Markham, IL Profile: Facts, Map & Data


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Markham, Illinois - Basic Facts

The City of Markham had a population of 12,704 as of July 1, 2017. Markham 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 Markham is located at latitude 41.6001 and longitude -87.6908 in Cook County. The formal boundaries for the City of Markham (see map below) encompass a land area of 5.3 sq. miles and a water area of 0 sq. miles. Cook County is in the Central time zone (GMT -6). The elevation is 620 feet.

The City of Markham (GNIS ID: 2395013) 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 City of Markham is located within Township of Bremen, a minor civil division (MCD) of Cook County.

Beneath the boundary map are tables with Markham 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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City of Markham, IL Boundary Map

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


Total Population 12,704
Daytime Population: Workers 4,689
Daytime Population: Residents 8,541
Total Daytime Population (TDP) 13,230
Ratio TDP/Total Population1 1.04
Population in Households 12,691
Population in Familes 11,125
Population in Group Qrtrs 13
Population Density2 2,396
Diversity Index3 47


Median Household Income $43,887
Average Household Income $56,672
Per Capita Income $18,134


Total Housing Units 4,449 (100%)
Owner Occupied HU 2,840 (63.8%)
Renter Occupied HU 1,219 (27.4%)
Vacant Housing Units 390 ( 8.8%)
Median Home Value $107,004
Average Home Value $120,571


Total Households 4,059
Average Household Size 3.13
Family Households 3,134
Average Family Size 4
  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 0.21% 0.2%
Households 0.28% 0.22%
Families 0.18% 0.15%
Median Household Income   -0.5%
Per Capita Income   1.58%

Markham, IL - Peer Comparisons by Rank and Percentile

The table below compares Markham 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 # 195 86th
Population Density # 193 86th
Diversity Index # 205 85th
Median Household Income # 1047 24th
Per Capita Income # 1316 4th

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

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