Median Age
40 Years
Largest Age Group
20-29 Years
Approximately 13% of Residents
Under 20
25%
Over 65
21%
Avg Rent
$728
Population
69,099
Renter Mix
42% Rent
Decatur is central Illinois' lakeside city where an honest, affordable lifestyle meets genuine small-town character. The 2,800-acre Lake Decatur anchors daily life here, giving residents easy access to waterfront recreation, scenic parks, and a calendar packed with outdoor events. Merchant Street's string-lit downtown block and the surrounding neighborhoods offer dining and shopping, while Interstate 72 connects the city to Springfield, Bloomington-Normal, and Champaign, each about an hour away. Popular areas like the historic West End and the lakefront South Shores neighborhood each carry their own personality and appeal.
The rental market leans heavily toward traditional apartment communities, single-family homes, and townhomes, with West End bungalows and brick houses built in the 1920s and 1930s reflecting real architectural character. Lakefront properties in South Shores sit alongside more conventional suburban housing stock, and the overall supply keeps options accessible across a range of sizes and layouts.
Millikin University and Richland Community College both call Decatur home. Major employers including ADM, Caterpillar, Tate and Lyle, and Memorial Health anchor the local economy. The city once earned the title 'The Soybean Capital of the World,' and it is also the original home of the football team that eventually became the Chicago Bears.
The Country Club of Decatur is a highlight for residents seeking recreation.
Staley Basin is a scenic place to walk, especially at sunset.
Lake Decatur is a boater's paradise.
Catch the latest blockbuster movie at the historic Avon theater in Downtown Decatur.
Multiple lakeside restaurants are nearby.
Decatur wraps around its namesake lake.
Median Household Income
$42,212
Average: $59,338
Education
12,640
Residents Have a Degree
Job Market
29,101
Workers Employed
Median Age
40 Years
Largest Age Group
20-29 Years
Approximately 13% of Residents
Under 20
25%
Over 65
21%
Housing Distribution
Decatur has more homeowners than renters.
Education Distribution
Review this city's overall education levels.
As of September 2026, the average apartment rent in Decatur, IL is $562 for a studio, $728 for one bedroom, $903 for two bedrooms, and $1,172 for three bedrooms. Apartment rent in Decatur has increased by 3.5% in the past year.
The cost of living in Decatur, IL is 19.8% lower than the national average. Generally, housing in Decatur is 49.5% less expensive than the national average, with rent falling between $562 - $1,172. You can expect to pay 2.3% less for groceries, 5.6% more for utilities, and 5.7% less for transportation.
Compare Cities
Explore how walkable, bikeable, drivable, and transit-friendly Decatur, IL is for everyday living.
Fairly Walkable
Walkability
Exceptionally Drivable
Drivability
Fairly Bikeable
Bikeability
Public
Grades K-8
628 Students
Public
Grades PK-8
609 Students
South Shores Elementary School
Public
Grades K-5
322 Students
Public
Grades PK-8
315 Students
Public
Grades K-5
373 Students
Public
Grades K-8
628 Students
Public
Grades PK-8
609 Students
Public
Grades PK-8
315 Students
Public
Grades K-8
556 Students
Public
Grades K-8
519 Students
Public
Grades 9-12
1,012 Students
Public
Grades 9-12
860 Students
Public
Grades PK-12
2 Students
Public
Grades 9-12
Public
Grades 9-12
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© 2026. All rights reserved.
† Our analysis of utilities, groceries, transportation, healthcare, home prices, and other goods and services is sourced from the Cost of Living Index, a respected benchmark published by the Council for Community and Economic Research (C2ER) that provides a thorough overview of living expenses across different regions.
Rent data is provided by CoStar Group’s Market Trend reports. As the industry leader in commercial real estate information, analytics, and news, CoStar conducts extensive research to produce and maintain a comprehensive database of commercial real estate information. We combine this data with public record to provide the most up-to-date rental information available.
Consumer goods, services, and home prices are sourced from the Cost of Living Index published by the Council for Community and Economic Research (C2ER). The data on this page is updated quarterly. It was last published in September 2026.
Demographic information comes from Neustar and combines detailed address data with U.S. Census and American Community Survey statistics to produce reliable local estimates.