Jefferson County IA Information


Jefferson County Subdivisions

Jefferson County IA Data & Demographics (As of July 1, 2016)


Total Population 17,277
Population in Households 15,546
Population in Familes 11,625
Population in Group Qrtrs 1,731
Population Density1 40
Diversity Index2 33


Total Households 7,156
Average Household Size 2.17
Family Households 4,225
Average Family Size 3


Total Housing Units 7,918 (100%)
Owner Occupied HU 4,720 (59.6%)
Renter Occupied HU 2,436 (30.8%)
Vacant Housing Units 762 ( 9.6%)
Median Home Value $96,354
Average Home Value $150,916


Median Household Income $50,864
Average Household Income $66,523
Per Capita Income $28,942
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.41% 0.56%
Households 0.71% 0.79%
Families 0.56% 0.7%
Median Household Income   2.57%
Per Capita Income   2.42%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


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, 2016 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 # 45 56th
Population Density1 # 27 74th
Diversity Index2 # 15 85th
Median Household Income # 44 57th
Per Capita Income # 15 86th

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