Nonprofits in Maryland

Nonprofits in Maryland. Browse 47,413 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 Chi College Park Alumni Chapter Inc

    EIN 208650679 · Headquarters: Crofton, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Sigma Chi Fraternity

    EIN 800589584 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  3. Sigma Chi Gamma Chi Inc

    EIN 271499492 · Headquarters: Olney, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. Sigma Delta Epsilon Graduate Women in Science Inc

    EIN 526055597 · Headquarters: Woodstock, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Sigma Delta Epsilon Graduate Womens Scientific Frat

    EIN 814636513 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  6. Sigma Delta Kappa Intercollegiate Law Fraternity

    EIN 521467465 · Headquarters: PASADENA, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Sigma Delta Kappa Law Foundation Inc

    EIN 521584527 · Headquarters: Pasadena, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Sigma Delta Tau Sorority Alpha Theta Chapter

    EIN 520634751 · Headquarters: COLLEGE PARK, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Sigma Gamma Rho Sorority

    EIN 392509654 · Headquarters: GWYNN OAK, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Sigma Gamma Rho Sorority - Eta Theta Sigma

    EIN 814248022 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Sigma Gamma Rho Sorority Inc

    EIN 030595607 · Headquarters: ELLICOTT CITY, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Sigma Gamma Rho Sorority Inc

    EIN 204238067 · Headquarters: WALDORF, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  13. Sigma Gamma Rho Sorority Inc

    EIN 204621289 · Headquarters: Frostburg, MD, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  14. Sigma Gamma Rho Sorority Inc

    EIN 260650537 · Headquarters: NOTTINGHAM, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Sigma Gamma Rho Sorority Inc

    EIN 270193700 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Sigma Gamma Rho Sorority Inc

    EIN 311321561 · Headquarters: RANDALLSTOWN, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Sigma Gamma Rho Sorority Inc

    EIN 311321569 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  18. Sigma Gamma Rho Sorority Inc

    EIN 311371891 · Headquarters: COLLEGE PARK, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Sigma Gamma Rho Sorority Inc

    EIN 311391169 · Headquarters: BOWIE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Sigma Gamma Rho Sorority Inc

    EIN 311433361 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  21. Sigma Gamma Rho Sorority Inc

    EIN 365030726 · Headquarters: Frederick, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sigma Gamma Rho Sorority Inc

    EIN 521592349 · Headquarters: LARGO, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sigma Gamma Rho Sorority Inc

    EIN 521715028 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Sigma Gamma Rho Sorority Inc

    EIN 526056440 · Headquarters: LANDOVER, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Sigma Gamma Rho Sorority Inc

    EIN 526065456 · Headquarters: Baltimore, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Sigma Gamma Rho Sorority Inc

    EIN 526078078 · Headquarters: BALTIMORE, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Sigma Gamma Rho Sorority Inc

    EIN 814630720 · Headquarters: ABERDEEN, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Sigma Gamma Rho Sorority Inc

    EIN 900501267 · Headquarters: SILVER SPRING, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Sigma Gamma Rho Sorority Inc Mu Omicron Sigma Chapter

    EIN 824215575 · Headquarters: Hughesville, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Sigma Gamma Rho Sorority Incorporated

    EIN 811409160 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  31. Sigma Gamma Tau National Honor Society in Aerospace Engineering

    EIN 526074186 · Headquarters: College Park, MD, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  32. Sigma Lambda Xi Fraternity

    EIN 821898730 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  33. Sigma Mu Sigma Foundation Ltd

    EIN 863640811 · Headquarters: LANHAM, MD, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  34. Sigma Nu Fraternity

    EIN 520485214 · Headquarters: COLLEGE PARK, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Sigma Omega Alumni Association

    EIN 873122300 · Headquarters: Clinton, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 521381672 · Headquarters: Cumberland, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 596182244 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Sigma Phi Delta Foundation

    EIN 341692235 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Sigma Phi Epsilon Fraternity Inc

    EIN 934654801 · Headquarters: COLLEGE PARK, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Sigma Phi Epsilon University of Maryland College Park Md Beta Chapter

    EIN 334344326 · Headquarters: ARNOLD, MD, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Sigma Phi Gamma International Sorority Inc

    EIN 300457953 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  42. Sigma Phi Gamma International Sorority Inc

    EIN 520815402 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  43. Sigma Phi Gamma International Sorority Inc

    EIN 521794365 · Headquarters: Fort Washington, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  44. Sigma Phi Gamma International Sorority Inc

    EIN 526015341 · Headquarters: Towson, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  45. Sigma Phi Gamma International Sorority Inc

    EIN 526055454 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  46. Sigma Phi Gamma International Sorority Inc

    EIN 526056548 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  47. Sigma Phi Gamma International Sorority Inc

    EIN 526056638 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  48. Sigma Phi Gamma International Sorority Inc

    EIN 526056932 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  49. Sigma Phi Gamma International Sorority Inc

    EIN 536018778 · Headquarters: Dunkirk, MD, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  50. Sigma Pi Fraternity International Inc

    EIN 352194599 · Headquarters: Fruitland, MD, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  51. Sigma Reach

    EIN 454913997 · Headquarters: Randallstown, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Sigma Sigma Sigma Inc

    EIN 464698403 · Headquarters: Bel Air, MD, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  53. Sigma Tau Gamma Eta Lambda

    EIN 833166425 · Headquarters: COLLEGE PARK, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  54. Sigma Tau Gamma Fraternity

    EIN 871688999 · Headquarters: TOWSON, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. Sigma Theta Tau Inc

    EIN 311309932 · Headquarters: Salisbury, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Sigma Theta Tau Inc

    EIN 311361607 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Sigma Theta Tau Inc

    EIN 363479085 · Headquarters: Towson, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Sigma Theta Tau Inc

    EIN 526045368 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Sigma Theta Tau International Inc

    EIN 311309955 · Headquarters: Baltimore, MD, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  60. Sigma Xi the Scientific Research Society District of Columbia Chapt

    EIN 521076519 · Headquarters: Laurel, MD, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  61. Sigma Xi the Scientific Research Society of North America-universit

    EIN 237272291 · Headquarters: Baldwin, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sigmas for Humanity Inc

    EIN 474911756 · Headquarters: PERRYHALL, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Sigmund M Hyman Foundation Inc

    EIN 526034760 · Headquarters: BALTIMORE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  64. Sign Language Research Inc

    EIN 521156661 · Headquarters: Bowie, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  65. Signa Inc

    EIN 822130756 · Headquarters: Ellicott City, MD, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Signal Financial Charitable Foundation Inc

    EIN 845032146 · Headquarters: KENSINGTON, MD, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Signs and Wonders Gospel Ministries

    EIN 203483128 · Headquarters: CUMBERLAND, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. Sikh Human Development Foundation

    EIN 522171746 · Headquarters: POTOMAC, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. Sikh International Council Inc

    EIN 823795436 · Headquarters: SILVER SPRING, MD, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  70. Sikh Kid 2 Kid Inc

    EIN 811700991 · Headquarters: Potomac, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  71. Sikh Youth Commission Inc

    EIN 522285950 · Headquarters: Beltsville, MD, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Sikhs of America Inc

    EIN 474201763 · Headquarters: LANHAM, MD, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Silberstein Family Foundation

    EIN 814807098 · Headquarters: BROOKLANDVILLE, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  74. Sile Tiwlid

    EIN 931380222 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  75. Silent Children Project Inc

    EIN 262580826 · Headquarters: Germantown, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Silent Rank Sisterhood Inc

    EIN 364727772 · Headquarters: Edgewater, MD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  77. Silent Veterans

    EIN 882153128 · Headquarters: Pikesville, MD, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Silesia Citizens Foundation Inc

    EIN 300322756 · Headquarters: Fort Washington, MD, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  79. Silhouette Stages Inc

    EIN 270505078 · Headquarters: ELLICOTT CITY, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  80. Silk Road Dance Company Inc

    EIN 542055259 · Headquarters: Takoma Park, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  81. Silky Smooth Dance Studio Dmv Inc

    EIN 862320707 · Headquarters: UPPER MARLBORO, MD, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. Sillery Bay Hunters Harbor Civic and Recreation Association Inc

    EIN 521141996 · Headquarters: PASADENA, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  83. Sillery Bay Improvement Association Inc

    EIN 237423484 · Headquarters: Pasadena, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Siloam Springs International Foundation

    EIN 923835353 · Headquarters: Gaithersburg, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Silver and Gold Home Care

    EIN 831697138 · Headquarters: Laurel, MD, US · Health Care · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  86. Silver Canady Charitable Collective Inc

    EIN 861729535 · Headquarters: BOWIE, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Silver Flower Homes Inc

    EIN 383870850 · Headquarters: ROCKVILLE, MD, USA · Housing & Shelter · Latest available filing year: 2022 · Primary form: IRS Form 990

  88. Silver Heel Foundation Inc

    EIN 462332823 · Headquarters: Chestertown, MD, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Silver Hill Volunteer Fire Dep

    EIN 520741971 · Headquarters: SUITLAND, MD, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990

  90. Silver Lining

    EIN 271547408 · Headquarters: Gaithersburg, MD, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Silver Oak Academy

    EIN 270407260 · Headquarters: KEYMAR, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Silver Oaks Cooperative School Inc

    EIN 821791736 · Headquarters: SILVER SPRING, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Silver Pennies Incorporated

    EIN 264096496 · Headquarters: Bel Air, MD, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Silver Sat Limited

    EIN 813014466 · Headquarters: Silver Spring, MD, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Silver Spoons Inc

    EIN 320694839 · Headquarters: Bowie, MD, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Silver Spring Alumni Chapter

    EIN 237203686 · Headquarters: Silver Spring, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  97. Silver Spring Cares Inc

    EIN 821389310 · Headquarters: SILVER SPRING, MD, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  98. Silver Spring Chapter 1160 Women of the Moose

    EIN 237164009 · Headquarters: Silver Spring, MD, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  99. Silver Spring Child Day Care Association Association Inc

    EIN 520936351 · Headquarters: SILVER SPRING, MD, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Silver Spring Day School Inc

    EIN 201337670 · Headquarters: SILVER SPRING, MD, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

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