Median Age
43 Years
Largest Age Group
60-69 Years
Approximately 14% of Residents
Under 20
22%
Over 65
22%
Avg Rent
$734
Population
18,841
Renter Mix
35% Rent
Ottawa, Illinois sits at the meeting point of the Fox River and the Illinois River, and that geography has shaped just about everything here. The city is the seat of LaSalle County, roughly 90 miles southwest of Chicago, and covers about 15 square miles along both banks of the Illinois River. Daily life here moves at a comfortable pace, with a walkable downtown core, river access, a mix of local dining and retail, and quick entry to some of northern Illinois's most scenic natural areas. Illinois Valley Community College serves the broader region and has a branch campus in Ottawa, adding an educational presence to the community. Neighborhoods north of the river tend to feature tree-lined streets with single-family homes and older residential architecture, while areas closer to downtown offer rental options ranging from upper-floor units in historic commercial buildings to garden apartments and small-scale mid-rises along main corridors. Downtown's Washington Park marks the site of the first Lincoln-Douglas debate of 1858, one of the community's defining points of historical pride.
Median Household Income
$66,220
Average: $81,032
Education
3,930
Residents Have a Degree
Job Market
9,317
Workers Employed
Median Age
43 Years
Largest Age Group
60-69 Years
Approximately 14% of Residents
Under 20
22%
Over 65
22%
Housing Distribution
Ottawa has more homeowners than renters.
Education Distribution
Review this city's overall education levels.
As of July 2026, the average apartment rent in Ottawa, IL is $825 for a studio, $734 for one bedroom, $1,049 for two bedrooms, and $1,678 for three bedrooms. Apartment rent in Ottawa has increased by 4.3% in the past year.
Explore how walkable, bikeable, drivable, and transit-friendly Ottawa, IL is for everyday living.
Somewhat Walkable
Walkability
Exceptionally Drivable
Drivability
Fairly Bikeable
Bikeability
Deer Park Child Care Elementary School
Public
Grades PK-8
40 Students
Public
Grades PK-8
425 Students
Public
Grades PK-8
65 Students
Public
Grades PK-5
446 Students
Public
Grades PK-5
343 Students
Deer Park Child Care Elementary School
Public
Grades PK-8
40 Students
Public
Grades PK-8
425 Students
Public
Grades PK-8
65 Students
Public
Grades 6-8
345 Students
Public
Grades 9-12
1,193 Students
The GreatSchools Rating helps parents compare schools within a state based on a variety of school quality indicators and provides a helpful picture of how effectively each school serves all of its students. Ratings are on a scale of 1 (below average) to 10 (above average) and can include test scores, college readiness, academic progress, advanced courses, equity, discipline and attendance data. We also advise parents to visit schools, consider other information on school performance and programs, and consider family needs as part of the school selection process.
View GreatSchools Rating Methodology
Data provided by
GreatSchools.org
© 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 June 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.