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IRS-authorized e-file provider · not the IRS

Nonprofit · EIN 23-7057442

OKLAHOMA ORNITHOLOGICAL SOCIETY

Tax-exempt · TULSA, OK 74153

Address and contacts

Address (IRS master file)
PO BOX 35413, TULSA, OK 74153-0413
In care of
% MICKLE DUGGAN
Mailing address (990-N for 2025)
Box 35413, Tulsa OK 74153
Principal officer (990-N for 2025)
Zachary Poland, 3123 E 48th St, Tulsa OK 74105

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 OKLAHOMA ORNITHOLOGICAL SOCIETY

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

IRS record

EIN
23-7057442
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
1970
Accounting year ends
December
Files
Form 990-N (e-Postcard)

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-N for 2025
Officer: Zachary Poland
December 31, 2025≤ $50,000 receipts––e-Postcard
990-N for 2024
Officer: Zachary Poland
December 31, 2024≤ $50,000 receipts––e-Postcard
990-N for 2023
Officer: Jeff Tibbits
December 31, 2023≤ $50,000 receipts––e-Postcard
990-N for 2022
Officer: Jeff Tibbits
December 31, 2022≤ $50,000 receipts––e-Postcard
990-N for 2020
Officer: Matthew R Fullerton
December 31, 2020≤ $50,000 receipts––e-Postcard
990-N for 2019
Officer: Mickle Dugan
December 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 23-7057442).

Questions about OKLAHOMA ORNITHOLOGICAL SOCIETY

What is the EIN of OKLAHOMA ORNITHOLOGICAL SOCIETY?
The employer identification number (EIN) of OKLAHOMA ORNITHOLOGICAL SOCIETY is 23-7057442.
Is OKLAHOMA ORNITHOLOGICAL SOCIETY tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1970.
Are donations to OKLAHOMA ORNITHOLOGICAL SOCIETY tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does OKLAHOMA ORNITHOLOGICAL SOCIETY file?
Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
When is the next return of OKLAHOMA ORNITHOLOGICAL SOCIETY 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 OKLAHOMA ORNITHOLOGICAL SOCIETY 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 OKLAHOMA ORNITHOLOGICAL SOCIETY?
The 990-N for 2025 names Zachary Poland.

Other nonprofits in TULSA

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