Northbrook, IL Profile: Facts, Map & Data


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Northbrook, Illinois - Basic Facts

The Village of Northbrook had a population of 34,159 as of July 1, 2017. Northbrook 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 Northbrook is located at latitude 42.1297 and longitude -87.8351 in Cook County. The formal boundaries for the Village of Northbrook (see map below) encompass a land area of 13.19 sq. miles and a water area of 0.06 sq. miles. Cook County is in the Central time zone (GMT -6). The elevation is 646 feet.

The Village of Northbrook (GNIS ID: 2399526) 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 Northbrook is located within Township of Northfield, a minor civil division (MCD) of Cook County.

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

Alternate Unofficial Names for Northbrook: Shermerville, Techny.

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Village of Northbrook, IL Boundary Map

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Boundary Maps: Township of Northfield | Cook County | Illinois Counties

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


Total Population 34,159
Daytime Population: Workers 38,933
Daytime Population: Residents 18,263
Total Daytime Population (TDP) 57,196
Ratio TDP/Total Population1 1.67
Population in Households 33,635
Population in Familes 29,554
Population in Group Qrtrs 524
Population Density2 2,589
Diversity Index3 33


Median Household Income $119,426
Average Household Income $171,589
Per Capita Income $67,298


Total Housing Units 13,680 (100%)
Owner Occupied HU 11,248 (82.2%)
Renter Occupied HU 1,865 (13.6%)
Vacant Housing Units 567 ( 4.1%)
Median Home Value $564,776
Average Home Value $600,749


Total Households 13,113
Average Household Size 2.57
Family Households 9,632
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 0.4% 0.31%
Households 0.5% 0.36%
Families 0.16% 0.26%
Median Household Income   1.01%
Per Capita Income   1.61%

Northbrook, IL - Peer Comparisons by Rank and Percentile

The table below compares Northbrook 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 # 55 96th
Population Density # 171 88th
Diversity Index # 334 76th
Median Household Income # 35 98th
Per Capita Income # 26 98th

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

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