ZIP codes
7
Clark County, IL Demographics & ZIP Codes
Clark County, Illinois demographics and median household income by ZIP code — 7 ZIP codes — population 16,154 — avg. income $69,915 — avg. home value $123,357. Compare income, housing, and ZIP-level data on US5.
Population
16,154
Median household income (avg.)
$69,915
93% of U.S. median
Average home value
$123,357
35% of U.S. median
Average rent
$570
49% of U.S. median
Clark County demographics
Clark County, Illinois covers 7 ZIP codes, with a combined ZIP-area population of about 16,154.
Median household income in Clark County
The average median household income across ZIP codes in Clark County, Illinois is about $69,915 — about 11% below the IL ZIP average ($78,143), and about 7% below the U.S. median ($75,149).
Among ZIPs with income data, 62478 (West York) is near the top at about $88,846, while 62477 (West Union) is near the bottom at about $52,330.
Housing in Clark County
For housing in Clark County, Illinois, the average median home value is about $123,357 and the average median rent is about $570.
The most populous ZIP is 62441 (Marshall) with about 6,841 residents. Use the table below to compare ZIP codes across the county.
ZIP codes in Clark County
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 62441 | Marshall | Clark County | IL | 6,841 | $80,218 | $139,800 |
| 62420 | Casey | Clark County | IL | 4,361 | $68,235 | $122,000 |
| 62442 | Martinsville | Clark County | IL | 2,629 | $65,000 | $84,900 |
| 62477 | West Union | Clark County | IL | 755 | $52,330 | $152,100 |
| 62474 | Westfield | Clark County | IL | 651 | $64,861 | $84,700 |
| 62423 | — | Clark County | IL | 609 | — | $147,900 |
| 62478 | West York | Clark County | IL | 308 | $88,846 | $132,100 |
Frequently asked questions
What are the demographics of Clark County?
Clark County, Illinois has a combined ZIP-area population of about 16,154 across 7 ZIP codes. Browse the ZIP table for population, income, and housing by code.
What is the median household income in Clark County?
The average median household income across ZIP codes in Clark County, Illinois is about $69,915, about 11% below the state ZIP average ($78,143), and about 7% below the U.S. median ($75,149). Average median home value is about $123,357. Among ZIPs with data, 62478 (West York) is near the top ($88,846) and 62477 (West Union) is near the bottom ($52,330).
How many ZIP codes are in Clark County?
Clark County, Illinois includes 7 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Clark County?
This page lists ZIP codes in Clark County, Illinois with population, median household income, and home value. Select a ZIP for a full demographics profile.