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CITY · 2000 CENSUS

Rock City

Illinois · 313 residents · 0.136 sq mi
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The short version

Rock City has roughly average household income, with a median household income of $46,250. Population has held roughly steady since 1990. 7% of adults hold a bachelor's degree or higher, below the national rate of 24%. Median home value has risen by half since 1990, reaching $79,300. Poverty is rare here, at 4.7% of residents.

At a glance
Wealthier
above the US median
US median: $42,589
Younger
median age 33.5
US median: 35.2
Less educated
7% hold a bachelor's degree
US average: 24%
Less affordable
home values up 32%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
313
+11%since 1990
from 283 in 1990
1990 – 2025
Median age
33.5
+5%since 1990
from 32.0 in 1990
US average: 35.2
Population, 1990 – 2024
2673153624094571990201020202024Rock City
2024441
1990201020202024
Age distribution, 2000
Under 55.1%(16)
US avg: 6.8%
5 to 98.3%(26)
US avg: 7.3%
10 to 1411.2%(35)
US avg: 7.3%
15 to 198.9%(28)
US avg: 7.2%
20 to 243.8%(12)
US avg: 6.7%
25 to 3415.3%(48)
US avg: 14.2%
35 to 4413.4%(42)
US avg: 16%
45 to 5411.2%(35)
US avg: 13.4%
55 to 645.4%(17)
US avg: 8.6%
65 to 747.7%(24)
US avg: 6.5%
75 to 846.1%(19)
US avg: 4.4%
85 and over3.5%(11)
US avg: 1.5%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$46,250
+31%inflation adjusted, since 1990
from $26,875 in 1990
US average: $42,589
1990 – 2024
Per capita income
$20,920
+73%since 1990
from $12,064 in 1990
US average: $21,522
Poverty rate
4.7%
−3.4 ptssince 1990
from 8.1% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$79,300
+32%inflation adjusted, since 1990
from $45,500 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$283
−22%inflation adjusted, since 1990
from $275 in 1990
US average: $602
Owner-occupied
83.3%
−5.9 ptssince 1990
from 89.2% in 1990
16.7% rent
RELATED:See current rent listings in Rock City on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic97.9%(277)
Black0%(0)
Hispanic / Latino2.1%(6)
Asian0%(0)
2000
White, non-Hispanic99.7%(312)
Black0%(0)
Hispanic / Latino0%(0)
Asian0%(0)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican32%(141)
Spaniard1.1%(5)
Ancestry
German30.6%(135)
Russian14.7%(65)
Irish11.6%(51)
Norwegian4.3%(19)
American3.9%(17)
English3.4%(15)
Dutch3.2%(14)
Swiss2.7%(12)
Swedish2%(9)
Italian1.8%(8)
Ukrainian1.8%(8)
Czech0.5%(2)
RANKED:Largest Mexican population · Largest German population · Largest Russian population · Largest Irish population · Largest Norwegian population
Section 05

Education

Bachelor's degree or higher
6.5%
−1.7 ptssince 1990
from 8.2% in 1990
US average: 24.4%
High school or higher
79.9%
+9.0 ptssince 1990
from 70.9% in 1990
US average: 80.3%
Graduate degree
3.3%
+3.3 ptssince 1990
from 0.0% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
15.5 min
−45%since 1990
from 27.9 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status
Men 15+
Never married19.7%(24)
Married61.5%(75)
Widowed8.2%(10)
Divorced10.7%(13)
Women 15+
Never married17.1%(24)
Married50.7%(71)
Widowed22.9%(32)
Divorced9.3%(13)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Drill deeper

Places similar to Rock City

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Pop 290
Morganton
Pop 296
Pine Level
Pop 248
Westville
Pop 274
Places similar to Rock City
Head to head

Compare Rock City to nearby cities

ROCK CITY VS
Freeport
Income$51,723+12%
Home value$92,100+16%
Population23,202+8041%
SEE FULL COMPARISON →
ROCK CITY VS
Monroe
Income$69,334+50%
Home value$195,300+146%
Population10,581+3613%
SEE FULL COMPARISON →
ROCK CITY VS
Machesney Park
Income$75,489+63%
Home value$173,700+119%
Population22,805+7902%
SEE FULL COMPARISON →
ROCK CITY VS
Rockford
Income$54,752+18%
Home value$129,000+63%
Population147,384+51614%
SEE FULL COMPARISON →
Frequently asked

How many people live in Rock City, Illinois?

Rock City, Illinois has about 313 residents according to the 2000 Census.

What is the median household income in Rock City, Illinois?

The typical household in Rock City, Illinois earns about $46,250 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 $79,300, and the typical rent is about $283 a month.

How educated are people in Rock City, Illinois?

About 6.5% 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 4.7% 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 30 residents, a change of about 11 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →