Rock County MN Information


Rock County Subdivisions

Rock County MN Data & Demographics (As of July 1, 2017)


Total Population 9,747
Daytime Population: Workers 4,267
Daytime Population: Residents 4,634
Total Daytime Population (TDP) 8,901
Ratio TDP/Total Population1 0.91
Population in Households 9,487
Population in Familes 7,892
Population in Group Qrtrs 260
Population Density2 20
Diversity Index3 13


Median Household Income $51,971
Average Household Income $68,754
Per Capita Income $28,133


Total Housing Units 4,306 (100%)
Owner Occupied HU 3,012 (69.9%)
Renter Occupied HU 935 (21.7%)
Vacant Housing Units 359 ( 8.3%)
Median Home Value $130,325
Average Home Value $158,732


Total Households 3,947
Average Household Size 2.4
Family Households 2,669
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 0.09% 0.09%
Households 0.1% 0.11%
Families 0.02% 0.05%
Median Household Income   2.75%
Per Capita Income   3.73%


Rock County MN - Peer Comparisons by Rank and Percentile

The table below compares Rock County to the other 87 counties and county equivalents in Minnesota 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 # 70 21st
Population Density # 54 39th
Diversity Index # 71 20th
Median Household Income # 56 37th
Per Capita Income # 54 39th

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