Cairo, IL Profile: Facts, Map & Data


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Cairo, Illinois - Basic Facts

The City of Cairo had a population of 2,364 as of July 1, 2017. Cairo ranks in the lower quartile for Population Density and the upper 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 Cairo is located at latitude 37.0063 and longitude -89.1829 in Alexander County. The formal boundaries for the City of Cairo (see map below) encompass a land area of 6.98 sq. miles and a water area of 2.1 sq. miles. Alexander County is in the Central time zone (GMT -6). The elevation is 312 feet.

The City of Cairo (GNIS ID: 2393491) 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 Cairo is located within Cairo Election Precinct, a minor civil division (MCD) of Alexander County.

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

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Boundary Maps: Cairo Election Precinct | Alexander County | Illinois Counties

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


Total Population 2,364
Daytime Population: Workers 1,213
Daytime Population: Residents 1,678
Total Daytime Population (TDP) 2,891
Ratio TDP/Total Population1 1.22
Population in Households 2,338
Population in Familes 1,720
Population in Group Qrtrs 26
Population Density2 339
Diversity Index3 40


Median Household Income $25,835
Average Household Income $38,312
Per Capita Income $17,886


Total Housing Units 1,584 (100%)
Owner Occupied HU 498 (31.4%)
Renter Occupied HU 597 (37.7%)
Vacant Housing Units 490 (30.9%)
Median Home Value $36,652
Average Home Value $68,209


Total Households 1,094
Average Household Size 2.14
Family Households 570
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 -2.46% -2.11%
Households -2.02% -2.08%
Families -2.34% -2.35%
Median Household Income   -0.72%
Per Capita Income   1.31%

Cairo, IL - Peer Comparisons by Rank and Percentile

The table below compares Cairo 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 # 476 65th
Population Density # 1171 14th
Diversity Index # 245 82nd
Median Household Income # 1355 1st
Per Capita Income # 1324 3rd

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

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