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. National Rural Letter Carriers Association

    EIN 821513697 · Headquarters: DILLON, SC, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  2. National Rural Letter Carriers Association

    EIN 821514149 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. National Rural Letter Carriers Association

    EIN 821514362 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. National Rural Letter Carriers Association

    EIN 821514852 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. National Rural Letter Carriers Association

    EIN 821515233 · Headquarters: manning, SC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  6. National Rural Letter Carriers Association

    EIN 821515451 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. National Rural Letter Carriers Association

    EIN 821515729 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. National Rural Letter Carriers Association

    EIN 821515926 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. National Rural Letter Carriers Association

    EIN 824303364 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. National Rural Letter Carriers Association

    EIN 824303672 · Headquarters: greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. National Rural Letter Carriers Association

    EIN 824304498 · Headquarters: WALTERBORO, SC, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  12. National Rural Letter Carriers Association

    EIN 830337124 · Headquarters: LEWISVILLE, ID, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. National Rural Letter Carriers Association

    EIN 830448428 · Headquarters: ALICE, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. National Rural Letter Carriers Association

    EIN 911360195 · Headquarters: Colville, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. National Rural Letter Carriers Association

    EIN 911577880 · Headquarters: Colville, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. National Rural Letter Carriers Association

    EIN 911829554 · Headquarters: Knoxville, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. National Rural Letter Carriers Association

    EIN 912080163 · Headquarters: Colville, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. National Rural Letter Carriers Association

    EIN 912095626 · Headquarters: Colville, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. National Rural Letter Carriers Association

    EIN 943434149 · Headquarters: MECHANICSBURG, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. National Rural Letter Carriers Association Georgia

    EIN 990845191 · Headquarters: Ballground, GA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  21. National Rural Letter Carriers Associtaion

    EIN 030402503 · Headquarters: Rio, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  22. National Rural Letter Carriers Ky

    EIN 237234635 · Headquarters: BURLINGTON, KY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. National Rural Letter Carriers North Carolina Rural Letter Carrier

    EIN 237235536 · Headquarters: SPRING LAKE, NC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. National Rural Letter Carriers Penna Rural Letter Carriers Association

    EIN 231915359 · Headquarters: FAIRVIEW, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. National Rural Letter Carriers Rlca

    EIN 237223281 · Headquarters: RED OAK, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. National Rural Letter Carriers' Association

    EIN 237235405 · Headquarters: Guilford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. National Rural Letter Carriers' Association

    EIN 237235449 · Headquarters: GALENA, IL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  28. National Rural Letter Carriers' Association

    EIN 530116149 · Headquarters: Alexandria, Virginia, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. National Rural Letter Carriers' Association

    EIN 911340834 · Headquarters: Colville, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. National Rural Utilities Cooperative Finance Corporation

    EIN 520891669 · Headquarters: DULLES, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. National Rural Water Association

    EIN 731006395 · Headquarters: Duncan, OK, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. National Safe Boating Council Inc

    EIN 237424720 · Headquarters: CLEARWATER, FL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  33. National Safe Rides

    EIN 263709695 · Headquarters: Bay Shore, NY, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  34. National Safety Management Society

    EIN 237108276 · Headquarters: Walnut Creek, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. National Sales & Marketing Executives Inc

    EIN 352539109 · Headquarters: CANTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. National Sales Network

    EIN 900718645 · Headquarters: HOUSTON, TX, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  37. National Sales Network Aaasp Austin Chapter

    EIN 263025324 · Headquarters: Round Rock, TX, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  38. National Sales Network Charlotte Chapter Inc

    EIN 854350688 · Headquarters: CHARLOTTE, NC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  39. National Sales Network Los Angeles California Chapter

    EIN 921530193 · Headquarters: LOS ANGELES, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  40. National Sales Network Nashville Chapter Aaasp

    EIN 264406293 · Headquarters: Nashville, TN, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  41. National Sales Network Nsn Detroit

    EIN 392323660 · Headquarters: Farmington Hills, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. National Sales Network Orlando Chap

    EIN 264554489 · Headquarters: WINTER GARDEN, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. National Sales Network Raleigh Chapter Inc

    EIN 853989726 · Headquarters: Raleigh, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. National Sane-freeze Education Fund

    EIN 521120499 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. National Scciety Daughters of the Union 1861-1865

    EIN 881716322 · Headquarters: Wheatland, WY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. National Scholastic Surfing Association

    EIN 953298254 · Headquarters: Huntington Beach, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. National School Boards Action Center

    EIN 454913266 · Headquarters: ALEXANDRIA, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. National School Boards Leadership Council

    EIN 874543357 · Headquarters: CLARKSVILLE, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. National School Boards Leadership Council Ed

    EIN 882120816 · Headquarters: CLARKSVILLE, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. National School Chaplain Assoc Inc

    EIN 760324439 · Headquarters: NORMAN, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  51. National School Development Council Inc

    EIN 237273907 · Headquarters: Marlborough, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. National School Plant Mgt Association Inc

    EIN 571045118 · Headquarters: Laurel Springs, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. National School Public Relations Association

    EIN 050605916 · Headquarters: Owensboro, KY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. National School Public Relations Association

    EIN 421364521 · Headquarters: Dubuque, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. National School Public Relations Association

    EIN 521974172 · Headquarters: Parsippany, NJ, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  56. National School Public Relations Association

    EIN 522050152 · Headquarters: Franklin, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. National School Public Relations Association

    EIN 541794517 · Headquarters: Arlington, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. National School Public Relations Association

    EIN 541794518 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  59. National School Public Relations Association

    EIN 541794524 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  60. National School Public Relations Association

    EIN 541814960 · Headquarters: Lansing, KS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. National School Public Relations Association

    EIN 541814964 · Headquarters: Covington, GA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  62. National School Public Relations Association

    EIN 541823755 · Headquarters: Pelham, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. National School Public Relations Association

    EIN 570791563 · Headquarters: Sumter, SC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. National School Public Relations Association

    EIN 731030723 · Headquarters: Lawton, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. National School Public Relations Association

    EIN 860666423 · Headquarters: Phoenix, AZ, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  66. National School Public Relations Association

    EIN 911305044 · Headquarters: SEATTLE, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  67. National School Public Relations Association

    EIN 911904080 · Headquarters: Derwood, MD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  68. National School Public Relations Association

    EIN 930983235 · Headquarters: Beaverton, OR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. National School Public Relations Association

    EIN 942990118 · Headquarters: Downey, CA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  70. National School Public Relations Association-NC School Public Relations Ass

    EIN 581662643 · Headquarters: Davidson, NC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  71. National School Transportation Association Inc

    EIN 237069050 · Headquarters: HAMILTON, NJ, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  72. National Science and Technology Medals Foundation Inc

    EIN 521703587 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. National Science Education Leadership Association

    EIN 751641166 · Headquarters: KING OF PRUSSIA, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. National Sciety of the Sons of the American Revolution

    EIN 880770778 · Headquarters: WEST CHESTER, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. National Sciety Sons and Daughters

    EIN 883238879 · Headquarters: Mt Pleasant, SC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. National Scoliosis Foundation Inc

    EIN 042622698 · Headquarters: Stoughton, MA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  77. National Scooter Association

    EIN 464549359 · Headquarters: La Jolla, CA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  78. National Sculpture Society Tr Xxxxx1008

    EIN 136702761 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  79. National Sculpture Society Tr#2 Xxxxx2003

    EIN 136755561 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  80. National Security Action

    EIN 822007387 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. National Security and Opportunity Fund

    EIN 821685518 · Headquarters: East Lansing, MI, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  82. National Security Lawyers Association Inc

    EIN 873499961 · Headquarters: Albany, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. National Self-esteem Resources & Development Center

    EIN 680138133 · Headquarters: SAN RAFAEL, CA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  84. National Senior Communities Inc

    EIN 204356247 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. National Senior Games Association Inc

    EIN 431488742 · Headquarters: CLEARWATER, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. National Senior Pro Rodeo Association

    EIN 810403783 · Headquarters: WICKENBURG, AZ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. National Senior Softball Hall of Fame Inc

    EIN 262978420 · Headquarters: MUSTANG, OK, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  88. National Shared Housing Resource Center Inc

    EIN 030336024 · Headquarters: South Burlington, VT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. National Sheep Improvement Program

    EIN 742477116 · Headquarters: ENGLEWOOD, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. National Shelley China Club

    EIN 650723172 · Headquarters: Anchorage, AK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. National Sheriffs' Association

    EIN 530116293 · Headquarters: ALEXANDRIA, VA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  92. National Sheriffs' Educational Foundation

    EIN 521100429 · Headquarters: ALEXANDRIA, VA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  93. National Shoe Retailers Assoication

    EIN 131087480 · Headquarters: TUCSON, AZ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. National Shoot-to Retrieve Field Trial Association Inc

    EIN 351480301 · Headquarters: DANVILLE, IN, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  95. National Shooting Sports Foundation (NSSF)

    EIN 060860132 · Headquarters: SHELTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. National Show Horse Registry Inc

    EIN 611011886 · Headquarters: DAYTON, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. National Sikh Ctr Charitable Trust

    EIN 526410942 · Headquarters: GERMANTOWN, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  98. National Silver Rabbit Club

    EIN 874486823 · Headquarters: port jervis, NY, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  99. National Skate Patrol Inc

    EIN 270391778 · Headquarters: Miami Beach, FL, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  100. National Ski & Snowboard Retailers Association

    EIN 363564318 · Headquarters: DOWNERS GROVE, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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