Nonprofits in Connecticut
Nonprofits in Connecticut. Browse 26,993 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
- Key Club International
EIN 066105372 · Headquarters: Shelton, CT, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Key Club International
EIN 237446994 · Headquarters: MILFORD, CT, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- Key Human Services Inc
EIN 061259340 · Headquarters: ROCKY HILL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Key Lifestyle Foundation Inc
EIN 811704320 · Headquarters: STAMFORD, CT, US · Youth Development · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Keys Foundation Inc
EIN 223026241 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-PF
- Keys to the Gate Community Village
EIN 824224160 · Headquarters: Hartford, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Keystone House Inc
EIN 237228237 · Headquarters: NORWALK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Keystone T-hanger Condominium Association Inc
EIN 061578646 · Headquarters: OXFORD, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Kfk Dancing for Life Inc
EIN 061408420 · Headquarters: NORTH HAVEN, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Khairi S Fortt Foundation Inc
EIN 474265379 · Headquarters: STAMFORD, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Khmer Health Advocates Inc
EIN 061072240 · Headquarters: Naugatuck, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Khmer Magic Music Bus Inc
EIN 465250955 · Headquarters: WEST HARTFORD, CT, US · Arts, Culture & Humanities · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- Khodadoust Eye Foundation Inc
EIN 061601918 · Headquarters: GUILFORD, CT, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2013 · Primary form: IRS Form 990-PF
- Kick for a Cause
EIN 203807590 · Headquarters: Shelton, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kick for Nick Ct Soccer Program Inc
EIN 831465229 · Headquarters: WILTON, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Kick for Nick Foundation Inc
EIN 743255044 · Headquarters: DANBURY, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Kick It for Keith Inc
EIN 465767092 · Headquarters: STAMFORD, CT, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kid Packs of America Inc
EIN 311714616 · Headquarters: Clinton, CT, US · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-N
- Kid Protection Network Inc
EIN 223324532 · Headquarters: Storrs Mansfield, CT, US · Crime & Legal Related · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Kid-u-not Living Organ Donor Fund Inc
EIN 825402646 · Headquarters: BRANFORD, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kidcity Inc
EIN 223396732 · Headquarters: MIDDLETOWN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kidneylife Foundation Inc Dba the Kidney Registry
EIN 260478690 · Headquarters: GREENWICH, CT, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2022 · Primary form: IRS Form 990
- Kids ' N U Inc
EIN 133757637 · Headquarters: DARIEN, CT, USA · Crime & Legal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ
- Kids 4 Public Service - U2 Can Do Math
EIN 812082226 · Headquarters: Middlefield, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids Affected by Addiction Foundation Inc
EIN 830646651 · Headquarters: Windsor, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids at Risk - Cambodia Inc
EIN 451836657 · Headquarters: West Haven, CT, US · International, Foreign Affairs & National Security · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Kids Cancer Foundation Inc
EIN 393142415 · Headquarters: Old Greenwich, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids Chance of Connecticut
EIN 825078085 · Headquarters: GLASTONBURY, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids Christmas Inc
EIN 061598717 · Headquarters: GRISWOLD, CT, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Kids Corner Education Initiative in C
EIN 394993119 · Headquarters: Farmington, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids Cup Charitable Tr
EIN 061429109 · Headquarters: Redding, CT, US · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids Empowered by Your Support Inc
EIN 204846463 · Headquarters: NEW CANAAN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kids First Enfield Inc
EIN 800311554 · Headquarters: WINDSOR LOCKS, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids for Casa Buna Inc
EIN 332277651 · Headquarters: Cos Cob, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids for Kids Inc
EIN 222755669 · Headquarters: Weatogue, CT, US · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Kids for World Together
EIN 453303084 · Headquarters: Greenwich, CT, USA · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ
- Kids from Nicaragua Friends of Roberto Clemente
EIN 364760002 · Headquarters: Norwalk, CT, USA · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ
- Kids Helping Kids
EIN 271224284 · Headquarters: Stamford, CT, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kids Helping Kids with a Smile Inc
EIN 472297568 · Headquarters: MADISON, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids Hugs Inc
EIN 472930302 · Headquarters: Guilford, CT, US · Mental Health & Crisis Intervention · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Kids in Crisis Inc
EIN 061027885 · Headquarters: COS COB, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kids in Limos Inc
EIN 260231906 · Headquarters: Tolland, CT, US · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- Kids Know Best Inc
EIN 923565509 · Headquarters: Old Greenwich, CT, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Kids Kraze Inc
EIN 473135524 · Headquarters: New Haven, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids N Action Inc
EIN 994177663 · Headquarters: STAMFORD, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Kids of Chatham Organization Inc
EIN 061239860 · Headquarters: EAST HAMPTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kids of Summer Foundation Inc
EIN 834422416 · Headquarters: WINSTED, CT, USA · Youth Development · Latest available filing year: 2022 · Primary form: IRS Form 990
- Kids Our Future Trust Fund
EIN 061340808 · Headquarters: STAMFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Kids Philippines Inc
EIN 814193634 · Headquarters: GRISWOLD, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kids Scholarship Fund Inc
EIN 061494714 · Headquarters: MADISON, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kids Teaching Kidz
EIN 463158609 · Headquarters: Pomfret Center, CT, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Kids Time by the Sea Inc
EIN 061541018 · Headquarters: FAIRFIELD, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Kids Who Help Kids
EIN 811070251 · Headquarters: Waterford, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Kids Who Tri Succeed Inc
EIN 472673736 · Headquarters: Unionville, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Kidsgivingorg Inc
EIN 842077621 · Headquarters: New Haven, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Kidsovercancer Foundation Inc
EIN 274591047 · Headquarters: WESTPORT, CT, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- KidsPlay Childrens Museum Inc
EIN 454928276 · Headquarters: Torrington, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kidswhocare Inc
EIN 261998006 · Headquarters: WOODBURY, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Kidz Give Back Foundation
EIN 275319463 · Headquarters: WESTPORT, CT, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Kidz Konnection Inc
EIN 264602817 · Headquarters: CLINTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- Kidz Kook Association
EIN 900851808 · Headquarters: New Haven, CT, US · Youth Development · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Kidzaid
EIN 770605730 · Headquarters: Ridgefield, CT, US · Youth Development · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Kief Protective Mutual Benefit Association
EIN 060626338 · Headquarters: BLOOMFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kikimo Foundation For Corruption & Poverty Eradication Inc
EIN 204826899 · Headquarters: NEW HAVEN, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Killingly Brooklyn Midget Football Association
EIN 237350421 · Headquarters: Danielson, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Killingly Brooklyn Rotary Club
EIN 066494109 · Headquarters: DANIELSON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Killingly Business Association Inc
EIN 061303304 · Headquarters: Killingly, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Killingly Flag Football Inc
EIN 824255650 · Headquarters: DANIELSON, CT, USA · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-PF
- Killingly High School Alumni Association
EIN 066172570 · Headquarters: DAYVILLE, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Killingly High School Athletic Association Hall of Fame Inc
EIN 932102978 · Headquarters: BROOKLYN, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Killingly High School Project Graduation
EIN 061356447 · Headquarters: Dayville, CT, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Killingly Historical and Genealogical Society Inc
EIN 061432279 · Headquarters: Danielson, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Killingly Little League Inc
EIN 061052908 · Headquarters: DAYVILLE, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Killingly Quiet Corner Regional Lions Club Inc
EIN 200652982 · Headquarters: EAST KILLINGLY, CT, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Killingly School of Music
EIN 842235248 · Headquarters: Danielson, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Killingly Wildlife Incorporated
EIN 331868574 · Headquarters: Killingly, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Killingly Youth Wrestling Club Inc
EIN 273973995 · Headquarters: Dayville, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Killingly-brooklyn Cultural Development Foundation Inc
EIN 237266555 · Headquarters: DANIELSON, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Killingworth Ambulance Association
EIN 060949842 · Headquarters: KILLINGWORTH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Killingworth Chamber of Commerce
EIN 061277748 · Headquarters: KILLINGWORTH, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ
- Killingworth Elementary School Parent-teacher Oragnization
EIN 061068046 · Headquarters: Killingworth, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Killingworth Foundation Inc
EIN 260319571 · Headquarters: KILLINGWORTH, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- Killingworth Historical Society
EIN 060858122 · Headquarters: Killingworth, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Killingworth Land Conservation Trust Inc
EIN 237315361 · Headquarters: KILLINGWORTH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Killingworth Library Association Inc
EIN 237050680 · Headquarters: Killingworth, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Killingworth Lions Charities Inc
EIN 061527709 · Headquarters: Killingworth, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Killingworth Nursery School Association
EIN 060839783 · Headquarters: KILLINGWORTH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Killingworth Scholarship Assoc
EIN 222477376 · Headquarters: Killingworth, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Killingworth Volunteer Fire Co Inc
EIN 060998909 · Headquarters: KILLINGWORTH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Killingworth Womens Organization- Gfwc Inc
EIN 352211149 · Headquarters: Killingworth, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kilowatt Club Inc
EIN 061046030 · Headquarters: East Hampton, CT, US · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- Kim and Martin Sands Family Foundation Inc
EIN 814795851 · Headquarters: GREENWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF
- Kim Sanghee Fellowship Inc
EIN 223465844 · Headquarters: HAMDEN, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- Kind Works Incorporated
EIN 994613268 · Headquarters: Bethel, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Kindcare Foundation Inc
EIN 991263388 · Headquarters: FAIRFIELD, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kindergarten Association of Connecticut Inc
EIN 061390530 · Headquarters: norwalk, CT, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- Kindness Goodness Benevolence Inc
EIN 852324586 · Headquarters: MYSTIC, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kindness Matters Farm Sanctuary Inc
EIN 333376405 · Headquarters: Avon, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Kindness Over Muscular Dystrophy Inc
EIN 842603015 · Headquarters: RIDGEFIELD, CT, USA · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990
- Kindred Spirits Equine Education & Therapy Center Inc
EIN 991488509 · Headquarters: COLUMBIA, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N