Based on information submitted to the MLS GRID as of 2026-09-16 15:53:33 UTC. All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.
Alton, IL community profile
Population
25,443
Median income
$54,577
Housing units
12,325
People per sq. mi.
650.7
Area
39.1 sq. mi.
Source: HJN community data
Alton housing market
August 2026 · This period is still settling
Homes that sold · County records, as of Aug 21, 2026
Median sale price
$99,750$40,000–$161,250 typical range
Price per sq. ft.
$140
Sales
38
Paid in cash
42.1%
Homes on the market · MLS, as of Aug 31, 2026
Median days on market
45 days
Price trend · Assessor repeat sales, as of Aug 31, 2026
28
