Nonprofit · EIN 36-2929335
OAK BROOK HISTORICAL SOCIETY
Tax-exempt · OAK BROOK, IL 60523
Address and contacts
- Address (IRS master file)
- 1112 OAK BROOK RD, OAK BROOK, IL 60523-2272
- Mailing address (990-N for 2025)
- 1112 Oak Brook Rd, Oak Brook IL 60523
- Principal officer (990-N for 2025)
- Elizabeth Arts, 1112 Oak Brook Rd, Oak Brook IL 60523
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 April, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | April 30, 2026 | September 15, 2026 | 990-N on file |
| 2024 | April 30, 2025 | September 15, 2025 | 990-N on file |
| 2023 | April 30, 2024 | September 16, 2024 | 990-N on file |
IRS record
- EIN
- 36-2929335
- 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
- 1977
- Accounting year ends
- April
- Files
- Form 990-N (e-Postcard)
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990-N for 2025 Officer: Elizabeth Arts | April 30, 2026 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2024 Officer: ELIZABETH ARTS | April 30, 2025 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2023 Officer: LISA GRIFFITH | April 30, 2024 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2021 Officer: KATHY MAHER | April 30, 2022 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2020 Officer: KATHY MAHER | April 30, 2021 | ≤ $50,000 receipts | – | – | e-Postcard |
| 990-N for 2019 Officer: KATHY MAHER | April 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 36-2929335).
Questions about OAK BROOK HISTORICAL SOCIETY
- What is the EIN of OAK BROOK HISTORICAL SOCIETY?
- The employer identification number (EIN) of OAK BROOK HISTORICAL SOCIETY is 36-2929335.
- Is OAK BROOK HISTORICAL SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1977.
- Are donations to OAK BROOK HISTORICAL SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does OAK BROOK HISTORICAL SOCIETY file?
- Form 990-N (e-Postcard). Gross receipts normally $50,000 or less.
- When is the next return of OAK BROOK HISTORICAL SOCIETY due?
- The return for tax year 2026 (the year ending April 30, 2027) is due September 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did OAK BROOK HISTORICAL SOCIETY last file with the IRS?
- The latest return in the IRS public files is the 990-N for 2025 for the year ended April 30, 2026.
- Who is the principal officer of OAK BROOK HISTORICAL SOCIETY?
- The 990-N for 2025 names Elizabeth Arts.
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