Jefferson County IA Information


Jefferson County Subdivisions

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


Total Population 17,761
Population in Households 16,030
Population in Familes 11,818
Population in Group Qrtrs 1,731
Population Density1 41
Diversity Index2 38


Median Household Income $52,700
Average Household Income $66,956
Per Capita Income $28,900


Total Housing Units 7,960 (100%)
Owner Occupied HU 4,480 (56.3%)
Renter Occupied HU 2,828 (35.5%)
Vacant Housing Units 652 ( 8.2%)
Median Home Value $106,716
Average Home Value $156,708


Total Households 7,308
Average Household Size 2.19
Family Households 4,289
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. 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 0.65% 0.74%
Households 0.79% 0.87%
Families 0.61% 0.76%
Median Household Income   2.53%
Per Capita Income   2.78%


Jefferson County IA - Peer Comparisons by Rank and Percentile

The table below compares Jefferson 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 # 41 60th
Population Density # 27 74th
Diversity Index # 11 90th
Median Household Income # 47 54th
Per Capita Income # 40 61st

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