Forest Lake, IL Profile: Facts, Map & Data


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Forest Lake, Illinois - Basic Facts

The Forest Lake Census Designated Place had a population of 1,498 as of July 1, 2017. Forest Lake ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Forest Lake is located at latitude 42.2109 and longitude -88.0536 in Lake County. The formal boundaries for the Forest Lake Census Designated Place (see map below) encompass a land area of 0.34 sq. miles and a water area of 0.06 sq. miles. Lake County is in the Central time zone (GMT -6). The elevation is 820 feet.

The Forest Lake Census Designated Place (GNIS ID: 2393000) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Forest Lake Census Designated Place is located within Township of Ela, a minor civil division (MCD) of Lake County.

Beneath the boundary map are tables with Forest Lake population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

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Forest Lake Census Designated Place, IL Boundary Map

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Boundary Maps: Township of Ela | Lake County | Illinois Counties

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Forest Lake, IL Data & Demographics (As of July 1, 2017)


Total Population 1,498
Daytime Population: Workers 105
Daytime Population: Residents 646
Total Daytime Population (TDP) 751
Ratio TDP/Total Population1 0.50
Population in Households 1,498
Population in Familes 1,343
Population in Group Qrtrs 0
Population Density2 4,465
Diversity Index3 35


Median Household Income $104,996
Average Household Income $134,137
Per Capita Income $48,417


Total Housing Units 618 (100%)
Owner Occupied HU 524 (84.8%)
Renter Occupied HU 54 ( 8.7%)
Vacant Housing Units 39 ( 6.3%)
Median Home Value $341,379
Average Home Value $375,811


Total Households 579
Average Household Size 2.59
Family Households 462
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population -0.51% 1.34%
Households -0.21% 1.38%
Families 0.36% 1.39%
Median Household Income   0.85%
Per Capita Income   1.82%

Forest Lake, IL - Peer Comparisons by Rank and Percentile

The table below compares Forest Lake to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2017 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 # 586 57th
Population Density # 62 96th
Diversity Index # 299 78th
Median Household Income # 58 96th
Per Capita Income # 58 96th

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.

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