Cost of living index
Decatur, IL
88.4 / 100
Living in Decatur, IL is 11.6% cheaper than the US average.
Overall prices
88.4
Housing / rent
56.2
vs US average
−11.6%
What it costs to live in Decatur, IL
Decatur, IL has an overall price level of 88.4 compared with the national average of 100, meaning everyday costs run about 11.6% lower than a typical US metro. Housing tells the sharper story: at 56.2 it is 43.8% below the national average. Because rent and mortgage payments are the biggest line in most household budgets, that housing figure is usually what you’ll feel most when you move here.
Common questions
Is Decatur, IL an expensive place to live?
Decatur, IL has an overall cost-of-living index of 88.4, where 100 is the US average. That makes it about 11.6% cheaper than the country as a whole.
Is housing expensive in Decatur, IL?
Housing in Decatur, IL scores 56.2 against a US average of 100 — roughly 43.8% below average. Housing is usually the largest single cost, so it drives most of the overall difference.
How does Decatur, IL compare to the US average cost of living?
Overall prices in Decatur, IL sit at 88.4 versus 100 for the US average, with housing at 56.2. Figures come from the US Bureau of Economic Analysis for 2024.