Williamson County ZIP Codes

List of ZIP Codes in Williamson County

The following table lists ZIP Codes associated with Williamson County, Illinois, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.

S.N.	Zip Code	Latitude	Longitude	City	Population	Density
1	62841	37.8588	-88.99639	Freeman Spur	108	136.6
2	62902	37.67199	-89.11509	Carbondale	4,217	25.3
3	62915	37.78413	-89.12238	Cambria	473	575.6
4	62918	37.78561	-89.08641	Carterville	10,521	108.3
5	62921	37.80217	-89.08215	Colp	200	144.2
6	62922	37.6215	-88.81531	Creal Springs	2,697	16.5
7	62933	37.77363	-89.02003	Energy	1,188	190.2
8	62948	37.8204	-89.02542	Herrin	12,728	245.2
9	62949	37.8278	-89.14409	Hurst	699	161.4
10	62951	37.82637	-88.92609	Johnston City	5,381	75.1
11	62959	37.71442	-88.91463	Marion	27,779	75.0
12	62974	37.78158	-88.79094	Pittsburg	1,648	24.6

About Williamson County ZIP Codes

Williamson County in Illinois (IL) is served by approximately 12 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 67,639 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in Williamson County are located in cities such as Marion, Herrin, Carterville, Johnston City, Carbondale. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in Williamson County, Illinois follow the America/Chicago time zone.

Williamson County ZIP Codes

List of ZIP Codes in Williamson County

About Williamson County ZIP Codes

Illinois Counties ZIP Codes

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