Unknown & Unclassified nonprofits
Unknown & Unclassified nonprofits. Browse 557,756 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
- Massachusetts Orchid Society
EIN 043035406 · Headquarters: Medford, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts Orthopaedic Association Inc
EIN 042760289 · Headquarters: Natick, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- Massachusetts Osteopathic Society Inc
EIN 046112338 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts Package Store Association Inc
EIN 041590893 · Headquarters: WESTBOROUGH, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Massachusetts Paralegal Association Inc
EIN 042634163 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts Parent Action
EIN 822269311 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Massachusetts Parent Teacher Association Inc
EIN 237283413 · Headquarters: Somerville, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts Partnerships for Youth Inc
EIN 222975263 · Headquarters: Wakefield, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990
- Massachusetts Patient Advocacy Alliance Inc
EIN 461844320 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- Massachusetts Peace Action Inc
EIN 043082045 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Massachusetts Pharmacists Association Corp
EIN 042041538 · Headquarters: Dracut, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Massachusetts Police Association Inc C/o Jon Bailey
EIN 042635521 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Port Authority Fire Fighters IAFF Local S-2
EIN 510226909 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Postal Employees Credit Union
EIN 041564035 · Headquarters: LYNN, MA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990
- Massachusetts Pre Engineering Program Inc
EIN 042674453 · Headquarters: Dorchester, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Massachusetts Psychiatric Society Inc
EIN 042383343 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Massachusetts Psychological Association Inc
EIN 042393951 · Headquarters: WELLESLEY, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- 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
- 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
- Massachusetts Public Interest Research Group Inc
EIN 042536325 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- 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
- Massachusetts Radiological Society Inc
EIN 237051966 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- 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
- Massachusetts Recreational Consumer Council
EIN 820809380 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Massachusetts Rental Housing Association Inc
EIN 222546900 · Headquarters: HAVERHILL, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- Massachusetts Rhode Island and Maine Chapter of the Appraisal Institute
EIN 043142316 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Massachusetts Rifle Association
EIN 046059251 · Headquarters: WOBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- 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
- Massachusetts School Councelors Association Inc
EIN 237149656 · Headquarters: Hampden, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts School Nurse Organization
EIN 042601335 · Headquarters: Hudson, MA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- Massachusetts Science & Engineering Fair Inc
EIN 042707499 · Headquarters: CAMBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Senior Care Association Inc
EIN 042372909 · Headquarters: EASTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Senior Care Foundation Inc
EIN 222627130 · Headquarters: EASTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- 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
- Massachusetts Smoke Free Association Inc
EIN 474475986 · Headquarters: Newton, MA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N
- 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
- 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
- Massachusetts Society for Promoting Agriculture
EIN 042265469 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Massachusetts Society of Anesthesiologists Inc
EIN 046180165 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Massachusetts Society of Clinical Oncologists Inc
EIN 042863899 · Headquarters: WALTHAM, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Society of Cpa's Inc
EIN 042055313 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Society of Enrolled Agents
EIN 222793542 · Headquarters: IPSWICH, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Massachusetts Society of Genealogists Inc
EIN 222564825 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Massachusetts Society of Genealogists Inc
EIN 222564828 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Massachusetts Society of Genealogists Inc
EIN 222564833 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts Society of Genealogists Inc
EIN 371603474 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- 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
- Massachusetts Society of Optometrists Inc
EIN 042281590 · Headquarters: AUBURN, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts Society of Pathologists Inc
EIN 042577082 · Headquarters: MEDFORD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- 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
- 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
- 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
- Massachusetts Society of the Cincinnati
EIN 046046761 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF
- 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
- Massachusetts Socity of Genealogists Inc
EIN 222564829 · Headquarters: Ashland, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Massachusetts Specialty Foods Assoc
EIN 042998082 · Headquarters: Groton, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Massachusetts Speech-language Hearing Association Inc
EIN 042631796 · Headquarters: LAKE JUNALUSKA, NC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- 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
- Massachusetts Sportsmens Council Incorporated
EIN 042925838 · Headquarters: Rockland, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts Squash Racquets Association Inc
EIN 222543941 · Headquarters: Billerica, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- 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
- Massachusetts Staffing Association
EIN 043050320 · Headquarters: ANDOVER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts State Automobile Dealers Association Inc
EIN 041591143 · Headquarters: Boston, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts State College Assoc Massachusetts College of Art Chap
EIN 043143596 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Massachusetts State College Association
EIN 043247930 · Headquarters: BRIDGEWATER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts State Council Knights of Columbus Building Association Inc
EIN 042893855 · Headquarters: NORWOOD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- Massachusetts State Council of Shrm Inc
EIN 264248581 · Headquarters: Worcester, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- Massachusetts State Council of the Emergency Nurses Association Inc
EIN 042817285 · Headquarters: SOUTH EASTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts State Council Service Employees International Union
EIN 043194461 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- Massachusetts State Employees
EIN 041866740 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990
- Massachusetts State Grange P of H Inc
EIN 041591155 · Headquarters: PALMER, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 042963438 · Headquarters: Lakeview, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518272 · Headquarters: Haverhill, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518276 · Headquarters: Pittsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518277 · Headquarters: Rutland, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518279 · Headquarters: Northbridge, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518286 · Headquarters: Dunstable, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518288 · Headquarters: South Deerfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518289 · Headquarters: Southwick, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518291 · Headquarters: New Marlborough, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518293 · Headquarters: Rochester, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518297 · Headquarters: Allston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518299 · Headquarters: Hillsboro, NH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518306 · Headquarters: Greenfield, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518309 · Headquarters: Groton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518311 · Headquarters: Pittsfield, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518315 · Headquarters: Peru, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518317 · Headquarters: Boylston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518323 · Headquarters: Southwick, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518325 · Headquarters: Lancaster, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518332 · Headquarters: Shelburne, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518334 · Headquarters: Pepperell, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518336 · Headquarters: Rutland, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518339 · Headquarters: Orange, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518342 · Headquarters: Charlton, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518343 · Headquarters: Petersham, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518364 · Headquarters: Holliston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518366 · Headquarters: Norfolk, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518370 · Headquarters: Essex, MA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- Massachusetts State Grange Patrons of Husbandry Inc
EIN 237518376 · Headquarters: Swansea, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N