Oskaloosa, IA Profile: Facts & Data


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Oskaloosa, Iowa - Basic Facts

The City of Oskaloosa had a population of 11,351 as of July 1, 2018. Oskaloosa ranks in the upper quartile for Population Density and 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 Oskaloosa is located at latitude 41.2922 and longitude -92.6409 in Mahaska County. The formal boundaries for the City of Oskaloosa (see map below) encompass a land area of 7.99 sq. miles and a water area of 0.01 sq. miles. Mahaska County is in the Central time zone (GMT -6). The elevation is 840 feet.

The City of Oskaloosa (GNIS ID: 468480) 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 Oskaloosa is located within , a minor civil division (MCD) of Mahaska County.

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  1. Oskaloosa 2018 Demographic Data
  2. Growth Rates for Oskaloosa (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Iowa Research Tools (Easy Tools & Current Data)
  3. Iowa Data Comparison Tool - 2018 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2018, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Oskaloosa, IA Data & Demographics (As of July 1, 2018)


Total Population 11,351
Population in Households 10,806
Population in Familes 8,147
Population in Group Qrtrs 545
Population Density2 1,421
Diversity Index3 21


Median Household Income $40,787
Average Household Income $54,475
Per Capita Income $22,860


Total Housing Units 5,139 (100%)
Owner Occupied HU 2,615 (50.9%)
Renter Occupied HU 2,023 (39.4%)
Vacant Housing Units 501 ( 9.7%)
Median Home Value $107,286
Average Home Value $137,390


Total Households 4,638
Average Household Size 2.33
Family Households 2,782
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2018 2018-2023
Population -0.18% -0.22%
Households -0.25% -0.27%
Families -0.33% -0.4%
Median Household Income   2.47%
Per Capita Income   2.77%

Oskaloosa, IA - Peer Comparisons by Rank and Percentile

The table below compares Oskaloosa to the other 1,009 incorporated cities, towns and CDPs in Iowa 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 # 34 97th
Population Density # 120 88th
Diversity Index # 158 84th
Median Household Income # 956 5th
Per Capita Income # 951 6th

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

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