Princeton, IL Profile: Facts & Data

Princeton, Illinois - Basic Facts

The City of Princeton had a population of 7,677 as of July 1, 2025.

The primary coordinate point for Princeton is located at latitude 41.3681 and longitude -89.4648 in Bureau County. The formal boundaries for the City of Princeton encompass a land area of 7.49 sq. miles and a water area of 0 sq. miles. Bureau County is in the Central time zone (GMT -6).

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

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Princeton, IL Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	7,677 (100%)
Population in Households	7,444 (97.0%)
Population in Families	5,415 (70.5%)
Population in Group Quarters¹	233 ( 3.0%)
Population Density	932
Diversity Index²	27


INCOME
Median Household Income	$61,344
Average Household Income	$83,963
% of Income for Mortgage⁴	16%
Per Capita Income	$38,602
Wealth Index⁵	68
Socioeconomic Status Index⁶	Moderate (50.4)

HOUSING
Total HU (Housing Units)	3,815 (100%)
Owner Occupied HU	2,513 (65.9%)
Renter Occupied HU	1,012 (26.5%)
Vacant Housing Units	290 ( 7.6%)
Median Home Value	$151,657
Average Home Value	$171,663
Housing Affordability Index³	130

HOUSEHOLDS
Total Households	3,525
Average Household Size	2.11
Family Households	1,914
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

3,815 (100%)

Owner Occupied HU

2,513 (65.9%)

Renter Occupied HU

1,012 (26.5%)

Vacant Housing Units

290 ( 7.6%)

Median Home Value

$151,657

Average Home Value

$171,663

Housing Affordability Index³

130

HOUSEHOLDS

Total Households

3,525

Average Household Size

2.11

Family Households

1,914

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	2020-2025	2025-2030
Population	-0.38%	-0.43%
Households	-0.04%	-0.09%
Families		-0.20%
Median Household Income		1.71%
Per Capita Income		1.73%
Owner Occupied HU		0.36%

GROWTH RATE / YEAR

2020-2025

2025-2030

Population

-0.38%

-0.43%

Households

-0.04%

-0.09%

Families

-0.20%

Median Household Income

1.71%

Per Capita Income

1.73%

Owner Occupied HU

0.36%

Princeton, IL - Peer Comparisons by Rank and Percentile

The table below compares Princeton to the other 1,461 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2025 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	# 270	82nd
Population Density	# 733	50th
Median Household Income	# 1124	23rd
Housing Affordability Index	# 773	53rd
Per Capita Income	# 772	47th
Diversity Index	# 581	60th

Variable Description

Rank

Percentile

Total Population

# 270

82nd

Population Density

# 733

50th

Median Household Income

# 1124

23rd

Housing Affordability Index

# 773

53rd

Per Capita Income

# 772

47th

Diversity Index

# 581

60th

Illinois Census Data Comparison Tool

Princeton, IL Profile: Facts & Data

Princeton, Illinois - Basic Facts

Princeton, IL Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Princeton, IL - Peer Comparisons by Rank and Percentile

Princeton, IL - Most Popular Things to Do

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