Welcome to Piatt County, Illinois
Map to Piatt County Courthouse
Courthouse Hours:
Monday thru Friday: 8:30 AM to 4:30 PM
Closed Saturdays, Sundays and Holidays
-
2025 Courthouse Holidays
The following are dates upon which holidays will be observed by County offices in the Courthouse:
Wednesday, January 1 New Year's Day Monday, January 20 Martin Luther King Jr. Day Wednesday, February 12 Lincoln's Birthday Monday, February 17 Presidents' Day Friday, April 18 Good Friday Monday, May 26 Memorial Day Thursday, June 19 Juneteenth Day Friday, July 4 Independence Day Monday, September 1 Labor Day Monday, October 13 Columbus/Indigenous Peoples' Day Tuesday, November 11 Veterans' Day Thursday, November 27 Thanksgiving Friday, November 28 Day Following Thanksgiving Wednesday, December 24 Christmas Eve Thursday, December 25 Christmas Holiday
Piatt County Facts
Piatt County, named for James A. Piatt, Sr., was established January 27, 1841, from territory taken from Macon County. The County is 34 miles long, containing 279,680 acres. Approximately 91% of this area is cropland, 3% pasture, 1% woodland and 5% other (municipalities, waterways, highways). Elevations vary from 650 to 800 feet above sea level.
The County Seat is Monticello. On July 1, 1837, James A. Piatt filed a plat of Monticello in the old Courthouse in Decatur. On July 4, 1837, a barbecue was held and lots were sold in the city named for the Virginia home of Thomas Jefferson.
(All information herein is presented for informational purposes only, and should not be relied upon as the basis for official or legal action. Information is subject to change without notice.)