headquarters: Fulton, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. American Legion

    EIN 646035662 · Headquarters: GRENADA, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. American Legion

    EIN 646035676 · Headquarters: New Albany, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. American Legion

    EIN 646035736 · Headquarters: McComb, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. American Legion

    EIN 800262508 · Headquarters: RIPLEY, MS, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  76. American Legion

    EIN 821171121 · Headquarters: Sumrall, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. American Legion

    EIN 900416850 · Headquarters: Calhoun City, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. American Legion

    EIN 900588580 · Headquarters: Canton, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. American Legion

    EIN 900873191 · Headquarters: Ackerman, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. American Legion Allein Post #3 Inc

    EIN 646029002 · Headquarters: VICKSBURG, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. American Legion Auxiliary

    EIN 202162563 · Headquarters: NEW ALBANY, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. American Legion Auxiliary

    EIN 237047688 · Headquarters: Natchez, MS, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  83. American Legion Auxiliary

    EIN 260120097 · Headquarters: Waveland, MS, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  84. American Legion Auxiliary

    EIN 300539408 · Headquarters: CARTHAGE, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. American Legion Auxiliary

    EIN 352351421 · Headquarters: Meridian, MS, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  86. American Legion Auxiliary

    EIN 352355317 · Headquarters: Collins, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. American Legion Auxiliary

    EIN 371738192 · Headquarters: Bay Springs, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. American Legion Auxiliary

    EIN 464349121 · Headquarters: Nesbit, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. American Legion Auxiliary

    EIN 640653419 · Headquarters: GULFPORT, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. American Legion Auxiliary

    EIN 640679242 · Headquarters: Clarksdale, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. American Legion Auxiliary

    EIN 640679728 · Headquarters: Bay Saint Louis, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. American Legion Auxiliary

    EIN 640679744 · Headquarters: Tupelo, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. American Legion Auxiliary

    EIN 640682203 · Headquarters: CLEVELAND, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. American Legion Auxiliary

    EIN 640689570 · Headquarters: Vicksburg, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. American Legion Auxiliary

    EIN 640817083 · Headquarters: Gloster, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. American Legion Auxiliary

    EIN 640831853 · Headquarters: Gautier, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. American Legion Auxiliary

    EIN 646025023 · Headquarters: Pascagoula, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  98. American Legion Auxiliary

    EIN 646025539 · Headquarters: West Point, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. American Legion Auxiliary

    EIN 716061270 · Headquarters: Diamondhead, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. American Legion Auxiliary

    EIN 821559933 · Headquarters: Corinth, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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