Nonprofits in Massachusetts

Nonprofits in Massachusetts. Browse 52,168 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. Massachusetts Public Employees Health and Welfare Fund

    EIN 222618894 · Headquarters: PEABODY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Massachusetts Public Health Association

    EIN 042326503 · Headquarters: BOSTON, MA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Massachusetts Public Interest Research Group Education Fund Inc

    EIN 042670284 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Massachusetts Public Interest Research Group Inc

    EIN 042536325 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Massachusetts Purebred Dairy Cattle Association

    EIN 237441991 · Headquarters: South Deerfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Massachusetts Quarter Horse Association Corp

    EIN 010755334 · Headquarters: WINCHENDON, MA, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  7. Massachusetts Quilt Documentation Project

    EIN 061651685 · Headquarters: Lowell, MA, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  8. Massachusetts Radiological Society Inc

    EIN 237051966 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Massachusetts Railroad Association

    EIN 043505199 · Headquarters: Holland, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Massachusetts Raptor Center Inc

    EIN 472170373 · Headquarters: Taunton, MA, US · Animal Related · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  11. Massachusetts Real Estate Community Alliance Inc

    EIN 882858702 · Headquarters: FOXBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  12. Massachusetts Recreation and Park Associ

    EIN 042644992 · Headquarters: MARLBOROUGH, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Massachusetts Recreational Consumer Council

    EIN 820809380 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. Massachusetts Regional Employment Board Association

    EIN 043345830 · Headquarters: BOSTON, MA, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Massachusetts Registry of Interpreters for the Deaf

    EIN 042651860 · Headquarters: BURLINGTON, MA, USA · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  16. Massachusetts Rental Housing Association Inc

    EIN 222546900 · Headquarters: HAVERHILL, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  17. Massachusetts Rescue and Recovery K9 Unit Inc

    EIN 680647045 · Headquarters: Harvard, MA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. Massachusetts Restaurant Association Educational Foundation

    EIN 043478931 · Headquarters: Westborough, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Massachusetts Restaurants United Inc

    EIN 853306879 · Headquarters: NEWBURYPORT, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Massachusetts Rhode Island Ipa Inc

    EIN 043500329 · Headquarters: FALL RIVER, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Massachusetts Ride for the Ribbon Inc

    EIN 452400850 · Headquarters: GROVELAND, MA, USA · Medical Research · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  22. Massachusetts Rifle Association

    EIN 046059251 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Massachusetts Risk and Insurance Management Society Inc

    EIN 237236362 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Massachusetts Rivers Alliance Inc

    EIN 208387704 · Headquarters: Somerville, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Massachusetts Rural Schools Coalition Inc

    EIN 842674470 · Headquarters: Shelburne Falls, MA, USA · Education · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  26. Massachusetts Safety Officers League C/o Jennie Welch

    EIN 043284880 · Headquarters: BURLINGTON, MA, USA · Crime & Legal Related · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  27. Massachusetts School Administrators' Association Incorporated

    EIN 042642485 · Headquarters: FRANKLIN, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Massachusetts School Based Health Alliance

    EIN 824209668 · Headquarters: Beverly, MA, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  29. Massachusetts School Councelors Association Inc

    EIN 237149656 · Headquarters: Hampden, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Massachusetts School Nurse Organization

    EIN 042601335 · Headquarters: Hudson, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  31. Massachusetts School Nurse Research Network Incorporated

    EIN 462136476 · Headquarters: East Falmouth, MA, US · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Massachusetts School of Law at Andover Inc

    EIN 043009002 · Headquarters: Andover, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Massachusetts School Psychologists Association Inc

    EIN 050365213 · Headquarters: NEWTON, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. Massachusetts Science & Engineering Fair Inc

    EIN 042707499 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Massachusetts Science Educators Hall of Fame Inc

    EIN 043566344 · Headquarters: NEWTON, MA, US · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Massachusetts Science Olympiad

    EIN 043254356 · Headquarters: Reading, MA, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Massachusetts Secondary School Athletic Directors Assoc Inc

    EIN 043164324 · Headquarters: BEDFORD, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Massachusetts Selects Midget Hockey League Inc

    EIN 273853869 · Headquarters: DORCHESTER, MA, USA · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  39. Massachusetts Selects Youth Hockey League Inc

    EIN 273461648 · Headquarters: WELLESLEY HILLS, MA, USA · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  40. Massachusetts Senior Action Council Inc

    EIN 042760902 · Headquarters: QUINCY, MA, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Massachusetts Senior and Assisted Living Communities Foundation

    EIN 810809743 · Headquarters: WALTHAM, MA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  42. Massachusetts Senior Care Association Inc

    EIN 042372909 · Headquarters: EASTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Massachusetts Senior Care Foundation Inc

    EIN 222627130 · Headquarters: EASTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Massachusetts Senior Games Inc

    EIN 223137409 · Headquarters: NORTHBOROUGH, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. Massachusetts Service Alliance Inc

    EIN 043088234 · Headquarters: BOSTON, MA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Massachusetts Shellfish Officers Association Inc

    EIN 043476541 · Headquarters: SANDWICH, MA, USA · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  47. Massachusetts Sibling Support Netwo

    EIN 451138572 · Headquarters: DUXBURY, MA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Massachusetts Sicilia Mondo Inc

    EIN 342018705 · Headquarters: PEABODY, MA, US · Recreation & Sports · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  49. Massachusetts Sickle Cell Associationinc

    EIN 043524260 · Headquarters: BOSTON, MA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Massachusetts Sigma Chapter of Sigma Alpha Epsilon

    EIN 454085497 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  51. Massachusetts Sign Contractors Association

    EIN 042649329 · Headquarters: Auburn, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  52. Massachusetts Ski Areas Association Inc

    EIN 043302864 · Headquarters: LENOX, MA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. Massachusetts Sleep Society Incorporated

    EIN 263832105 · Headquarters: Boston, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Massachusetts Smoke Free Association Inc

    EIN 474475986 · Headquarters: Newton, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  55. Massachusetts Soccer Conference

    EIN 020669576 · Headquarters: FRANKLIN, MA, USA · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  56. Massachusetts Society for Aiding Discharged Prisoners

    EIN 042138900 · Headquarters: BEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  57. Massachusetts Society for Bioenergetic Analysis Inc

    EIN 042934058 · Headquarters: CAMBRIDGE, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Massachusetts Society for Heathcare Risk Management Inc

    EIN 042764297 · Headquarters: North Oxford, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. Massachusetts Society for Promoting Agriculture

    EIN 042265469 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. Massachusetts Society for the Prevention of Cruelty to Children

    EIN 042103596 · Headquarters: LEXINGTON, MA, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Massachusetts Society Health-system Pharmacists Foundation Inc

    EIN 208273831 · Headquarters: WESTFORD, MA, USA · Health Care · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  62. Massachusetts Society of Addiction Medicine Inc

    EIN 020556564 · Headquarters: WALTHAM, MA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Massachusetts Society of Anesthesiologists Inc

    EIN 046180165 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Massachusetts Society of Clinical Oncologists Inc

    EIN 042863899 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Massachusetts Society of Cpa's Inc

    EIN 042055313 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Massachusetts Society of Enrolled Agents

    EIN 222793542 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  67. Massachusetts Society of Genealogists Inc

    EIN 222564825 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Massachusetts Society of Genealogists Inc

    EIN 222564828 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Massachusetts Society of Genealogists Inc

    EIN 222564833 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Massachusetts Society of Genealogists Inc

    EIN 371603474 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Massachusetts Society of Genealogists Inc

    EIN 371604322 · Headquarters: Ashland, MA, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  72. Massachusetts Society of Health-system Pharmacists Inc

    EIN 042934946 · Headquarters: WESTFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Massachusetts Society of Mayflower Descendents

    EIN 042104712 · Headquarters: HINGHAM, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Massachusetts Society of Municipal Conservation Professionals

    EIN 223061734 · Headquarters: Newton, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Massachusetts Society of Naturopathic Doctors Inc

    EIN 454242483 · Headquarters: Orleans, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Massachusetts Society of Optometrists Inc

    EIN 042281590 · Headquarters: AUBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Massachusetts Society of Orthotics and Prosthetics Inc

    EIN 042760681 · Headquarters: SOUTH BOSTON, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Massachusetts Society of Pathologists Inc

    EIN 042577082 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  79. Massachusetts Society of Perfusion Inc

    EIN 043279999 · Headquarters: Medfield, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Massachusetts Society of Perianesthesia Nurses Inc

    EIN 222989024 · Headquarters: Acton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Massachusetts Society of Plastic Surgeons Inc

    EIN 043457885 · Headquarters: BEVERLY, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Massachusetts Society of Professional Engineers Inc

    EIN 046130264 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. Massachusetts Society of Radiologic Technologists Inc

    EIN 046190252 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Massachusetts Society of the Cincinnati

    EIN 046046761 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  85. Massachusetts Society of Thoracic Surgeons Inc

    EIN 043564202 · Headquarters: BEVERLY, MA, US · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Massachusetts Society of Traditional Chinese Med

    EIN 850533742 · Headquarters: Waltham, MA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  87. Massachusetts Society Sons of the American Revolution

    EIN 042104710 · Headquarters: DENNIS, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Massachusetts Socity of Genealogists Inc

    EIN 222564829 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Massachusetts Soldiers Legacy Fund

    EIN 201909556 · Headquarters: NORTHBOROUGH, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Massachusetts Special Care & Association

    EIN 830942782 · Headquarters: HOLLISTON, MA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Massachusetts Special Hockey

    EIN 203636950 · Headquarters: NORWELL, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Massachusetts Specialty Foods Assoc

    EIN 042998082 · Headquarters: Groton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Massachusetts Speech and Debate League Inc

    EIN 460683133 · Headquarters: Newton, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Massachusetts Sports Partnership Inc

    EIN 043167349 · Headquarters: WOBURN, MA, US · Recreation & Sports · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  95. Massachusetts Sportsmen's Junior Conservation Camp Inc

    EIN 042780715 · Headquarters: NORTHBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  96. Massachusetts Sportsmens Council Incorporated

    EIN 042925838 · Headquarters: Rockland, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Massachusetts Squash Racquets Association Inc

    EIN 222543941 · Headquarters: Billerica, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. Massachusetts St Lottery Comm-seiu Local 888 Health & Welfare Fund

    EIN 202815766 · Headquarters: BRAINTREE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  99. Massachusetts Staffing Association

    EIN 043050320 · Headquarters: ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Massachusetts State Assembly of Ast

    EIN 600001497 · Headquarters: Medford, MA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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