Delaware County IA Information


Delaware County Subdivisions

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


Total Population 17,974
Population in Households 17,756
Population in Familes 14,750
Population in Group Qrtrs 218
Population Density1 31
Diversity Index2 7


Median Household Income $54,293
Average Household Income $68,968
Per Capita Income $27,472


Total Housing Units 8,208 (100%)
Owner Occupied HU 5,732 (69.8%)
Renter Occupied HU 1,394 (17.0%)
Vacant Housing Units 1,082 (13.2%)
Median Home Value $144,112
Average Home Value $182,724


Total Households 7,126
Average Household Size 2.49
Family Households 4,974
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 0.14% -0.18%
Households 0.11% -0.21%
Families -0.02% -0.29%
Median Household Income   1.4%
Per Capita Income   1.86%


Delaware County IA - Peer Comparisons by Rank and Percentile

The table below compares Delaware 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 # 40 61st
Population Density # 40 61st
Diversity Index # 98 2nd
Median Household Income # 36 65th
Per Capita Income # 64 36th

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