United States › Illinois › Rock City CITY · 2020 ACS
Rock City Illinois · 293 residents · 0.14 sq mi
Time machine
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The short version
With 293 people, Rock City is a city in Illinois. 12% of adults hold a bachelor's degree, below the 33% national rate. Median home value sits at $103,300. The foreign-born share is 0%. 76% of homes are owner-occupied. Households here earn about 27% less than in Illinois as a whole.
At a glance
Lower income
below the US median
US median: $66,278
Older
median age 42.3
US median: 38.8
Less educated
12% hold a bachelor's degree
US average: 33%
More affordable
home values down 13%, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 33.5 in 2000
US average: 38.8
Population, 1990 – 2024
267 315 362 409 457 1990 2000 2010 2020 2024 Rock City Age distribution, 2020
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Section 02
Income & economy $49,750
−28%inflation adjusted, since 2000
from $46,250 in 2000
US average: $66,278
from $20,920 in 2000
US average: $35,364
Households earning $100K+
from 24.1% in 2009
US average: 43.9%
from 4.7% in 2000
US average: 12.8%
Workforce by industry, 2020
Public administration 6.3%
Professional, scientific, technical 3.4%
Education & health services 2.3%
Transportation & warehousing 1.1%
Agriculture, forestry, fishing 0%
Arts, entertainment, food 0%
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$103,300
−13%inflation adjusted, since 2000
from $79,300 in 2000
US average: $265,253
$806
+89%inflation adjusted, since 2000
from $283 in 2000
US average: $1,124
from 83.3% in 2000
24.4% rent
from 2.83 people in 2009
US average: 2.61
from 1.9 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 99.7%(312)
2020
White, non-Hispanic 93.9%(275)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 2 more ancestry groups with data from 6.5% in 2000
US average: 32.9%
High school or higher
from 79.9% in 2000
US average: 88.5%
from 3.3% in 2000
US average: 12.7%
Section 06
Commute & transportation from 15.5 min in 2000
US average: 26.9
from 90.4% in 2009
US average: 75.1%
from 6.2% in 2009
US average: 8.4%
Section 07
Work & employment from 13.7% in 2011
US average: 5.4%
from 75.5% in 2011
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 20.3% in 2009
US average: 39.3%
Section 08
People & community from 0.0% in 2009
US average: 13.5%
from 11.8% in 2013
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 11.8% in 2013
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2020
Gulf War (2001 or later) 34.8%(8)
Share of the 23 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
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ROCK CITY VS
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Frequently asked
How many people live in Rock City, Illinois? Rock City, Illinois has about 293 residents according to the 2020 American Community Survey.
What is the median household income in Rock City, Illinois? The typical household in Rock City, Illinois earns about $49,750 a year. Half of households make more than that, and half make less.
Is Rock City, Illinois expensive? In Rock City, Illinois, the median home is worth about $103,300, and the typical rent is about $806 a month.
How educated are people in Rock City, Illinois? About 12.4% of adults age 25 and over in Rock City, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Rock City, Illinois? About 7.9% of people in Rock City, Illinois live below the federal poverty line.
Has Rock City, Illinois grown since 1990? Yes, Rock City, Illinois has grown since 1990. The population has added about 10 residents, a change of about 4 percent over that period.
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