# Tax Preparation in Oak Brook, IL

- Credentialed preparers: 226 (102 CPAs, 19 EAs, 13 attorneys)
- Population: 8,091 · 279.3 preparers per 10k residents
- Returns filed: 5,550 · Avg AGI: $371,989
- Avg refund: $11,105 (46% of returns)
- Self-employment share: 20.4% · Paid-preparer share: 74%

Source: IRS PTIN + SOI public data. taxprepservicehq.com/illinois/oak-brook/