Courthouse Hours:
Monday thru Friday: 8:30 AM to 4:30 PM
Closed Saturdays, Sundays and Holidays
2026 Courthouse Holidays
The following are dates upon which holidays will be observed by County offices in the Courthouse:
| Thursday, January 1 | New Year's Day |
| Monday, January 19 | Martin Luther King Jr. Day |
| Thursday, February 12 | Lincoln's Birthday |
| Monday, February 16 | Presidents' Day |
| Friday, April 3 | Good Friday |
| Monday, May 25 | Memorial Day |
| Friday, June 19 | Juneteenth Day |
| Friday, July 3 | Independence Day |
| Monday, September 7 | Labor Day |
| Monday, October 12 | Columbus/Indigenous Peoples' Day |
| Tuesday, November 3 | General Election Day |
| Wednesday, November 11 | Veterans' Day |
| Thursday, November 26 | Thanksgiving |
| Friday, November 27 | Day Following Thanksgiving |
| Thursday, December 24 | Christmas Eve |
| Friday, 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.)