Mason City, IL Profile: Facts, Map & Data


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Mason City, Illinois - Basic Facts

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The City of Mason City had a population of 2,096 as of July 1, 2017. Mason City ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.

The primary coordinate point for Mason City is located at latitude 40.2022 and longitude -89.6971 in Mason County. The formal boundaries for the City of Mason City (see map below) encompass a land area of 1.01 sq. miles and a water area of 0 sq. miles. Mason County is in the Central time zone (GMT -6). The elevation is 581 feet.

The City of Mason City (GNIS ID: 2395040) 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 Mason City is located within Township of Mason City, a minor civil division (MCD) of Mason County.

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

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


Total Population 2,096
Daytime Population: Workers 678
Daytime Population: Residents 1,129
Total Daytime Population (TDP) 1,807
Ratio TDP/Total Population1 0.86
Population in Households 2,030
Population in Familes 1,582
Population in Group Qrtrs 66
Population Density2 2,068
Diversity Index3 9


Median Household Income $35,344
Average Household Income $48,301
Per Capita Income $20,678


Total Housing Units 1,086 (100%)
Owner Occupied HU 666 (61.3%)
Renter Occupied HU 228 (21.0%)
Vacant Housing Units 192 (17.7%)
Median Home Value $79,545
Average Home Value $106,203


Total Households 894
Average Household Size 2.27
Family Households 556
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 -1.52% -1.46%
Households -1.49% -1.5%
Families -1.58% -1.64%
Median Household Income   1.08%
Per Capita Income   2.46%

Mason City, IL - Peer Comparisons by Rank and Percentile

The table below compares Mason City 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 # 498 64th
Population Density # 258 81st
Diversity Index # 980 29th
Median Household Income # 1309 4th
Per Capita Income # 1237 10th

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

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