Third Lake, IL Profile: Facts, Map & Data


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Third Lake, Illinois - Basic Facts

The Village of Third Lake had a population of 1,144 as of July 1, 2017. Third 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 Third Lake is located at latitude 42.3698 and longitude -88.0091 in Lake County. The formal boundaries for the Village of Third Lake (see map below) encompass a land area of 0.59 sq. miles and a water area of 0.26 sq. miles. Lake County is in the Central time zone (GMT -6). The elevation is 774 feet.

The Village of Third Lake (GNIS ID: 2399970) 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 Third Lake is located within Township of Avon, a minor civil division (MCD) of Lake County.

Beneath the boundary map are tables with Third 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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Village of Third Lake, IL Boundary Map

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

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


Total Population 1,144
Daytime Population: Workers 446
Daytime Population: Residents 479
Total Daytime Population (TDP) 925
Ratio TDP/Total Population1 0.81
Population in Households 1,139
Population in Familes 1,048
Population in Group Qrtrs 5
Population Density2 1,945
Diversity Index3 40


Median Household Income $121,419
Average Household Income $144,573
Per Capita Income $48,451


Total Housing Units 420 (100%)
Owner Occupied HU 357 (85.0%)
Renter Occupied HU 34 ( 8.1%)
Vacant Housing Units 29 ( 6.9%)
Median Home Value $271,354
Average Home Value $306,844


Total Households 391
Average Household Size 2.91
Family Households 325
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 -0.45% -0.21%
Households -0.28% -0.21%
Families -0.38% -0.19%
Median Household Income   1.57%
Per Capita Income   2.48%

Third Lake, IL - Peer Comparisons by Rank and Percentile

The table below compares Third 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 # 672 51st
Population Density # 288 79th
Diversity Index # 246 82nd
Median Household Income # 32 98th
Per Capita Income # 57 96th

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

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