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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 23-7366613

SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY

Tax-exempt · SAN DIEGO, CA 92138

Address and contacts

Address (IRS master file)
PO BOX 81106, SAN DIEGO, CA 92138-1106
In care of
% CHRISTINE LAMBERT
Mailing address (990-N for 2025)
PO Box 81106, San Diego CA 92138
Principal officer (990-N for 2025)
Kurt Dilores, 3753 Granada Ave, San Diego CA 92111

California records

California keeps its own records of charities and corporations. Search them by EIN 23-7366613 or by the name SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY.

Attorney General, Registry of Charities and Fundraisers
Registration status and filed reports (CT-TR-1, RRF-1)

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, 2025990-N on file
2023May 31, 2024October 15, 2024990-N on file

File the 2026 990-N for SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY

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

IRS record

EIN
23-7366613
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
1973
Accounting year ends
May
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Kurt Dilores
May 31, 2026≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Kurt Dilores
May 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Christine Lambert
May 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Christine Lambert
May 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Christine Lambert
May 31, 2021≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Christine Lambert
May 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2018
Officer: Mary Robbins-Wade
May 31, 2019≤ $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 23-7366613).

Questions about SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY

What is the EIN of SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY?
The employer identification number (EIN) of SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY is 23-7366613.
Is SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1973.
Are donations to SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY 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 SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY 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 SAN DIEGO COUNTY ARCHAEOLOGICAL SOCIETY?
The 990-N for 2025 names Kurt Dilores.

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