Cost of Living in Seneca, IL
Cost indexes, living wages, and fair market rents — 2024 Data
Cost of Living Overview
Overall Index
122.7
100 = national avg
+22.7 vs national average
Living Wage (1 Adult)
$53,971
per year
Living Wage (Family of 4)
$127,568
per year
Cost Index by Category
Housing114.1
Food119.6
Transportation139.2
Healthcare115.7
Utilities114.6
100 = national average. Higher = more expensive.
Fair Market Rent
Source: HUD1 Bedroom
$822
per month
2 Bedroom
$1,079
per month
The overall cost of living index in Seneca is 122.7, which is 22.7% above the national average. Housing costs are above the national average at an index of 114.1. A single adult needs to earn approximately $53,971 per year to cover basic expenses.