Ottawa, IL Profile: Facts & Data

Ottawa, Illinois - Basic Facts

The City of Ottawa had a population of 18,621 as of July 1, 2024.

The primary coordinate point for Ottawa is located at latitude 41.3456 and longitude -88.8426 in LaSalle County. The formal boundaries for the City of Ottawa encompass a land area of 11.95 sq. miles and a water area of 0.8 sq. miles. LaSalle County is in the Central time zone (GMT -6).

The City of Ottawa has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Ottawa is located within Township of Ottawa, a minor civil division (MCD) of LaSalle County.

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Ottawa, IL Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	18,621 (100%)
Population in Households	18,198 (97.7%)
Population in Families	13,500 (72.5%)
Population in Group Quarters¹	423 ( 2.3%)
Population Density	1,250
Diversity Index²	39


INCOME
Median Household Income	$63,461
Average Household Income	$85,257
% of Income for Mortgage⁴	17%
Per Capita Income	$37,261
Wealth Index⁵	74
Socioeconomic Status Index⁶	Moderate (48.2)

HOUSING
Total HU (Housing Units)	9,026 (100%)
Owner Occupied HU	5,421 (60.1%)
Renter Occupied HU	2,710 (30.0%)
Vacant Housing Units	895 ( 9.9%)
Median Home Value	$168,017
Average Home Value	$194,899
Housing Affordability Index³	128

HOUSEHOLDS
Total Households	8,131
Average Household Size	2.24
Family Households	4,634
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

9,026 (100%)

Owner Occupied HU

5,421 (60.1%)

Renter Occupied HU

2,710 (30.0%)

Vacant Housing Units

895 ( 9.9%)

Median Home Value

$168,017

Average Home Value

$194,899

Housing Affordability Index³

128

HOUSEHOLDS

Total Households

8,131

Average Household Size

2.24

Family Households

4,634

Average Family Size

3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	-0.26%	-0.35%
Households	-0.20%	0.01%
Families		-0.19%
Median Household Income		3.60%
Per Capita Income		2.90%
Owner Occupied HU		0.56%

GROWTH RATE / YEAR

2020-2024

2024-2029

Population

-0.26%

-0.35%

Households

-0.20%

0.01%

Families

-0.19%

Median Household Income

3.60%

Per Capita Income

2.90%

Owner Occupied HU

0.56%

Ottawa, IL - Peer Comparisons by Rank and Percentile

The table below compares Ottawa to the other 1,462 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description	Rank	Percentile
Total Population	# 130	91st
Population Density	# 538	63rd
Median Household Income	# 944	35th
Housing Affordability Index	# 657	45th
Per Capita Income	# 797	46th
Diversity Index	# 394	73rd

Variable Description

Rank

Percentile

Total Population

# 130

91st

Population Density

# 538

63rd

Median Household Income

# 944

35th

Housing Affordability Index

# 657

45th

Per Capita Income

# 797

46th

Diversity Index

# 394

73rd

Illinois Census Data Comparison Tool

Ottawa, IL Profile: Facts & Data

Ottawa, Illinois - Basic Facts

Ottawa, IL Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Ottawa, IL - Peer Comparisons by Rank and Percentile

Ottawa, IL - Most Popular Things to Do

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LaSalle County