Mendon, IL Profile: Facts, Map & Data


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Mendon, Illinois - Basic Facts

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The Village of Mendon had a population of 978 as of July 1, 2017. Mendon ranks in the lower quartile for 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 Mendon is located at latitude 40.0894 and longitude -91.2858 in Adams County. The formal boundaries for the Village of Mendon (see map below) encompass a land area of 0.86 sq. miles and a water area of 0 sq. miles. Adams County is in the Central time zone (GMT -6). The elevation is 761 feet.

The Village of Mendon (GNIS ID: 2399313) 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 Mendon is located within Township of Mendon, a minor civil division (MCD) of Adams County.

Beneath the boundary map are tables with Mendon 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 Mendon, IL Boundary Map

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Boundary Maps: Township of Mendon | Adams County | Illinois Counties

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


Total Population 978
Daytime Population: Workers 389
Daytime Population: Residents 450
Total Daytime Population (TDP) 839
Ratio TDP/Total Population1 0.86
Population in Households 974
Population in Familes 805
Population in Group Qrtrs 4
Population Density2 1,138
Diversity Index3 3


Median Household Income $47,111
Average Household Income $54,175
Per Capita Income $21,584


Total Housing Units 383 (100%)
Owner Occupied HU 274 (71.5%)
Renter Occupied HU 93 (24.3%)
Vacant Housing Units 16 ( 4.2%)
Median Home Value $91,146
Average Home Value $125,916


Total Households 367
Average Household Size 2.65
Family Households 250
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 0.36% 0.3%
Households 0.38% 0.27%
Families 0.68% 0.16%
Median Household Income   0.47%
Per Capita Income   1.97%

Mendon, IL - Peer Comparisons by Rank and Percentile

The table below compares Mendon 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 # 715 48th
Population Density # 677 51st
Diversity Index # 1322 3rd
Median Household Income # 933 32nd
Per Capita Income # 1169 15th

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

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