Homes for Sale in Seneca, IL

5 homes for sale · Updated October 23, 2026

Market snapshot for Seneca, IL

Median price
$265,000
Average price
$266,580
Highest price
$299,000
Avg price / sqft
$165/sqft
Avg home size
1,624 sqft
Avg days on market
23
Avg year built
1968
Avg beds / baths
2.8 bd / 2.2 ba

All homes for sale in Seneca