Johnston City, IL ZIP Codes, Coordinates & Counties
Johnston City, Illinois has 1 ZIP code in Williamson county. The approximate center of Johnston City is 37.824, -88.929. Johnston City has about 51,051 known street addresses.
ZIP codes in Johnston City, IL
| ZIP Code | County | Latitude | Longitude |
|---|---|---|---|
| 62951 | Williamson | 37.824 | -88.929 |
Counties Johnston City spans
Williamson
Most common streets in Johnston City
Monroe, 9th, Broadway, Grand, 10th, 8th, 4th, 5th, Collins, Jefferson
Frequently asked questions
What ZIP codes are in Johnston City, IL?
Johnston City, Illinois has 1 ZIP code, ranging from 62951 to 62951. The full list, with each ZIP's county and coordinates, is in the table on this page.
What county is Johnston City, IL in?
Johnston City is in Williamson county.
What are the latitude and longitude of Johnston City, IL?
The approximate center of Johnston City, Illinois is latitude 37.824, longitude -88.929. Coordinates for each ZIP code are listed in the table above.
How many ZIP codes does Johnston City, IL have?
Johnston City has 1 ZIP code.
How many addresses are in Johnston City, IL?
Johnston City, Illinois has about 51,051 known street addresses in the sthan.io US address database.
What are the most common streets in Johnston City, IL?
Some of the most common street names in Johnston City are Monroe, 9th, Broadway, Grand, 10th, 8th.
What cities are near Johnston City, IL?
Cities near Johnston City include Freeman Spur (5 mi), West Frankfort (5 mi), Energy (6 mi), Herrin (6 mi), Marion (7 mi).
Cities near Johnston City
Freeman Spur, IL (5 mi) West Frankfort, IL (5 mi) Energy, IL (6 mi) Herrin, IL (6 mi) Marion, IL (7 mi) Orient, IL (7 mi) Zeigler, IL (8 mi) Carterville, IL (9 mi)
Need this for any US address, in code?
Get the ZIP code, county, and coordinates for any US address through the sthan.io API. Free 100 requests/month, no credit card required.
View the API →Last updated: June 2026 · Data: sthan.io US address database