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Nonprofit · EIN 39-3592434

SOUTH DENVER HISTORIC MUSEUM

Tax-exempt · DENVER, CO 80209

Address and contacts

Address (IRS master file)
408 S LINCOLN ST, DENVER, CO 80209-1625
In care of
% BRITTANY S SPINNER
Mailing address (990-N for 2025)
408 S Lincoln St, Denver CO 80209
Principal officer (990-N for 2025)
Brittany S Spinner, 408 S Lincoln St, Denver CO 80209

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 May, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025May 31, 2026October 15, 2026990-N on file
2024May 31, 2025October 15, 2025Check at the IRS
2023May 31, 2024October 15, 2024Check at the IRS

IRS record

EIN
39-3592434
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2026
Accounting year ends
May
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Brittany S Spinner
May 31, 2026≤ $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 39-3592434).

Questions about SOUTH DENVER HISTORIC MUSEUM

What is the EIN of SOUTH DENVER HISTORIC MUSEUM?
The employer identification number (EIN) of SOUTH DENVER HISTORIC MUSEUM is 39-3592434.
Is SOUTH DENVER HISTORIC MUSEUM tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2026.
Are donations to SOUTH DENVER HISTORIC MUSEUM tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SOUTH DENVER HISTORIC MUSEUM file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SOUTH DENVER HISTORIC MUSEUM due?
The return for tax year 2026 (the year ending May 31, 2027) is due October 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did SOUTH DENVER HISTORIC MUSEUM last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended May 31, 2026.
Who is the principal officer of SOUTH DENVER HISTORIC MUSEUM?
The 990-N for 2025 names Brittany S Spinner.

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