Marion County IA Information


Marion County Subdivisions

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


Total Population 33,968
Daytime Population: Workers 18,279
Daytime Population: Residents 16,627
Total Daytime Population (TDP) 34,906
Ratio TDP/Total Population1 1.03
Population in Households 32,497
Population in Familes 27,162
Population in Group Qrtrs 1,471
Population Density2 61
Diversity Index3 12


Median Household Income $57,912
Average Household Income $70,592
Per Capita Income $27,797


Total Housing Units 14,464 (100%)
Owner Occupied HU 9,801 (67.8%)
Renter Occupied HU 3,354 (23.2%)
Vacant Housing Units 1,309 ( 9.1%)
Median Home Value $159,521
Average Home Value $183,423


Total Households 13,155
Average Household Size 2.47
Family Households 9,075
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 0.27% 0.39%
Households 0.46% 0.46%
Families 0.32% 0.37%
Median Household Income   1.46%
Per Capita Income   2.04%


Marion County IA - Peer Comparisons by Rank and Percentile

The table below compares Marion 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 # 22 79th
Population Density # 19 82nd
Diversity Index # 65 35th
Median Household Income # 14 87th
Per Capita Income # 37 64th

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