ZIP codes
12
Williamson County, IL Demographics & ZIP Codes
Williamson County, Illinois demographics and median household income by ZIP code — 12 ZIP codes — population 67,639 — avg. income $56,187 — avg. home value $122,967. Compare income, housing, and ZIP-level data on US5.
Population
67,639
Median household income (avg.)
$56,187
75% of U.S. median
Average home value
$122,967
35% of U.S. median
Average rent
$625
54% of U.S. median
Williamson County demographics
Williamson County, Illinois covers 12 ZIP codes, with a combined ZIP-area population of about 67,639.
Median household income in Williamson County
The average median household income across ZIP codes in Williamson County, Illinois is about $56,187 — about 28% below the IL ZIP average ($78,143), and about 25% below the U.S. median ($75,149).
Among ZIPs with income data, 62902 (Carbondale) is near the top at about $75,313, while 62915 (Cambria) is near the bottom at about $31,111.
Housing in Williamson County
For housing in Williamson County, Illinois, the average median home value is about $122,967 and the average median rent is about $625.
The most populous ZIP is 62959 (Marion) with about 27,779 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Williamson County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 62959 | Marion | Williamson County | IL | 27,779 | $69,914 | $166,200 |
| 62948 | Herrin | Williamson County | IL | 12,728 | $59,031 | $112,400 |
| 62918 | Carterville | Williamson County | IL | 10,521 | $70,975 | $183,200 |
| 62951 | Johnston City | Williamson County | IL | 5,381 | $49,694 | $89,600 |
| 62902 | Carbondale | Williamson County | IL | 4,217 | $75,313 | $184,300 |
| 62922 | Creal Springs | Williamson County | IL | 2,697 | $70,547 | $149,400 |
| 62974 | Pittsburg | Williamson County | IL | 1,648 | $73,571 | $161,600 |
| 62933 | Energy | Williamson County | IL | 1,188 | $69,896 | $138,500 |
| 62949 | Hurst | Williamson County | IL | 699 | $34,194 | $74,300 |
| 62915 | Cambria | Williamson County | IL | 473 | $31,111 | $77,500 |
| 62921 | Colp | Williamson County | IL | 200 | $36,250 | $75,000 |
| 62841 | Freeman Spur | Williamson County | IL | 108 | $33,750 | $63,600 |
Frequently asked questions
What are the demographics of Williamson County?
Williamson County, Illinois has a combined ZIP-area population of about 67,639 across 12 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Williamson County?
The average median household income across ZIP codes in Williamson County, Illinois is about $56,187, about 28% below the state ZIP average ($78,143), and about 25% below the U.S. median ($75,149). Average median home value is about $122,967. Among ZIPs with data, 62902 (Carbondale) is near the top ($75,313) and 62915 (Cambria) is near the bottom ($31,111).
How many ZIP codes are in Williamson County?
Williamson County, Illinois includes 12 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Williamson County?
This page lists ZIP codes in Williamson County, Illinois with population, median household income, and home value. Select a ZIP for a full demographics profile.