Pilot · Updated May 2026
How to Change Your Name in Cook County (2026 Cost + Fees)
The cost of a legal name change in Cook County is typically between $430–$520 for many petitioners, which includes a $388 court filing fee and $12 typical certified copy fee (per copy estimate), plus passport or DMV updates you select afterward.
| Court filing fee (estimate) | $388 |
| Certified copy fee (estimate) | $12 |
| Publication | Not modeled |
| Fingerprinting | Not modeled |
| Total modeled range | $430 – $520 |
| Processing time | ~6-10 weeks |
Fee verified stamp: 2026-05.
Reason-specific guides in Illinois
Official resources
Return to the Illinois statewide hub or open the calculator.