Alton

Population

26,049 (2020)

Type

City

Area

15.67 sq mi (40.59 km²), 1.28 sq mi water

Median age

38.4

Households

13,777

Persons per household

2.3

Median household income

$43,406

Average house value

$92,600

Businesses

776

Employees

12,492

Government

CITY OF ALTON

Government office

101 E 3RD ST, ALTON, IL 62002