Timberlane, IL Profile: Facts & Data

Timberlane, Illinois - Basic Facts

The Village of Timberlane had a population of 866 as of July 1, 2025.

The primary coordinate point for Timberlane is located at latitude 42.3347 and longitude -88.8612 in Boone County. The formal boundaries for the Village of Timberlane encompass a land area of 1.76 sq. miles and a water area of 0.02 sq. miles. Boone County is in the Central time zone (GMT -6).

The Village of Timberlane 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 Village of Timberlane is located within Township of Poplar Grove, a minor civil division (MCD) of Boone County.

Jump to... (On This Page!)

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

POPULATION
Total Population	866 (100%)
Population in Households	866 (100.0%)
Population in Families	822 (94.9%)
Population in Group Quarters¹	0
Population Density	496
Diversity Index²	39


INCOME
Median Household Income	$161,741
Average Household Income	$181,354
% of Income for Mortgage⁴	13%
Per Capita Income	$62,825
Wealth Index⁵	199
Socioeconomic Status Index⁶	High (71.7)

HOUSING
Total HU (Housing Units)	306 (100%)
Owner Occupied HU	295 (96.4%)
Renter Occupied HU	5 ( 1.6%)
Vacant Housing Units	6 ( 2.0%)
Median Home Value	$336,321
Average Home Value	$372,153
Housing Affordability Index³	153

HOUSEHOLDS
Total Households	300
Average Household Size	2.89
Family Households	275
Average Family Size	3.00

HOUSING

Total HU (Housing Units)

306 (100%)

Owner Occupied HU

295 (96.4%)

Renter Occupied HU

5 ( 1.6%)

Vacant Housing Units

6 ( 2.0%)

Median Home Value

$336,321

Average Home Value

$372,153

Housing Affordability Index³

153

HOUSEHOLDS

Total Households

300

Average Household Size

2.89

Family Households

275

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	-0.86%	-0.42%
Households	0.19%	0.33%
Families		-0.07%
Median Household Income		2.39%
Per Capita Income		2.38%
Owner Occupied HU		0.27%

GROWTH RATE / YEAR

2020-2025

2025-2030

Population

-0.86%

-0.42%

Households

0.19%

0.33%

Families

-0.07%

Median Household Income

2.39%

Per Capita Income

2.38%

Owner Occupied HU

0.27%

Timberlane, IL - Peer Comparisons by Rank and Percentile

The table below compares Timberlane 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	# 725	51st
Population Density	# 1077	26th
Median Household Income	# 33	98th
Housing Affordability Index	# 1002	69th
Per Capita Income	# 102	93rd
Diversity Index	# 400	73rd

Variable Description

Rank

Percentile

Total Population

# 725

51st

Population Density

# 1077

26th

Median Household Income

# 33

98th

Housing Affordability Index

# 1002

69th

Per Capita Income

# 102

93rd

Diversity Index

# 400

73rd

Illinois Census Data Comparison Tool

Timberlane, IL Profile: Facts & Data

Timberlane, Illinois - Basic Facts

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

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Timberlane, IL - Peer Comparisons by Rank and Percentile

Timberlane, 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

Boone County