Rock City is a city located in Stephenson County Illinois. With a 2020 population of 289, it is the 1067th largest city in Illinois and the 22206th largest city in the United States. Rock City is currently declining at a rate of -0.69% annually and its population has decreased by -18.36% since the most recent census, which recorded a population of 354 in 2020. Spanning over 0 miles, Rock City has a population density of 2,154 people per square mile.
The average household income in Rock City is $61,990 with a poverty rate of 7.91%. The median rental costs in recent years comes to $806 per month, and the median house value is $103,300. The median age in Rock City is 33.3 years, 32.6 years for males, and 37.3 years for females.
According to the most recent ACS, the racial composition of Rock Citywas:
Rate of Home Ownership
Average Family Size
Average Household Size
The highest rate of high school graduation is among native american people with a rate of 100.00%.
The highest rate of bachelors degrees is among white people with a rate of 12.74%.
98.74% of Rock City residents speak only English, while 1.26% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.63% of the population.
Overall Poverty Rate
Male Poverty Rate
Female Poverty Rate
The race most likely to be in poverty in Rock City is White, with 8.31% below the poverty level.
The race least likely to be in poverty in Rock City is Multiple, with 20.00% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 4.35%. Among those working part-time, it was 3.77%, and for those that did not work, the poverty rate was 15.79%.
Number of Veterans
Veteran Poverty Rate
Veteran Disability Rate
Labor Force Participation
Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Born in Rock City
100.00% of Rock City residents were born in the United States, with 70.90% having been born in Illinois. 0.00% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.