Skip to main content
IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 88-4214948

PUBLIC DATA LIBRARY INC

Also known as PUBLIC DATA LIBRARY

Tax-exempt · SAN MATEO, CA 94402

Address and contacts

Address (IRS master file)
PO BOX 5446, SAN MATEO, CA 94402-0446
Mailing address (990-N for 2025)
PO Box 5446, San Mateo CA 94402
Principal officer (990-N for 2025)
Sergio Zygmunt, PO BOX 5409, San Mateo CA 94402

California records

California keeps its own records of charities and corporations. Search them by EIN 88-4214948 or by the name PUBLIC DATA LIBRARY INC.

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

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-N on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024990-N on file

File the 2026 990-N for PUBLIC DATA LIBRARY INC

Due May 17, 2027 · e-filed with the IRS by 990.tax, an IRS-authorized e-file provider

IRS record

EIN
88-4214948
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
2022
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Sergio Zygmunt
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Sergio Zygmunt
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Sergio Zygmunt
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Sergio Zygmunt
December 31, 2022≤ $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 88-4214948).

Questions about PUBLIC DATA LIBRARY INC

What is the EIN of PUBLIC DATA LIBRARY INC?
The employer identification number (EIN) of PUBLIC DATA LIBRARY INC is 88-4214948.
Is PUBLIC DATA LIBRARY INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2022.
Are donations to PUBLIC DATA LIBRARY INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does PUBLIC DATA LIBRARY INC file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of PUBLIC DATA LIBRARY INC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did PUBLIC DATA LIBRARY INC last file with the IRS?
The latest return in the IRS public files is the 990-N for 2025 for the year ended December 31, 2025.
Who is the principal officer of PUBLIC DATA LIBRARY INC?
The 990-N for 2025 names Sergio Zygmunt.

Other nonprofits in SAN MATEO

All nonprofits in SAN MATEO · California · Public and societal benefit