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Alton, IL Demographics & ZIP Codes
Alton, Illinois demographics and median household income by ZIP code (in Madison County) — 1 ZIP codes — population 30,036 — median income $57,851 — avg. home value $114,300. Compare income, housing, and population across ZIP codes on US5.
Population
30,036
Median household income (avg.)
$57,851
77% of U.S. median
Average home value
$114,300
33% of U.S. median
Average rent
$692
60% of U.S. median
Median age (avg.)
41.5
Alton demographics
Alton, Illinois covers 1 ZIP code primarily in Madison County, with a combined ZIP-area population of about 30,036.
Across ZIP codes with age data, the average median age is about 41.5 years.
Median household income in Alton
The average median household income across ZIP codes in Alton, Illinois is about $57,851 — about 26% below the IL ZIP average ($78,143), and about 23% below the U.S. median ($75,149).
The highest median household income among listed ZIPs is about $57,851 in 62002.
Housing in Alton
For housing in Alton, Illinois, the average median home value is about $114,300 and the average median rent is about $692.
The most populous ZIP in this set is 62002 (about 30,036 residents). Use the table below to compare population, income, and home values across codes.
ZIP codes in Alton
Sort by population, income, or home value. Click a column header to toggle ascending / descending.
| ZIP | City | County | State | Population ↓ | Income | Home value |
|---|---|---|---|---|---|---|
| 62002 | Alton | Madison County | IL | 30,036 | $57,851 | $114,300 |
Frequently asked questions
What are the demographics of Alton?
Alton, Illinois has a combined ZIP-area population of about 30,036 across 1 ZIP codes (primarily Madison County). Browse the ZIP table below for population, income, and housing by code.
What is the median household income in Alton?
The average median household income across ZIP codes in Alton, Illinois is about $57,851, about 26% below the state ZIP average ($78,143), and about 23% below the U.S. median ($75,149). Average median home value is about $114,300.
How many ZIP codes are in Alton?
Alton, 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 Alton?
This page lists ZIP codes in Alton, Illinois with population, median household income, and home value. Select a ZIP for a full demographics profile.