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. Optimist International

    EIN 630827219 · Headquarters: Athens, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Optimist International

    EIN 630837091 · Headquarters: Montgomery, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Optimist International

    EIN 630888810 · Headquarters: MUSCLE SHOALS, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Optimist International

    EIN 630909751 · Headquarters: Madison, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Optimist International

    EIN 630986597 · Headquarters: Fort Payne, AL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  6. Optimist International

    EIN 636022818 · Headquarters: Mobile, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Optimist International

    EIN 636049960 · Headquarters: Birmingham, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Optimist International

    EIN 636050870 · Headquarters: Birmingham, AL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  9. Optimist International

    EIN 636050962 · Headquarters: Huntsville, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Optimist International

    EIN 636056639 · Headquarters: Gurley, AL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  11. Optimist International

    EIN 636057033 · Headquarters: Birmingham, AL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  12. Optimist International

    EIN 636363636 · Headquarters: Richfield, MN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Optimist International

    EIN 640803376 · Headquarters: Merigold, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Optimist International

    EIN 646025437 · Headquarters: Meridian, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  15. Optimist International

    EIN 646025795 · Headquarters: Madison, MS, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  16. Optimist International

    EIN 650501609 · Headquarters: Goulds, FL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  17. Optimist International

    EIN 680289069 · Headquarters: Elk Grove, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Optimist International

    EIN 680331389 · Headquarters: San Andreas, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Optimist International

    EIN 680400307 · Headquarters: Oroville, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. Optimist International

    EIN 680482306 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  21. Optimist International

    EIN 710526023 · Headquarters: Rogers, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Optimist International

    EIN 710692598 · Headquarters: Greenbrier, AR, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  23. Optimist International

    EIN 710704986 · Headquarters: LITTLE ROCK, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Optimist International

    EIN 716054439 · Headquarters: Marion, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Optimist International

    EIN 716057191 · Headquarters: north little rock, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Optimist International

    EIN 716058976 · Headquarters: Hot Springs Village, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Optimist International

    EIN 716060752 · Headquarters: SEARCY, AR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Optimist International

    EIN 716065000 · Headquarters: Fort Smith, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Optimist International

    EIN 720630529 · Headquarters: Lake Charles, LA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  30. Optimist International

    EIN 721226950 · Headquarters: HORNBECK, LA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Optimist International

    EIN 721551150 · Headquarters: Montebello, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  32. Optimist International

    EIN 726031176 · Headquarters: Carencro, LA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Optimist International

    EIN 726031426 · Headquarters: Jennings, LA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Optimist International

    EIN 736097041 · Headquarters: Muskogee, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Optimist International

    EIN 736112899 · Headquarters: Bixby, OK, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  36. Optimist International

    EIN 736117516 · Headquarters: Bethany, OK, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  37. Optimist International

    EIN 740879460 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Optimist International

    EIN 741007757 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Optimist International

    EIN 741478516 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Optimist International

    EIN 741535670 · Headquarters: WILLIS, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Optimist International

    EIN 742289843 · Headquarters: Cody, WY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Optimist International

    EIN 742302745 · Headquarters: Fort Lupton, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  43. Optimist International

    EIN 746047100 · Headquarters: Bellaire, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  44. Optimist International

    EIN 746056508 · Headquarters: El Paso, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Optimist International

    EIN 746062058 · Headquarters: waco, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  46. Optimist International

    EIN 746062399 · Headquarters: Port Neches, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Optimist International

    EIN 746062459 · Headquarters: Canutillo, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Optimist International

    EIN 746062460 · Headquarters: EL PASO, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  49. Optimist International

    EIN 746062603 · Headquarters: GLEN ROSE, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Optimist International

    EIN 746063554 · Headquarters: Galveston, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Optimist International

    EIN 746064183 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Optimist International

    EIN 746067276 · Headquarters: EL PASO, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Optimist International

    EIN 746072868 · Headquarters: Galveston, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Optimist International

    EIN 746073956 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Optimist International

    EIN 746073976 · Headquarters: El Paso, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Optimist International

    EIN 746077231 · Headquarters: AUSTIN, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  57. Optimist International

    EIN 746077976 · Headquarters: NEW BRAUNFELS, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Optimist International

    EIN 746079609 · Headquarters: Manchaca, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Optimist International

    EIN 750783590 · Headquarters: Denton, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Optimist International

    EIN 751093144 · Headquarters: FORT WORTH, TX, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  61. Optimist International

    EIN 751181876 · Headquarters: Marshall, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  62. Optimist International

    EIN 751705306 · Headquarters: AMARILLO, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  63. Optimist International

    EIN 752537503 · Headquarters: Anthony, NM, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  64. Optimist International

    EIN 756036378 · Headquarters: Garland, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  65. Optimist International

    EIN 756037140 · Headquarters: Mount Pleasant, TX, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  66. Optimist International

    EIN 756044531 · Headquarters: Grand Prairie, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Optimist International

    EIN 756048640 · Headquarters: FORT WORTH, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Optimist International

    EIN 756048663 · Headquarters: ODESSA, TX, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  69. Optimist International

    EIN 760356888 · Headquarters: Huntsville, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  70. Optimist International

    EIN 766027380 · Headquarters: Benton, LA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  71. Optimist International

    EIN 770292016 · Headquarters: PASO ROBLES, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Optimist International

    EIN 770308238 · Headquarters: REDWOOD CITY, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  73. Optimist International

    EIN 800343002 · Headquarters: Baraboo, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Optimist International

    EIN 810380040 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Optimist International

    EIN 810447277 · Headquarters: Billings, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Optimist International

    EIN 811177616 · Headquarters: SAN DIEGO, CA, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  77. Optimist International

    EIN 811514513 · Headquarters: Detroit, MI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Optimist International

    EIN 811600502 · Headquarters: Charlotte, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Optimist International

    EIN 811775477 · Headquarters: Florissant, MO, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  80. Optimist International

    EIN 811806667 · Headquarters: ELM CITY, NC, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  81. Optimist International

    EIN 812299650 · Headquarters: Aurora, CO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  82. Optimist International

    EIN 812574907 · Headquarters: Sumter, SC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Optimist International

    EIN 812673811 · Headquarters: Devils Lake, ND, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  84. Optimist International

    EIN 812686793 · Headquarters: Fircrest, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Optimist International

    EIN 812963736 · Headquarters: Bettendorf, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Optimist International

    EIN 812977921 · Headquarters: Pea Ridge, AR, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  87. Optimist International

    EIN 813275703 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Optimist International

    EIN 813336576 · Headquarters: VERMILLION, SD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  89. Optimist International

    EIN 813632722 · Headquarters: Southfield, MI, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  90. Optimist International

    EIN 814058034 · Headquarters: Whiteville, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Optimist International

    EIN 814094923 · Headquarters: Oneill, NE, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  92. Optimist International

    EIN 814119084 · Headquarters: Ozark, MO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  93. Optimist International

    EIN 814162608 · Headquarters: CLINTON TWP, MI, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  94. Optimist International

    EIN 814245483 · Headquarters: Omaha, NE, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Optimist International

    EIN 814359494 · Headquarters: myrtle beach, SC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Optimist International

    EIN 814567470 · Headquarters: San Luis, AZ, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  97. Optimist International

    EIN 814999590 · Headquarters: Roseville, MN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Optimist International

    EIN 815208675 · Headquarters: Lakeville, MN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  99. Optimist International

    EIN 816006617 · Headquarters: Great Falls, MT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  100. Optimist International

    EIN 816012096 · Headquarters: Havre, MT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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