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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 11-3142292

HISTORICAL SOCIETY OF ISLIP HAMLET

Tax-exempt · ISLIP, NY 11751

Address and contacts

Address (IRS master file)
PO BOX 601, ISLIP, NY 11751-0601
In care of
% ARLENE GOLDMAN
Mailing address (990-N for 2025)
PO Box 601, Islip NY 11751
Principal officer (990-N for 2025)
Dianne Berton, 7 Bay 3rd Street, ISLIP NY 11751

What it must file and when

IRS records say it files Form 990-N (e-Postcard). Gross receipts normally $50,000 or less. Its accounting year ends in June, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025June 30, 2026November 16, 2026990-N on file
2024June 30, 2025November 17, 2025990-N on file
2023June 30, 2024November 15, 2024990-N on file

File the 2026 990-N for HISTORICAL SOCIETY OF ISLIP HAMLET

Due November 15, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
11-3142292
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (509(a)(2))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
1998
Accounting year ends
June
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Dianne Berton
June 30, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Dianne Berton
June 30, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Kelly Weiss
June 30, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Kelly Weiss
June 30, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Madeline Hanewinckel
June 30, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: madeline HANEWINCKEL
June 30, 2020≤ $50,000 receipts––e-Postcard

990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 11-3142292).

Questions about HISTORICAL SOCIETY OF ISLIP HAMLET

What is the EIN of HISTORICAL SOCIETY OF ISLIP HAMLET?
The employer identification number (EIN) of HISTORICAL SOCIETY OF ISLIP HAMLET is 11-3142292.
Is HISTORICAL SOCIETY OF ISLIP HAMLET tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1998.
Are donations to HISTORICAL SOCIETY OF ISLIP HAMLET tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does HISTORICAL SOCIETY OF ISLIP HAMLET file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of HISTORICAL SOCIETY OF ISLIP HAMLET due?
The return for tax year 2026 (the year ending June 30, 2027) is due November 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did HISTORICAL SOCIETY OF ISLIP HAMLET last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended June 30, 2026.
Who is the principal officer of HISTORICAL SOCIETY OF ISLIP HAMLET?
The 990-N for 2025 names Dianne Berton.

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