O'Brien County IA Information


O'Brien County Subdivisions

O'Brien County IA Data & Demographics (As of July 1, 2017)


Total Population 14,190
Daytime Population: Workers 6,897
Daytime Population: Residents 6,886
Total Daytime Population (TDP) 13,783
Ratio TDP/Total Population1 0.97
Population in Households 13,824
Population in Familes 11,090
Population in Group Qrtrs 366
Population Density2 25
Diversity Index3 20


Median Household Income $49,261
Average Household Income $65,252
Per Capita Income $27,928


Total Housing Units 6,649 (100%)
Owner Occupied HU 4,480 (67.4%)
Renter Occupied HU 1,534 (23.1%)
Vacant Housing Units 635 ( 9.6%)
Median Home Value $99,851
Average Home Value $132,662


Total Households 6,014
Average Household Size 2.3
Family Households 3,846
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 -0.2% -0.29%
Households -0.13% -0.25%
Families -0.29% -0.35%
Median Household Income   2.14%
Per Capita Income   2.55%


O'Brien County IA - Peer Comparisons by Rank and Percentile

The table below compares O'Brien County to the other 99 counties and county equivalents 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 # 56 44th
Population Density # 57 43rd
Diversity Index # 33 68th
Median Household Income # 72 28th
Per Capita Income # 35 66th

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