Unknown & Unclassified nonprofits in Massachusetts

Unknown & Unclassified nonprofits in Massachusetts. Browse 12,299 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. Alumnae Association of Mount Holyoke College Inc

    EIN 042675718 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Alumnae Association of Mount Holyoke College Inc

    EIN 042683153 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Alumnae Association of Mount Holyoke College Inc

    EIN 042705386 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Alumnae Association of Mount Holyoke College Inc

    EIN 042707837 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Alumnae Association of Mount Holyoke College Inc

    EIN 042711694 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Alumnae Association of Mount Holyoke College Inc

    EIN 042714212 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Alumnae Association of Mount Holyoke College Inc

    EIN 042717679 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Alumnae Association of Mount Holyoke College Inc

    EIN 042738887 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Alumnae Association of Mount Holyoke College Inc

    EIN 042767431 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Alumnae Association of Mount Holyoke College Inc

    EIN 042784585 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Alumnae Association of Mount Holyoke College Inc

    EIN 042791333 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Alumnae Association of Mount Holyoke College Inc

    EIN 042819058 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Alumnae Association of Mount Holyoke College Inc

    EIN 042964026 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Alumnae Association of Mount Holyoke College Inc

    EIN 043015140 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  15. Alumnae Association of Mount Holyoke College Inc

    EIN 043082050 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Alumnae Association of Mount Holyoke College Inc

    EIN 043096386 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Alumnae Association of Mount Holyoke College Inc

    EIN 043194360 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Alumnae Association of Mount Holyoke College Inc

    EIN 043225619 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Alumnae Association of Mount Holyoke College Inc

    EIN 043226700 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Alumnae Association of Mount Holyoke College Inc

    EIN 043366190 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Alumnae Association of Mount Holyoke College Inc

    EIN 046066358 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  22. Alumnae Association of Mount Holyoke College Inc

    EIN 046133809 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Alumnae Association of Mount Holyoke College Inc

    EIN 050378571 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Alumnae Association of Mount Holyoke College Inc

    EIN 050452946 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Alumnae Association of Mount Holyoke College Inc

    EIN 060956271 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Alumnae Association of Mount Holyoke College Inc

    EIN 061007608 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Alumnae Association of Mount Holyoke College Inc

    EIN 061026120 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Alumnae Association of Mount Holyoke College Inc

    EIN 061027091 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Alumnae Association of Mount Holyoke College Inc

    EIN 061098984 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  30. Alumnae Association of Mount Holyoke College Inc

    EIN 112432759 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Alumnae Association of Mount Holyoke College Inc

    EIN 112649351 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Alumnae Association of Mount Holyoke College Inc

    EIN 131514976 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Alumnae Association of Mount Holyoke College Inc

    EIN 141599487 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Alumnae Association of Mount Holyoke College Inc

    EIN 161082191 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Alumnae Association of Mount Holyoke College Inc

    EIN 201261647 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Alumnae Association of Mount Holyoke College Inc

    EIN 208980613 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Alumnae Association of Mount Holyoke College Inc

    EIN 222169466 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  38. Alumnae Association of Mount Holyoke College Inc

    EIN 222196613 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  39. Alumnae Association of Mount Holyoke College Inc

    EIN 222333758 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Alumnae Association of Mount Holyoke College Inc

    EIN 222381261 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Alumnae Association of Mount Holyoke College Inc

    EIN 222462993 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Alumnae Association of Mount Holyoke College Inc

    EIN 222542276 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Alumnae Association of Mount Holyoke College Inc

    EIN 223163349 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Alumnae Association of Mount Holyoke College Inc

    EIN 232024423 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  45. Alumnae Association of Mount Holyoke College Inc

    EIN 232263343 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Alumnae Association of Mount Holyoke College Inc

    EIN 232607191 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Alumnae Association of Mount Holyoke College Inc

    EIN 236289337 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Alumnae Association of Mount Holyoke College Inc

    EIN 237085588 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  49. Alumnae Association of Mount Holyoke College Inc

    EIN 237335912 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Alumnae Association of Mount Holyoke College Inc

    EIN 237353086 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Alumnae Association of Mount Holyoke College Inc

    EIN 237376069 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Alumnae Association of Mount Holyoke College Inc

    EIN 251351918 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Alumnae Association of Mount Holyoke College Inc

    EIN 261145316 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Alumnae Association of Mount Holyoke College Inc

    EIN 262267147 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Alumnae Association of Mount Holyoke College Inc

    EIN 310988722 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Alumnae Association of Mount Holyoke College Inc

    EIN 316036388 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Alumnae Association of Mount Holyoke College Inc

    EIN 362931029 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Alumnae Association of Mount Holyoke College Inc

    EIN 363219943 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Alumnae Association of Mount Holyoke College Inc

    EIN 364958711 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  60. Alumnae Association of Mount Holyoke College Inc

    EIN 382171061 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  61. Alumnae Association of Mount Holyoke College Inc

    EIN 382211169 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Alumnae Association of Mount Holyoke College Inc

    EIN 391897280 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Alumnae Association of Mount Holyoke College Inc

    EIN 431497827 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Alumnae Association of Mount Holyoke College Inc

    EIN 461828384 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Alumnae Association of Mount Holyoke College Inc

    EIN 465650752 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Alumnae Association of Mount Holyoke College Inc

    EIN 522043757 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  67. Alumnae Association of Mount Holyoke College Inc

    EIN 542138153 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Alumnae Association of Mount Holyoke College Inc

    EIN 550795814 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Alumnae Association of Mount Holyoke College Inc

    EIN 561156105 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Alumnae Association of Mount Holyoke College Inc

    EIN 721164995 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Alumnae Association of Mount Holyoke College Inc

    EIN 742162761 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Alumnae Association of Mount Holyoke College Inc

    EIN 751563955 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Alumnae Association of Mount Holyoke College Inc

    EIN 800758544 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Alumnae Association of Mount Holyoke College Inc

    EIN 815309986 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Alumnae Association of Mount Holyoke College Inc

    EIN 822936738 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Alumnae Association of Mount Holyoke College Inc

    EIN 830686704 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Alumnae Association of Mount Holyoke College Inc

    EIN 831409875 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Alumnae Association of Mount Holyoke College Inc

    EIN 834151327 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  79. Alumnae Association of Mount Holyoke College Inc

    EIN 834422402 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Alumnae Association of Mount Holyoke College Inc

    EIN 834437376 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Alumnae Association of Mount Holyoke College Inc

    EIN 840736927 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Alumnae Association of Mount Holyoke College Inc

    EIN 860617623 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  83. Alumnae Association of Mount Holyoke College Inc

    EIN 900018088 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Alumnae Association of Mount Holyoke College Inc

    EIN 900018090 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Alumnae Association of Mount Holyoke College Inc

    EIN 900018092 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Alumnae Association of Mount Holyoke College Inc

    EIN 900026660 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. Alumnae Association of Mount Holyoke College Inc

    EIN 900026672 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Alumnae Association of Mount Holyoke College Inc

    EIN 900026673 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Alumnae Association of Mount Holyoke College Inc

    EIN 900026678 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Alumnae Association of Mount Holyoke College Inc

    EIN 911825147 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Alumnae Association of Mount Holyoke College Inc

    EIN 912084369 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Alumnae Association of Mount Holyoke College Inc

    EIN 942103578 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Alumnae Association of Mount Holyoke College Inc

    EIN 942434609 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Alumnae Association of Mount Holyoke College Inc

    EIN 942498376 · Headquarters: South Hadley, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Alumnae Association of the School of Nursing of Ne Deaconess Hospital Inc

    EIN 046059993 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. Alumni Assoc of Alpha Mu Chapter of Phi Kappa Sigma Fraternity Inc

    EIN 043146095 · Headquarters: Wellesley, MA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  97. Alumni Association of Massasoit Community College Inc

    EIN 042771066 · Headquarters: BROCKTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  98. Alumni Association of Tep Inc

    EIN 161686778 · Headquarters: FRAMINGHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Alumni Association of the Lahey Clinic Foundation Inc

    EIN 042573620 · Headquarters: CHARLESTOWN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Alumni Association of the Universit of Massachusetts at Boston Inc

    EIN 043037799 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

First page and all pages