Marion County IA Information


Marion County Subdivisions

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


Total Population 34,156
Population in Households 32,814
Population in Familes 27,234
Population in Group Qrtrs 1,342
Population Density2 62
Diversity Index3 13


Median Household Income $58,770
Average Household Income $71,189
Per Capita Income $27,905


Total Housing Units 14,447 (100%)
Owner Occupied HU 9,520 (65.9%)
Renter Occupied HU 3,669 (25.4%)
Vacant Housing Units 1,258 ( 8.7%)
Median Home Value $159,262
Average Home Value $182,230


Total Households 13,189
Average Household Size 2.49
Family Households 9,085
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 0.3% 0.42%
Households 0.44% 0.43%
Families 0.29% 0.34%
Median Household Income   2.18%
Per Capita Income   2.2%


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, 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 # 22 79th
Population Density # 19 82nd
Diversity Index # 61 39th
Median Household Income # 15 86th
Per Capita Income # 57 43rd

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