Illinois Probate Courts by County
Courthouse locations, filing fees, phone numbers, and e-filing requirements for Illinois's most active probate counties.
Last updated: June 2026 — Verify current fees with the Circuit Clerk before filing.
6
Counties Covered
$250–$450
Typical Filing Fee
9–12 months
Typical Timeline
$150,000
Small Estate Threshold
| County | Address | Phone | Filing Fee | E-Filing | Timeline |
|---|---|---|---|---|---|
| Cook County | Richard J. Daley Center 50 W. Washington St., Chicago, IL 60602 12th Floor, Room 1202 (Clerk); 18th Floor (Probate Division) | (312) 603-6441 | $250–$350 | Required | 9–12 months |
| DuPage County | DuPage County Courthouse 505 N. County Farm Rd., Wheaton, IL 60187 Clerk's Office, 1st Floor | (630) 407-8700 | $300–$400 | Required | 9–12 months |
| Lake County | Lake County Courthouse 18 N. County St., Waukegan, IL 60085 Circuit Clerk's Office, 1st Floor | (847) 377-3380 | $300–$400 | Required | 9–12 months |
| Will County | Will County Courthouse 14 W. Jefferson St., Joliet, IL 60432 Circuit Clerk's Office | (815) 727-8592 | $350–$450 | Required | 9–12 months |
| Kane County | Kane County Judicial Center 37W777 IL-38, St. Charles, IL 60175 Circuit Clerk's Office | (630) 232-3413 | $250–$350 | Required | 9–12 months |
| McHenry County | McHenry County Courthouse 2200 N. Seminary Ave., Woodstock, IL 60098 Room 136 (Clerk); Courtroom 202 (Probate Hearings) | (815) 334-4190 | $300–$400 | Required | 9–12 months |
County-by-County Details
Cook County Probate Court
Courthouse: Richard J. Daley Center
Address: 50 W. Washington St., Chicago, IL 60602
Floor/Room: 12th Floor, Room 1202 (Clerk); 18th Floor (Probate Division)
Phone: (312) 603-6441
Hours: Mon–Fri, 8:30 AM–4:30 PM
Filing Fee: $250–$350
E-Filing: Required
Typical Timeline: 9–12 months
DuPage County Probate Court
Courthouse: DuPage County Courthouse
Address: 505 N. County Farm Rd., Wheaton, IL 60187
Floor/Room: Clerk's Office, 1st Floor
Phone: (630) 407-8700
Hours: Mon–Fri, 8:00 AM–4:30 PM
Filing Fee: $300–$400
E-Filing: Required
Typical Timeline: 9–12 months
Lake County Probate Court
Courthouse: Lake County Courthouse
Address: 18 N. County St., Waukegan, IL 60085
Floor/Room: Circuit Clerk's Office, 1st Floor
Phone: (847) 377-3380
Hours: Mon–Fri, 8:30 AM–4:30 PM
Filing Fee: $300–$400
E-Filing: Required
Typical Timeline: 9–12 months
Will County Probate Court
Courthouse: Will County Courthouse
Address: 14 W. Jefferson St., Joliet, IL 60432
Floor/Room: Circuit Clerk's Office
Phone: (815) 727-8592
Hours: Mon–Fri, 8:30 AM–4:30 PM
Filing Fee: $350–$450
E-Filing: Required
Typical Timeline: 9–12 months
Kane County Probate Court
Courthouse: Kane County Judicial Center
Address: 37W777 IL-38, St. Charles, IL 60175
Floor/Room: Circuit Clerk's Office
Phone: (630) 232-3413
Hours: Mon–Fri, 8:30 AM–4:30 PM
Filing Fee: $250–$350
E-Filing: Required
Typical Timeline: 9–12 months
McHenry County Probate Court
Courthouse: McHenry County Courthouse
Address: 2200 N. Seminary Ave., Woodstock, IL 60098
Floor/Room: Room 136 (Clerk); Courtroom 202 (Probate Hearings)
Phone: (815) 334-4190
Hours: Mon–Fri, 8:30 AM–4:30 PM
Filing Fee: $300–$400
E-Filing: Required
Typical Timeline: 9–12 months
Important Notes
- Filing fees shown are estimates. Contact the Circuit Clerk directly for the current fee schedule before filing.
- All Illinois counties require mandatory e-filing for probate cases through the statewide eFileIL system. Original wills must be filed in person.
- The Illinois small estate affidavit threshold increased to $150,000 for decedents dying on or after August 15, 2025 (755 ILCS 5/25-1).
- All Illinois counties observe a mandatory 6-month creditor claims period following first publication of notice.
- Illinois courts generally require a licensed attorney to open a formal probate estate. Self-represented parties may handle small estate affidavits.
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