Clay City, IL Profile: Facts, Map & Data


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Clay City, Illinois - Basic Facts

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The Village of Clay City had a population of 815 as of July 1, 2018. Clay City ranks in the lower 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 Clay City is located at latitude 38.6857 and longitude -88.3486 in Clay County. The formal boundaries for the Village of Clay City (see map below) encompass a land area of 1.78 sq. miles and a water area of 0 sq. miles. Clay County is in the Central time zone (GMT -6). The elevation is 433 feet.

The Village of Clay City (GNIS ID: 2397637) 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 Clay City is located within Township of Clay City, a minor civil division (MCD) of Clay County.

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

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Boundary Maps: Township of Clay City | Clay County | Illinois Counties

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Clay City, IL Data & Demographics (As of July 1, 2018)


Total Population 815
Population in Households 815
Population in Familes 632
Population in Group Qrtrs 0
Population Density2 457
Diversity Index3 4


Median Household Income $36,852
Average Household Income $46,374
Per Capita Income $21,113


Total Housing Units 441 (100%)
Owner Occupied HU 299 (67.8%)
Renter Occupied HU 70 (15.9%)
Vacant Housing Units 72 (16.3%)
Median Home Value $69,048
Average Home Value $101,007


Total Households 369
Average Household Size 2.21
Family Households 229
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 -1.95% -1.34%
Households -1.67% -1.28%
Families -1.15% -1.35%
Median Household Income   0.73%
Per Capita Income   1.54%

Clay City, IL - Peer Comparisons by Rank and Percentile

The table below compares Clay City 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 # 766 44th
Population Density # 1106 19th
Diversity Index # 1292 5th
Median Household Income # 1294 5th
Per Capita Income # 1243 9th

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

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