Ottumwa, IA Profile: Facts, Map & Data


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Ottumwa, Iowa - Basic Facts

The City of Ottumwa had a population of 24,639 as of July 1, 2017. Ottumwa 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 Ottumwa is located at latitude 41.0223 and longitude -92.4234 in Wapello County. The formal boundaries for the City of Ottumwa (see map below) encompass a land area of 15.86 sq. miles and a water area of 0.67 sq. miles. Wapello County is in the Central time zone (GMT -6). The elevation is 673 feet.

The City of Ottumwa (GNIS ID: 2396110) 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 Ottumwa is located within Township of Center, a minor civil division (MCD) of Wapello County.

Beneath the boundary map are tables with Ottumwa population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Neighborhood Data

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City of Ottumwa, IA Boundary Map

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Boundary Maps: Township of Center | Wapello County | Iowa Counties

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Ottumwa, IA Data & Demographics (As of July 1, 2017)


Total Population 24,639
Daytime Population: Workers 16,079
Daytime Population: Residents 13,177
Total Daytime Population (TDP) 29,256
Ratio TDP/Total Population1 1.19
Population in Households 23,922
Population in Familes 18,049
Population in Group Qrtrs 717
Population Density2 1,554
Diversity Index3 43


Median Household Income $39,091
Average Household Income $53,018
Per Capita Income $22,135


Total Housing Units 11,200 (100%)
Owner Occupied HU 6,741 (60.2%)
Renter Occupied HU 3,340 (29.8%)
Vacant Housing Units 1,119 ( 10.0%)
Median Home Value $80,822
Average Home Value $108,767


Total Households 10,081
Average Household Size 2.37
Family Households 6,053
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 -0.21% -0.22%
Households -0.23% -0.24%
Families -0.35% -0.37%
Median Household Income   0.98%
Per Capita Income   1.79%

Ottumwa, IA - Peer Comparisons by Rank and Percentile

The table below compares Ottumwa to the other 1,009 incorporated cities, towns and CDPs in Iowa 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 # 21 98th
Population Density # 82 92nd
Diversity Index # 30 97th
Median Household Income # 971 4th
Per Capita Income # 944 7th

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

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