Alton IL
576 active listings out of 24K total properties we track across 37 Alton ZIPs — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
While you're here, take in the bigger picture — maps below show Illinois (statewide), not just Alton. Same company, same dataset, different resolution.
Inventory breakdown
Distribution of the 576 currently-active listings in Alton, IL. Full dataset covers 24K properties — listings, off-market homes, rentals, and full history.
ZIP codes in Alton
Drill into any ZIP for hex-level breakdowns.
Nearby cities
Other Illinois cities within driving distance.
Get Alton, IL data in your app
GET https://api.straply.com/v1/markets/city/alton-il
Authorization: Bearer $STRAPLY_KEY{
"city": "alton-il",
"total_tracked": 24261,
"active": 576,
"median_list": 140000
}Alton, IL real estate: market summary
As of November 2026, Straply tracks 24,261 homes in Alton, IL, with 576 active for sale at a median list price of $140,000 (~$102/sq ft). Notably, it has notably historic housing — 30% of homes predate 1940.
- Median list price
- $140,000
- Median $/sq ft
- $102
- Active listings
- 576
- Median sale price
- $122,000 (-1% YoY)
- Properties tracked
- 24,261
Frequently asked: Alton, IL real estate
What is the median home price in Alton?
The median list price in Alton, IL is $140,000 (about $102 per square foot), based on 576 active listings tracked by Straply as of November 2026.
What price range are homes in Alton?
Active listings in Alton, IL concentrate in: 84% under $300k and 11% $300k–$500k.
Are home prices in Alton going up or down?
The median sale price is $122,000, down 1% year over year. Straply tracked 731 sales here over the past 12 months.
How many homes are for sale in Alton?
Straply is tracking 576 active listings in Alton, IL out of 24,261 properties on record as of November 2026.
How old are the homes in Alton?
Most homes in Alton, IL were built in the 1950s. About 17% were built after 1980, while 30% predate 1940. The newest tracked home dates to 2026.
What types of homes are in Alton?
Alton, IL is mostly single-family homes (83% of listings). Also common: lots / land 7%.
How many bedrooms do homes in Alton typically have?
The most common size in Alton, IL is 3 bd.
What are the most active ZIP codes in Alton?
The ZIP codes with the most active listings in Alton, IL are 62002, 61252, 60957, 62806, 61833.
What areas are near Alton?
Nearby markets Straply also tracks include Divernon, Auburn, Pawnee, Chatham.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.