ZIP codes
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Monmouth, IL Demographics & ZIP Codes
Monmouth, Illinois demographics and median household income by ZIP code (in Warren County) — 1 ZIP codes — population 10,640 — median income $62,190 — avg. home value $100,900. Compare income, housing, and population across ZIP codes on US5.
Population
10,640
Median household income (avg.)
$62,190
83% of U.S. median
Average home value
$100,900
29% of U.S. median
Average rent
$491
42% of U.S. median
Median age (avg.)
37.3
Monmouth demographics
Monmouth, Illinois covers 1 ZIP code primarily in Warren County, with a combined ZIP-area population of about 10,640.
Across ZIP codes with age data, the average median age is about 37.3 years.
Median household income in Monmouth
The average median household income across ZIP codes in Monmouth, Illinois is about $62,190 — about 20% below the IL ZIP average ($78,143), and about 17% below the U.S. median ($75,149).
The highest median household income among listed ZIPs is about $62,190 in 61462.
Housing in Monmouth
For housing in Monmouth, Illinois, the average median home value is about $100,900 and the average median rent is about $491.
The most populous ZIP in this set is 61462 (about 10,640 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in Monmouth
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 61462 | Monmouth | Warren County | IL | 10,640 | $62,190 | $100,900 |
Frequently asked questions
What are the demographics of Monmouth?
Monmouth, Illinois has a combined ZIP-area population of about 10,640 across 1 ZIP codes (primarily Warren County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in Monmouth?
The average median household income across ZIP codes in Monmouth, Illinois is about $62,190, about 20% below the state ZIP average ($78,143), and about 17% below the U.S. median ($75,149). Average median home value is about $100,900.
How many ZIP codes are in Monmouth?
Monmouth, Illinois includes 1 ZIP codes on US5. Each row links to demographics, median income, and housing for that code.
Where can I find ZIP code demographics for Monmouth?
This page lists ZIP codes in Monmouth, Illinois with population, median household income, and home value. Select a ZIP for a full demographics profile.