Peru, IL Profile: Facts & Data

Peru, Illinois - Basic Facts

The City of Peru had a population of 9,495 as of July 1, 2025.

The primary coordinate point for Peru is located at latitude 41.3275 and longitude -89.129 in LaSalle County. The formal boundaries for the City of Peru encompass a land area of 9.01 sq. miles and a water area of 0.11 sq. miles. LaSalle County is in the Central time zone (GMT -6).

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

Jump to... (On This Page!)

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

POPULATION
Total Population	9,495 (100%)
Population in Households	9,267 (97.6%)
Population in Families	6,739 (71.0%)
Population in Group Quarters¹	228 ( 2.4%)
Population Density	920
Diversity Index²	40


INCOME
Median Household Income	$70,355
Average Household Income	$95,015
% of Income for Mortgage⁴	18%
Per Capita Income	$44,096
Wealth Index⁵	84
Socioeconomic Status Index⁶	Moderate (52.6)

HOUSING
Total HU (Housing Units)	4,825 (100%)
Owner Occupied HU	3,184 (66.0%)
Renter Occupied HU	1,219 (25.3%)
Vacant Housing Units	422 ( 8.7%)
Median Home Value	$203,219
Average Home Value	$233,166
Housing Affordability Index³	109

HOUSEHOLDS
Total Households	4,403
Average Household Size	2.10
Family Households	2,478
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

4,825 (100%)

Owner Occupied HU

3,184 (66.0%)

Renter Occupied HU

1,219 (25.3%)

Vacant Housing Units

422 ( 8.7%)

Median Home Value

$203,219

Average Home Value

$233,166

Housing Affordability Index³

109

HOUSEHOLDS

Total Households

4,403

Average Household Size

2.10

Family Households

2,478

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	-0.58%	-0.39%
Households	0.17%	0.09%
Families		0.03%
Median Household Income		1.74%
Per Capita Income		1.61%
Owner Occupied HU		0.33%

GROWTH RATE / YEAR

2020-2025

2025-2030

Population

-0.58%

-0.39%

Households

0.17%

0.09%

Families

0.03%

Median Household Income

1.74%

Per Capita Income

1.61%

Owner Occupied HU

0.33%

Peru, IL - Peer Comparisons by Rank and Percentile

The table below compares Peru 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	# 227	85th
Population Density	# 738	50th
Median Household Income	# 881	40th
Housing Affordability Index	# 518	35th
Per Capita Income	# 505	66th
Diversity Index	# 390	73rd

Variable Description

Rank

Percentile

Total Population

# 227

85th

Population Density

# 738

50th

Median Household Income

# 881

40th

Housing Affordability Index

# 518

35th

Per Capita Income

# 505

66th

Diversity Index

# 390

73rd

Illinois Census Data Comparison Tool

Peru, IL Profile: Facts & Data

Peru, Illinois - Basic Facts

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

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Peru, IL - Peer Comparisons by Rank and Percentile

Peru, IL - Most Popular Things to Do

Use HTL Address Research for a Illinois Address and get...

Quick & Easy Ways to...

Illinois Census Data Comparison Tool

LaSalle County