The United City of Yorkville Post Office is located at 601 East Countryside Parkway.
Post Office hours are:
Monday to Friday, 8 a.m. to 6 p.m.
Saturday from 9 a.m. to 3 p.m.
Sunday from 10 a.m. to 2 p.m.
For more information call 1-800-ASK-USPS (1-800-275-8777). To get a zip code, address, or to find out how to use direct mail and much more, visit the United States Postal Service website.