Unknown & Unclassified nonprofits in Pennsylvania

Unknown & Unclassified nonprofits in Pennsylvania. Browse 26,979 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 Gamma Rho Sorority Inc

    EIN 823409540 · Headquarters: DALLASTOWN, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Sigma Gamma Rho Sorority Inc

    EIN 912141083 · Headquarters: WEST CHESTER, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Sigma Gamma Rho Sorority Inc - Tau Zeta

    EIN 813218179 · Headquarters: Bethlehem, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Sigma Nu Fraternity

    EIN 231494341 · Headquarters: Gettysburg, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Sigma Nu Fraternity

    EIN 800567726 · Headquarters: PITTSBURGH, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Sigma Nu Fraternity Delta Delta Chapter

    EIN 240804142 · Headquarters: State College, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 230678363 · Headquarters: BERWICK, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 232577677 · Headquarters: Williamsport, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 236426591 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 341623759 · Headquarters: Quakertown, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 363792963 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 363886390 · Headquarters: Bryn Mawr, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 912048912 · Headquarters: Harrisburg, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Sigma Phi Delta Bk Alumni Association

    EIN 880865112 · Headquarters: Bartonsville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Sigma Phi Epsilon Fraternity Inc

    EIN 911981290 · Headquarters: Bethlehem, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  16. Sigma Phi Epsilon Fraternity Inc

    EIN 943178356 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. Sigma Phi Epsilon Fraternity Inc - Pennsylvania Beta Beta Chapter

    EIN 233038395 · Headquarters: PHILADELPHIA, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. Sigma Phi Epsilon Fraternity Inc Pa Rho Chapter

    EIN 943178359 · Headquarters: Villanova, PA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  19. Sigma Phi Society at Lehigh University Alumni Corporation

    EIN 455565463 · Headquarters: bethlehem, PA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  20. Sigma Pi Fraternity International Inc

    EIN 203684528 · Headquarters: Williamsport, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Sigma Pi Fraternity International Inc

    EIN 208014743 · Headquarters: Collegeville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sigma Pi Fraternity International Inc

    EIN 251820227 · Headquarters: Indiana, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sigma Pi Fraternity Theta Chapter

    EIN 240798435 · Headquarters: STATE COLLEGE, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Sigma Psi Zeta Sorority Inc - Alpha Psi

    EIN 874764687 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Sigma Sigma Phi

    EIN 830507899 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  26. Sigma Sigma Sigma Inc

    EIN 453370843 · Headquarters: Drexel Hill, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  27. Sigma Sigma Sigma Inc

    EIN 453793450 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  28. Sigma Sigma Sigma Inc

    EIN 454665957 · Headquarters: Mount Joy, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Sigma Tau Delta Robert Morris University Alpha Sigma Lambda Chap

    EIN 455214667 · Headquarters: Moon Township, PA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  30. Sigma Tau Gamma Fraternity D/b/a Gamma Tau

    EIN 237353676 · Headquarters: MILLERSVILLE, PA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  31. Sigma Theta Tau Fraternity Eta Epsilon Chapter

    EIN 363314858 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Sigma Theta Tau Inc

    EIN 232160239 · Headquarters: Jamison, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Sigma Theta Tau Inc

    EIN 236434830 · Headquarters: Villanova, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Sigma Theta Tau Inc

    EIN 237407405 · Headquarters: State College, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Sigma Theta Tau Inc

    EIN 256063593 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  36. Sigma Theta Tau Inc

    EIN 311042680 · Headquarters: PITTSBURGH, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  37. Sigma Theta Tau Inc

    EIN 311042704 · Headquarters: Indiana, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Sigma Theta Tau Inc

    EIN 311242962 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Sigma Theta Tau Inc

    EIN 311246727 · Headquarters: Scranton, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Sigma Theta Tau Inc

    EIN 311246729 · Headquarters: Warminster, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Sigma Theta Tau Inc

    EIN 311309935 · Headquarters: Mechanicsburg, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Sigma Theta Tau Inc

    EIN 311309943 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  43. Sigma Theta Tau Inc

    EIN 311309965 · Headquarters: Clarion, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Sigma Theta Tau Inc

    EIN 311309966 · Headquarters: Center Valley, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Sigma Theta Tau Inc

    EIN 311361612 · Headquarters: EDINBORO, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  46. Sigma Theta Tau Inc

    EIN 351928453 · Headquarters: Waynesburg, PA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  47. Sigma Theta Tau Inc

    EIN 351930594 · Headquarters: West Chester, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Sigma Theta Tau Inc

    EIN 363314854 · Headquarters: Dover, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Sigma Theta Tau Inc

    EIN 363314864 · Headquarters: Chester, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Sigma Theta Tau Inc

    EIN 363314873 · Headquarters: WILKES BARRE, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Sigma Theta Tau Inc

    EIN 363479045 · Headquarters: Dallas, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Sigma Theta Tau Inc

    EIN 363479061 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Sigma Theta Tau Inc

    EIN 363479091 · Headquarters: Bloomsburg, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  54. Sigma Theta Tau Inc

    EIN 621092039 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  55. Sigma Theta Tau International Inc

    EIN 236419889 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  56. Sigma Theta Tau International Inc

    EIN 311242895 · Headquarters: Gwynedd Valley, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Sigma Theta Tau International Inc

    EIN 351928455 · Headquarters: Scranton, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Sigma Theta Tau International Inc

    EIN 351988136 · Headquarters: Palmyra, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Sigma Theta Tau International Inc

    EIN 363314831 · Headquarters: Erie, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Sigma Theta Tau International Inc

    EIN 363479040 · Headquarters: Allentown, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Sigma Theta Tau International Inc

    EIN 384308670 · Headquarters: Greensburg, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Sigma Theta Tau International Inc

    EIN 900266191 · Headquarters: Bethlehem, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Sigma Theta Tau International Inc

    EIN 901029451 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Sigma Theta Tau International Inc

    EIN 912039504 · Headquarters: California, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  65. Sigma Theta Tau International Xi Beta Chapter

    EIN 351928457 · Headquarters: East Stroudsburg, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Sigma Xi University of Pittsburgh Chapter

    EIN 300592993 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  67. Sigmr Chi Fraternity

    EIN 454935562 · Headquarters: CLARION, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  68. Signal 10-13 Inc

    EIN 800309381 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  69. Signs & Wonders Ministries

    EIN 251641538 · Headquarters: ALIQUIPPA, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  70. Silas Brown Decd for W & J Coll

    EIN 256019751 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  71. Silesian Miners Group 1930

    EIN 250786305 · Headquarters: Bentleyville, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  72. Siltop Visions Preserve

    EIN 934225473 · Headquarters: BROOKVILLE, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Silver Lake Ladies Community Service Club

    EIN 232235903 · Headquarters: Brackney, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Silver Lake Rod and Gun Club

    EIN 232369973 · Headquarters: Hallstead, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Silver Lake Volunteer Fire Company Inc

    EIN 236399084 · Headquarters: BRACKNEY, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Silver Lake Volunteer Firefighters Relief Association

    EIN 233020703 · Headquarters: Brackney, PA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  77. Silver Lining Ferret Rescue

    EIN 870853429 · Headquarters: WHITEHALL, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Silver Spring Ambulance and Rescue

    EIN 237389823 · Headquarters: NEW KINGSTOWN, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. Silver Spring Dance Conservatory

    EIN 251622074 · Headquarters: SILVER SPRING, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. Silver Tip Hunting Club Inc

    EIN 232296661 · Headquarters: Kennett Square, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Silverbrook Rod & Gun Club Inc

    EIN 232596079 · Headquarters: MCADOO, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  82. Silverdale Volunteer Fire Company

    EIN 232024434 · Headquarters: SILVERDALE, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Simmons Alcid-tr-a & M Perpetual Tr

    EIN 046479449 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. Simmons Kids First Foundation Mitchell & Titus Llp

    EIN 651288505 · Headquarters: PHILADELPHIA, PA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  85. Simple Homes Fuller Center for Housing

    EIN 461473304 · Headquarters: PHILADELPHIA, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Simply Breathing

    EIN 611704261 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  87. Sinava Development Ventures

    EIN 842906835 · Headquarters: RIDLEY PARK, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  88. Singer Julia M Charitable Tr

    EIN 256018885 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  89. Singing City

    EIN 231516921 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Sinister Kings Mc

    EIN 461210364 · Headquarters: shamokin, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Sinking Spring High School Alumni Memorial Fund

    EIN 272667792 · Headquarters: Robesonia, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  92. Sinnamahoning Volunteer Fire Department

    EIN 256055871 · Headquarters: Sinnamahoning, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Sioux Hunting Club Inc C O Gary Wood

    EIN 510243899 · Headquarters: Beach Lake, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Sipler J Wesley Uw

    EIN 236224326 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  95. Sistatalkphl

    EIN 861788168 · Headquarters: LANSDOWNE, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Sister Thea Bowman Black Catholic Educational Foundation

    EIN 030322037 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Sisterly Love Collective

    EIN 991592134 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  98. Sisters Empowering Excellence Determination and Success

    EIN 810628758 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  99. Sisters of St Joseph Mission and Ministries Foundation

    EIN 472591434 · Headquarters: ERIE, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Sisters of St Joseph Neighborhood Network

    EIN 251853673 · Headquarters: Erie, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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