Mason City, IA Profile: Facts, Map & Data


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Mason City, Iowa - Basic Facts

The City of Mason City had a population of 27,857 as of July 1, 2016. Mason City ranks in the upper quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Iowa. See peer rankings below.

The primary coordinate point for Mason City is located at latitude 43.1486 and longitude -93.1998 in Cerro Gordo County. The formal boundaries for the City of Mason City (see map below) encompass a land area of 27.79 sq. miles and a water area of 0.3 sq. miles. Cerro Gordo County is in the Central time zone (GMT -6). The elevation is 1,132 feet.

The City of Mason City (GNIS ID: 468366) has a C2 Census Class Code which indicates an active incorporated place legally coextensive with a county subdivision but treated as independent of any county subdivision. 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 , a minor civil division (MCD) of Cerro Gordo 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, 2016.

Neighborhood Data

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City of Mason City, IA Boundary Map

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Mason City, IA Data & Demographics (As of July 1, 2016)


Total Population 27,857
Population in Households 27,030
Population in Familes 20,135
Population in Group Qrtrs 827
Population Density1 1,002
Diversity Index2 23


Total Households 12,448
Average Household Size 2.17
Family Households 7,205
Average Family Size 3


Total Housing Units 13,534 (100%)
Owner Occupied HU 8,218 (60.7%)
Renter Occupied HU 4,230 (31.3%)
Vacant Housing Units 1,086 ( 8.0%)
Median Home Value $117,655
Average Home Value $143,859


Median Household Income $43,843
Average Household Income $59,185
Per Capita Income $26,846
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.13% -0.21%
Households 0.11% -0.06%
Families -0.01% -0.16%
Median Household Income   3.18%
Per Capita Income   2.1%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Mason City, IA - Peer Comparisons by Rank and Percentile

The table below compares Mason City to the other 1,009 incorporated cities, towns and CDPs in Iowa by rank and percentile using July 1, 2016 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 # 16 99th
Population Density1 # 297 71st
Diversity Index2 # 111 89th
Median Household Income # 818 19th
Per Capita Income # 508 50th

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

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