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zipcodes.pro — CITY/IL/ALTON

Alton ZIP code, Illinois

The ZIP code for Alton, IL is 62002, and its area codes are 618 and 730.

USPS city name
1 ZIP code
Overlapping the city
4 more
Population
25,279
Area codes
618, 730

Mail addressed to Alton uses the ZIP code above. 4 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Alton in numbers

About 25,279 people live in Alton, in 10,714 households. The median household income is $54,568 a year, 35% below the Illinois median of $83,390 (US: $80,734). The median owner-occupied home is valued at $103,700 (61% below the Illinois median), and median gross rent is $1,015 a month. The median age is 38.0; 21.5% of adults 25 and over hold a bachelor's degree or higher (37.8% across Illinois); the average commute takes 23 minutes.

Population25,279Alton25,279
Households10,714Alton10,714
Median age38.0Alton38.0Illinois39.0US 38.9
Median household income$54,568Alton$54,568Illinois$83,390US $80,734
Median home value$103,700Alton$103,700Illinois$263,300US $332,700
Median gross rent$1,015Alton$1,015Illinois$1,274US $1,413
Bachelor's degree or higher21.5%Alton21.5%Illinois37.8%US 35.7%
Mean commute22.7 minAlton22.7 minIllinois27.8 minUS 26.4 min
Population density1,613 / sq miAlton1,613 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Alton city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Alton

ZIP codes with the USPS city name Alton
ZIP City Type Population Median income Median home
62002 Alton , IL Standard 29,543 $61,414 $118,900

Other ZIP codes overlapping Alton

These ZIP codes cover part of Alton but are addressed as somewhere else.

ZIP codes overlapping Alton
ZIP City Type Population Median income Median home
62010 Bethalto , IL Standard 11,028 $71,408 $183,400
62018 Cottage Hills , IL Standard 3,184 $40,438 $70,200
62024 East Alton , IL Standard 9,493 $56,761 $126,500
62035 Godfrey , IL Standard 15,892 $93,973 $182,000

Map of Alton ZIP codes

62002

The ZIP codes of Alton, IL, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Alton

The nearest larger towns are Edwardsville (26,474 people, 12 mi), Florissant, MO (51,773 people, 12 mi) and Granite City (26,549 people, 12 mi).

Towns near Alton
TownPopulationDistance
East Alton 5,689 2.7 mi
Rosewood Heights 4,229 4.3 mi
Wood River 10,279 4.9 mi
Godfrey 17,712 5.1 mi
Bethalto 9,239 5.7 mi
Spanish Lake, MO 17,873 8.5 mi
Old Jamestown, MO 20,651 8.6 mi
Black Jack, MO 6,589 9.4 mi
Glasgow Village, MO 5,504 10.4 mi
Bellefontaine Neighbors, MO 10,498 11.2 mi
Riverview, MO 2,731 11.5 mi
Holiday Shores 2,782 11.5 mi
Edwardsville 26,474 11.7 mi
Florissant, MO 51,773 11.9 mi

More nearby: every ZIP code in Madison County · Illinois ZIP codes

Cite this page

zipcodes.pro. “Alton, IL ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/il/alton

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