Stephenson County IL Information


Stephenson County Subdivisions

Stephenson County IL Data & Demographics (As of July 1, 2017)


Total Population 46,654
Daytime Population: Workers 20,954
Daytime Population: Residents 24,926
Total Daytime Population (TDP) 45,880
Ratio TDP/Total Population1 0.98
Population in Households 45,819
Population in Familes 36,570
Population in Group Qrtrs 835
Population Density2 83
Diversity Index3 33


Median Household Income $46,394
Average Household Income $59,909
Per Capita Income $25,253


Total Housing Units 21,966 (100%)
Owner Occupied HU 13,551 (61.7%)
Renter Occupied HU 5,968 (27.2%)
Vacant Housing Units 2,447 (11.1%)
Median Home Value $110,821
Average Home Value $138,850


Total Households 19,519
Average Household Size 2.35
Family Households 12,640
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 -0.31% -0.62%
Households -0.23% -0.58%
Families -0.4% -0.69%
Median Household Income   1.36%
Per Capita Income   2.41%


Stephenson County IL - Peer Comparisons by Rank and Percentile

The table below compares Stephenson County to the other 102 counties and county equivalents in Illinois 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 # 33 69th
Population Density # 30 72nd
Diversity Index # 28 74th
Median Household Income # 69 33rd
Per Capita Income # 64 38th

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