City of O'Fallon: Single Audit Reports and Findings
City of O'Fallon filed 5 single audits between 2021 and 2025; the most recently observed auditor is Sikich CPA LLC (2025), and the 2025 report lists 0 findings. Data as of 2026-09-18.
Data as of Sep 18, 2026 · Source: Federal Audit Clearinghouse (public data)
Single audits by year
One row per audit year as the Federal Audit Clearinghouse accepted it. The auditor named is the one observed on that filing; City of O'Fallon is recorded in OFALLON, Illinois under EIN 376001979, and the Clearinghouse records it as a local government.
| Audit year | Fiscal year end | Federal expended | Threshold applied | Auditor observed | Findings | MW / SD | FAC report |
|---|---|---|---|---|---|---|---|
| 2025 | 2025-04-30 | $979,554 | $750,000 | Sikich CPA LLC | 0 | — | 2025-04-GSAFAC-0000385818 |
| 2024 | 2024-04-30 | $3,575,511 | $750,000 | Sikich CPA LLC | 0 | — | 2024-04-GSAFAC-0000064335 |
| 2023 | 2023-04-30 | $3,736,251 | $750,000 | SIKICH LLP | 0 | MW | 2023-04-GSAFAC-0000007647 |
| 2022 | 2022-04-30 | $2,813,484 | $750,000 | SIKICH LLP | 0 | SD | 2022-04-CENSUS-0000186348 |
| 2021 | 2021-04-30 | $2,189,981 | $750,000 | SIKICH LLP | 0 | SD | 2021-04-CENSUS-0000186348 |
Which federal programs did this organization report?
From the most recent accepted report. "Major" is the designation the auditor made under 2 CFR 200.518, not ours.
| ALN | Program | Expended | Major |
|---|---|---|---|
| 20.205 | HIGHWAY PLANNING AND CONSTRUCTION | $805,960 | Yes |
| 16.922 | EQUITABLE SHARING PROGRAM | $100,546 | No |
| 97.067 | HOMELAND SECURITY GRANT PROGRAM | $48,287 | No |
| 16.000 | DEA STATE AND LOCAL TASK FORCE AGREEMENT | $18,671 | No |
| 20.600 | STATE AND COMMUNITY HIGHWAY SAFETY | $5,042 | No |
| 16.607 | BULLETPROOF VEST PARTNERSHIP PROGRAM | $1,048 | No |
What findings did the auditor report?
The reference and the requirement letter are the ones the auditor used. The finding text itself is not reproduced here; the FAC report linked above carries it in full.
The most recent report lists no finding.
Read next
- CPA firms that audit Illinois nonprofits
- Illinois single audit statistics
- Illinois nonprofit audit requirements
How we computed this
Every row comes from the Federal Audit Clearinghouse record named beside it, one report per audit year, with a resubmission superseding the filing it replaces. The auditor is the one named on that filing — it is not a statement about who audits City of O'Fallon now. Form 990 figures come from the IRS e-filed return named by its object id. This page exists because the organization filed at least two single audits, or one with a finding.
Cite this page
AuditRadar. “City of O'Fallon Single Audits and Findings (IL).” https://getauditradar.com/single-audits/il/city-of-o-fallon-376001979/. Data as of 2026-09-18.