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. Sigma Phi Epsilon Fraternity Inc

    EIN 386143409 · Headquarters: Medford, MA, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  2. Sigma Phi Epsilon Fraternity Inc

    EIN 453178149 · Headquarters: Somerville, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Sigma Phi Epsilon Fraternity Inc Massachusetts Delta Chapter

    EIN 042123081 · Headquarters: BOSTON, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Sigma Phi Epsilon Greater New England Educational Foundation Inc

    EIN 834101158 · Headquarters: Somerville, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Sigma Phi Epsilon Massachusetts Zeta Tufts University Alumni and V

    EIN 465619105 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  6. Sigma Phi Epsilon University of Massachusetts Alumni Corpora

    EIN 460900860 · Headquarters: ACTON, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Sigma Phi Gamma International Sorority

    EIN 046145994 · Headquarters: Plainville, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  8. Sigma Phi Gamma International Sorority Inc

    EIN 042582260 · Headquarters: Mansfield, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  9. Sigma Phi Gamma International Sorority Inc

    EIN 043221041 · Headquarters: Marblehead, MA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  10. Sigma Phi Gamma International Sorority Inc

    EIN 046111808 · Headquarters: Rehobeth, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  11. Sigma Phi Gamma International Sorority Inc

    EIN 237168326 · Headquarters: Wrentham, MA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  12. Sigma Phi Omicron Alumni Association Incorporated

    EIN 204401291 · Headquarters: Lowell, MA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  13. Sigma Pi Fraternity International Gamma-iota Chapter

    EIN 042393466 · Headquarters: WORCESTER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Sigma Pi Fraternity International Inc

    EIN 061321740 · Headquarters: Bridgewater, MA, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  15. Sigma Pi Iota Theta Alumni Association

    EIN 861255117 · Headquarters: Holliston, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Sigma Pi Theta Sorority

    EIN 933112834 · Headquarters: BOSTON, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Sigma Sigma Sigma Inc

    EIN 453804043 · Headquarters: Worcester, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  18. Sigma Sigma Sigma Inc

    EIN 832062532 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Sigma Tau Gamma Delta Phi Alumni Association Incorporated

    EIN 462699182 · Headquarters: Buzzards Bay, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  20. Sigma Theta Tau Inc

    EIN 042609600 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Sigma Theta Tau Inc

    EIN 237111294 · Headquarters: Chestnut Hill, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Sigma Theta Tau Inc

    EIN 311242956 · Headquarters: Auburn, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sigma Theta Tau Inc

    EIN 363314845 · Headquarters: Salem, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Sigma Theta Tau Inc

    EIN 363314851 · Headquarters: Lowell, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Sigma Theta Tau Inc

    EIN 363479066 · Headquarters: Dartmouth, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  26. Sigma Theta Tau Inc

    EIN 621092061 · Headquarters: Stow, MA, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  27. Sigma Theta Tau International Inc

    EIN 046112795 · Headquarters: Milton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Sigma Theta Tau International Inc

    EIN 237243783 · Headquarters: Amherst, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Sigma Theta Tau International Inc

    EIN 471420409 · Headquarters: Worcester, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Sigma Theta Tau International Inc

    EIN 900012742 · Headquarters: Framingham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Sigma Theta Tau International Inc

    EIN 900357492 · Headquarters: Boston, MA, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  32. Sigma Theta Tau International Inc

    EIN 901029450 · Headquarters: Beverly, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Sigma Theta Tau International Inc

    EIN 911935299 · Headquarters: Weston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Sigma Xi - North Shore Chapter

    EIN 271058031 · Headquarters: BEVERLY, MA, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  35. Sign Posts Inc

    EIN 475015933 · Headquarters: IPSWICH, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  36. Signature Healthcare

    EIN 222472997 · Headquarters: Brockton, MA, US · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  37. Signature Healthcare Corporation

    EIN 042103554 · Headquarters: Brockton, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  38. Signature Healthcare Medical Group Inc

    EIN 043306782 · Headquarters: Brockton, MA, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  39. Signature Healthcare Urgent Care Inc

    EIN 991362817 · Headquarters: Brockton, MA, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  40. Signet Associates

    EIN 046040508 · Headquarters: CAMBRIDGE, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Signet Society

    EIN 041833930 · Headquarters: CAMBRIDGE, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Signore Family Charitable Trust

    EIN 453628689 · Headquarters: NEWBURY, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  43. Signs and Wonders Liberty Ministries

    EIN 300400578 · Headquarters: WALTHAM, MA, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Sikh Dharma Social Services Inc

    EIN 237281444 · Headquarters: MILLIS, MA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Sikh Sangat Society Boston Inc

    EIN 203943428 · Headquarters: Everett, MA, USA · Religion Related · Latest available filing year: 2022 · Primary form: IRS Form 990

  46. Silent Rhythms Inc

    EIN 820681600 · Headquarters: Boxborough, MA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Silent Spring Institute Inc

    EIN 043237106 · Headquarters: NEWTON, MA, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Silk Road Center

    EIN 272342993 · Headquarters: Lexington, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Silk Road Educational Foundation Inc

    EIN 205819643 · Headquarters: Newton Center, MA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Silk Road Project Inc

    EIN 043444069 · Headquarters: SOMERVILLE, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Siloam Masonic Charitable Fund Inc

    EIN 882761777 · Headquarters: Westborough, MA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Silva Wingss Company

    EIN 843907395 · Headquarters: Tewksbury, MA, USA · Health Care · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  53. Silver Birch Foundation

    EIN 823521367 · Headquarters: BOSTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  54. Silver City Quilt Guild Inc

    EIN 651270095 · Headquarters: Taunton, MA, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Silver Creek Habitat Inc

    EIN 200766015 · Headquarters: Monson, MA, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Silver Helmet Inc

    EIN 460667100 · Headquarters: NORTON, MA, USA · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  57. Silver Hill Horace Mann Charter School Foundation Inc

    EIN 271242998 · Headquarters: HAVERHILL, MA, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  58. Silver Hill Parent Teacher Organization Inc

    EIN 830619268 · Headquarters: Haverhill, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. Silver Lake Boys Hockey Boosters

    EIN 392306529 · Headquarters: Kingston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Silver Lake Boys Soccer Boosters

    EIN 842967164 · Headquarters: Plympton, MA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. Silver Lake Int Pre Play Proj Inc

    EIN 473647312 · Headquarters: Kingston, MA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  62. Silver Lake Music Association

    EIN 300274291 · Headquarters: Kingston, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Silver Lake Regional High School Pto

    EIN 301373549 · Headquarters: Kingston, MA, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Silver Lake Regional Middle School Pto

    EIN 842003686 · Headquarters: KINGSTON, MA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Silver Lake Youth Cheerleading Inc

    EIN 472051540 · Headquarters: Kingston, MA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  66. Silver Lake Youth Football Inc

    EIN 272070596 · Headquarters: Kingston, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Silver Lining Mentoring Inc

    EIN 043575764 · Headquarters: WALTHAM, MA, USA · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990

  68. Silver Lining Transport Connect

    EIN 824838919 · Headquarters: Swansea, MA, US · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  69. Silver Meadow Inc

    EIN 223418980 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Silver Oak Jumper Tournament Llc

    EIN 814286486 · Headquarters: CONCORD, MA, USA · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990-EZ

  71. Silver Otter Strategies Inc

    EIN 822430909 · Headquarters: LYNN, MA, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Silver Spring Beach Association Inc

    EIN 043108281 · Headquarters: North Eastham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Silver Trumpet Ministries

    EIN 743138774 · Headquarters: West Barnstable, MA, US · Religion Related · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  74. Silverbacks Football

    EIN 842717080 · Headquarters: Lynn, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Silverlake Gridiron

    EIN 830656864 · Headquarters: Kingston, MA, US · Recreation & Sports · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  76. Silverman Family Foundation Inc Wolf & Company Pc

    EIN 043234201 · Headquarters: BOSTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  77. Silvermill Realty Corporation

    EIN 222552923 · Headquarters: Westfield, MA, USA · Community Improvement & Capacity Building · Latest available filing year: 2010 · Primary form: IRS Form 990

  78. Silversmith Youth Theatre Inc

    EIN 872663986 · Headquarters: Canton, MA, US · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  79. Silverthorne Theater Company

    EIN 364786849 · Headquarters: Greenfield, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  80. Silvio Cella Family Foundation Inc

    EIN 272427788 · Headquarters: BOSTON, MA, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  81. Simes House Foundation Inc

    EIN 273543531 · Headquarters: Manomet, MA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Simmons University

    EIN 042103629 · Headquarters: BOSTON, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Simon B Gottlieb Charitable Foundation

    EIN 856164064 · Headquarters: ALLSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  84. Simon of Cyrene Society Inc Co Weston Associates Inc

    EIN 042784791 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Simon W Robinson Lodge Af & Am

    EIN 237170377 · Headquarters: LEXINGTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Simon Willard Foundation

    EIN 884114857 · Headquarters: BOSTON, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  87. Simonds Golf Academy Inc

    EIN 993384821 · Headquarters: PLYMOUTH, MA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Simple Interactions Inc

    EIN 834601957 · Headquarters: Arlington, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. Simple Living Inc

    EIN 141900290 · Headquarters: AMESBURY, MA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Simple Things Inc

    EIN 454150811 · Headquarters: Boston, MA, US · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  91. Simplereads Inc

    EIN 332571703 · Headquarters: Ashland, MA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Simplesolutionsunited Inc

    EIN 931909626 · Headquarters: Brockton, MA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Simply Circus Corp

    EIN 841950536 · Headquarters: NEWTON, MA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Simply Donating Inc

    EIN 844633085 · Headquarters: WESTWOOD, MA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  95. Simply Safer Foundation

    EIN 272029061 · Headquarters: Wrentham, MA, US · Recreation & Sports · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  96. Simplyjith Foundation Inc

    EIN 472977370 · Headquarters: Andover, MA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  97. Sin City Project Inc

    EIN 921687573 · Headquarters: Beverly, MA, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  98. Sinai Mountain Investments

    EIN 874146652 · Headquarters: NORWOOD, MA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Sinai Temple

    EIN 061682814 · Headquarters: Springfield, MA, United States · Religion Related · Latest available filing year: 2023 · Primary form: IRS Form 990

  100. Sinai Temple Endowment Trust

    EIN 042655369 · Headquarters: SPRINGFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

First page and all pages