Buffalo Grove, IL Profile: Facts, Map & Data


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Buffalo Grove, Illinois - Basic Facts

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The Village of Buffalo Grove had a population of 40,873 as of July 1, 2018. Buffalo Grove 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 Buffalo Grove is located at latitude 42.166 and longitude -87.9618 in Cook County. The formal boundaries for the Village of Buffalo Grove (see map below) encompass a land area of 9.47 sq. miles and a water area of 0.03 sq. miles. Cook County is in the Central time zone (GMT -6). The elevation is 679 feet.

While the primary coordinates for Village of Buffalo Grove are located in Cook County, it should be noted that the formal boundaries for this community also extend into and Lake County.

The Village of Buffalo Grove (GNIS ID: ) has a P1 Census Class Code which indicates populated place that is also an incorporated place with the same name and the same census code. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The Village of Buffalo Grove is located within Township of Vernon, a minor civil division (MCD) of Cook County.

Beneath the boundary map are tables with Buffalo Grove population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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Village of Buffalo Grove, IL Boundary Map

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Buffalo Grove, IL Data & Demographics (As of July 1, 2018)


Total Population 40,873
Population in Households 40,696
Population in Familes 35,177
Population in Group Qrtrs 177
Population Density2 4,316
Diversity Index3 45


Median Household Income $102,768
Average Household Income $130,031
Per Capita Income $51,887


Total Housing Units 17,176 (100%)
Owner Occupied HU 13,172 (76.7%)
Renter Occupied HU 2,998 (17.5%)
Vacant Housing Units 1,006 ( 5.9%)
Median Home Value $329,963
Average Home Value $372,249


Total Households 16,170
Average Household Size 2.52
Family Households 11,529
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 -0.18% 0.05%
Households -0.02% 0.16%
Families -0.09% 0.07%
Median Household Income   0.83%
Per Capita Income   1.79%

Buffalo Grove, IL - Peer Comparisons by Rank and Percentile

The table below compares Buffalo Grove to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2018 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 # 41 97th
Population Density # 70 95th
Diversity Index # 221 84th
Median Household Income # 74 95th
Per Capita Income # 50 96th

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

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