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. Society of Pi Kappa Lambda

    EIN 237150158 · Headquarters: Wooster, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Society of Pi Kappa Lambda

    EIN 237335283 · Headquarters: Greeley, CO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  3. Society of Pi Kappa Lambda

    EIN 351411888 · Headquarters: Indianapolis, IN, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  4. Society of Pi Kappa Lambda

    EIN 363618230 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  5. Society of Pi Kappa Lambda

    EIN 363633141 · Headquarters: Kalamazoo, MI, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  6. Society of Pi Kappa Lambda

    EIN 363730615 · Headquarters: Valparaiso, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Society of Pi Kappa Lambda

    EIN 364004635 · Headquarters: Newark, DE, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  8. Society of Pi Kappa Lambda

    EIN 396132079 · Headquarters: Appleton, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Society of Pi Kappa Lambda

    EIN 431500003 · Headquarters: Bolivar, MO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  10. Society of Pi Kappa Lambda

    EIN 510192948 · Headquarters: Edwardsville, IL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  11. Society of Pi Kappa Lambda

    EIN 581757176 · Headquarters: Springfield, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Society of Pi Kappa Lambda

    EIN 621182521 · Headquarters: Nashville, TN, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  13. Society of Pi Kappa Lambda

    EIN 636050975 · Headquarters: ST SIMONS ISLAND, GA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. Society of Pi Kappa Lambda

    EIN 900254400 · Headquarters: Statesboro, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Society of Pi Kappa Lambda

    EIN 911884784 · Headquarters: Lubbock, TX, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  16. Society of Pi Kappa Lambda

    EIN 911884785 · Headquarters: Rochester, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Society of Pi Kappa Lambda Beta Zeta Chapter School of Music

    EIN 566093334 · Headquarters: Greenville, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Society of Pi Kappa Lambda Phi Chapter

    EIN 596200245 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Society of Pi Kappa Lambda-zeta Mu

    EIN 363616293 · Headquarters: Potsdam, NY, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  20. Society of Pi Kappa Lamda Epsilon Music Dept Evangel University

    EIN 581757361 · Headquarters: SPRINGFIELD, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Society of Pioneers of Montgomery Inc

    EIN 800754493 · Headquarters: Montgomery, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Society of Plactic Engineers

    EIN 823181937 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Society of Plastic Surgical Skin Care Specialists

    EIN 752581991 · Headquarters: GARDEN GROVE, CA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  24. Society of Plastics Engineers

    EIN 010812504 · Headquarters: Rochester, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Society of Plastics Engineers

    EIN 046130445 · Headquarters: Tyngsboro, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Society of Plastics Engineers

    EIN 066068798 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  27. Society of Plastics Engineers

    EIN 133186178 · Headquarters: BETHEL, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Society of Plastics Engineers

    EIN 161433294 · Headquarters: Wadsworth, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Society of Plastics Engineers

    EIN 223049887 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  30. Society of Plastics Engineers

    EIN 237209220 · Headquarters: NEWARK, DE, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Society of Plastics Engineers

    EIN 237241745 · Headquarters: Bethel, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Society of Plastics Engineers

    EIN 237270909 · Headquarters: Liberty Township, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Society of Plastics Engineers

    EIN 316050249 · Headquarters: DANBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  34. Society of Plastics Engineers

    EIN 341290949 · Headquarters: ROCHESTER, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Society of Plastics Engineers

    EIN 346532147 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Society of Plastics Engineers

    EIN 346542520 · Headquarters: Strongsville, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. Society of Plastics Engineers

    EIN 352079133 · Headquarters: Hudson, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Society of Plastics Engineers

    EIN 356072525 · Headquarters: CARMEL, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Society of Plastics Engineers

    EIN 366116665 · Headquarters: PALATINE, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Society of Plastics Engineers

    EIN 370265597 · Headquarters: TROY, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Society of Plastics Engineers

    EIN 416039530 · Headquarters: Saint Paul, MN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Society of Plastics Engineers

    EIN 510195173 · Headquarters: TRUMBULL, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  43. Society of Plastics Engineers

    EIN 566062804 · Headquarters: Matthews, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Society of Plastics Engineers

    EIN 581917186 · Headquarters: Englewood, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Society of Plastics Engineers

    EIN 621431770 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  46. Society of Plastics Engineers

    EIN 621500898 · Headquarters: DANBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  47. Society of Plastics Engineers

    EIN 736104167 · Headquarters: Bartlesvillle, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Society of Plastics Engineers

    EIN 742686513 · Headquarters: DANBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  49. Society of Plastics Engineers

    EIN 916056467 · Headquarters: Maple Valley, WA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  50. Society of Plastics Engineers

    EIN 936042674 · Headquarters: Portland, OR, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  51. Society of Plastics Engineers

    EIN 946104156 · Headquarters: Newark, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  52. Society of Plastics Engineers 09 Milwaukee Section

    EIN 396078406 · Headquarters: BROOKFIELD, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  53. Society of Plastics Engineers 15 Western New England Section

    EIN 510195187 · Headquarters: Vernon, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Society of Plastics Engineers 22 Extrusion Division

    EIN 237283050 · Headquarters: ROCHESTER, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Society of Plastics Engineers Blow Moulding Division

    EIN 237283048 · Headquarters: FITCHBURG, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. Society of Plastics Engineers Inc

    EIN 371779002 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Society of Plastics Engineers Inc Automotive Division

    EIN 237163348 · Headquarters: Troy, MI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. Society of Plastics Engineers Thermoforming Division

    EIN 237283052 · Headquarters: LAKE FOREST, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Society of Police Futurists International

    EIN 521771962 · Headquarters: Woodbury, MN, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  60. Society of Port Engineers La

    EIN 953543431 · Headquarters: WILMINGTON, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  61. Society of Printers

    EIN 237059837 · Headquarters: Dedham, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Society of Professional Assessors Inc

    EIN 222849328 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Society of Professional Benefit Administrators

    EIN 521156864 · Headquarters: CHEVY CHASE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Society of Professional Engineers District of Columbia

    EIN 526046209 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Society of Professional Investigators Inc

    EIN 136162688 · Headquarters: New York, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  66. Society of Professional Jornalists

    EIN 237145734 · Headquarters: Phoenix, AZ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Society of Professional Journalists

    EIN 010608788 · Headquarters: Fayetteville, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Society of Professional Journalists

    EIN 202766839 · Headquarters: Salem, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Society of Professional Journalists

    EIN 232843809 · Headquarters: Hazleton, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Society of Professional Journalists

    EIN 237033901 · Headquarters: Dublin, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Society of Professional Journalists

    EIN 237038385 · Headquarters: Fairfax, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Society of Professional Journalists

    EIN 237041104 · Headquarters: Dyer, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Society of Professional Journalists

    EIN 237078368 · Headquarters: Knoxville, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Society of Professional Journalists

    EIN 237308140 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Society of Professional Journalists

    EIN 237388221 · Headquarters: Mineral, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Society of Professional Journalists

    EIN 263450624 · Headquarters: Ithaca, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Society of Professional Journalists

    EIN 271400727 · Headquarters: Albuquerque, NM, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Society of Professional Journalists

    EIN 310911785 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Society of Professional Journalists

    EIN 311468429 · Headquarters: Colllege PArk, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Society of Professional Journalists

    EIN 311468471 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  81. Society of Professional Journalists

    EIN 311468476 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  82. Society of Professional Journalists

    EIN 346557724 · Headquarters: Fairview Park, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Society of Professional Journalists

    EIN 362037874 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Society of Professional Journalists

    EIN 362925190 · Headquarters: Independence, MO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  85. Society of Professional Journalists

    EIN 386093602 · Headquarters: East Lansing, MI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  86. Society of Professional Journalists

    EIN 431598416 · Headquarters: Joplin, MO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  87. Society of Professional Journalists

    EIN 453543652 · Headquarters: FORT WORTH, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Society of Professional Journalists

    EIN 464866880 · Headquarters: Atlanta, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Society of Professional Journalists

    EIN 486134875 · Headquarters: Wichita, KS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Society of Professional Journalists

    EIN 510242622 · Headquarters: San Marcos, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Society of Professional Journalists

    EIN 596153335 · Headquarters: Meridianville, AL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. Society of Professional Journalists

    EIN 616034223 · Headquarters: Louisville, KY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Society of Professional Journalists

    EIN 626050882 · Headquarters: Nashville, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Society of Professional Journalists

    EIN 800154441 · Headquarters: Fairview Park, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Society of Professional Journalists

    EIN 846035830 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Society of Professional Journalists

    EIN 870562436 · Headquarters: Ogden, UT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Society of Professional Journalists

    EIN 876123871 · Headquarters: Salt Lake City, UT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Society of Professional Journalists

    EIN 916055570 · Headquarters: Seattle, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Society of Professional Journalists

    EIN 946104982 · Headquarters: San Francisco, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Society of Professional Journalists

    EIN 956054728 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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