Rock County, MN Population

Overview

9,718

Total Population

40.4

Median age

51.18%

Female population %

95.4:100

Gender ratio (M:F)

10-14 years

Largest age group

69.6

Total dependency ratio

White

Largest racial group

323

Hispanic population

Sources: U.S. Census Bureau, American Community Survey (ACS) 2021

TABLE OF CONTENTS

Age

Rock County's population is old compared to the rest of the country:

The median age in Rock County is 40.4, compared to 38.8 nationwide, according to the American Community Survey 2017 - 2021 5 Year estimates.
Rock County's population under 18 was 25.76%, compared to the 22.51% nationwide.
Rock County's elderly or the senior population (over 65 age) was 19.78% as compared to 16.04% nationwide.
Of the total population in Rock County, 21.26% were under the age of 15, 17.70% aged 15 to 29, 41.26% aged 30 to 64, 16.21% aged 65 to 84, and 3.57% were 85 years of age and older.

There are 230 more females than males in Rock County:

The female percentage in the USA is 50.50% while the male percentage is 49.50%, compared to 51.18% females and 48.82% males in Rock County, MN.
The Rock County, MN gender ratio is 95.4:100 i.e. 95.4 men to 100 women (0.954).
For male population, the largest age group is 10-14 years with a population of 377.
For the female population, the largest age group is 5-9 years with a population of 381.

Rock County's population has become increasingly diverse:

Racial distribution of Rock County population: 95.36% are White, 0.41% are Black or African American, 0.65% are American Indian and Alaska Native, 0.61% are Asian, 0.34% are some other race and 2.63% are multiracial.
Rock County's racial breakdown clearly shows that there is an absolute majority of White population in the county.
By ethnicity, 323 is Hispanic or Latino (of any race), and 9,395 (96.68% of the total population) is Non-Hispanic.
The largest racial group in Rock County is White with a population of 9,267 (95.36% of the total population).

Rock County's population has already reached its peak and is showing a trend of decline:

The peak population was 9,684 in the year 2020
From 2000 to 2010, Rock County's population decreased by 11 (0.11%), as compared to the national growth of 9.63%.
From 2010 to 2020, Rock County's population increased by 26 (0.27%), according to Census Bureau's Population Estimates Program. For the same period, the rate of growth for the United States was 7.17%.
Between the year 2000 and 2022, Rock County's population was lowest in year 2019 at 9,334.