Based on information submitted to the MLS GRID as of 2026-09-03 18:12:50 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
June 2026
Homes that sold · County records, as of Jun 23, 2026
Median sale price
$158,000$85,250–$298,500 typical range
Price per sq. ft.
$136
Sales
63
Paid in cash
47.6%
Homes on the market · MLS, as of Jun 30, 2026
Median days on market
43 days
Price trend · Assessor repeat sales, as of Jun 30, 2026
25
