CITY · 1990 CENSUS

Rock City

Illinois · 283 residents · 0.14 sq mi

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The short version

With 283 people, Rock City is a city in Illinois. 89% of homes are owner-occupied. 8% of adults hold a bachelor's degree, below the 20% national rate. Median home value sits at $45,500. Renters pay $275 a month at the median. Households here earn about 17% less than in Illinois as a whole.

At a glance

Lower income

below the US median

US median: $30,130

Mid-age

median age 32.0

US median: 33.0

Less educated

8% hold a bachelor's degree

US average: 20%

More affordable

home values down 24%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

283

−10%vs 2000

vs 313 in 2000

1990 – 2025

Median age

32.0

−5%vs 2000

vs 33.5 in 2000

US average: 33.0

Land area

0.14 sq mi

Population, 1990 – 2024

2024441

Age distribution, 1990

Under 511.7%(33)

US avg: 7.3%

5 to 911%(31)

US avg: 7.3%

10 to 142.8%(8)

US avg: 6.9%

15 to 196.7%(19)

US avg: 7.1%

20 to 243.5%(10)

US avg: 7.5%

25 to 3419.4%(55)

US avg: 17.5%

35 to 4414.1%(40)

US avg: 15.1%

45 to 544.9%(14)

US avg: 10.2%

55 to 6411%(31)

US avg: 8.5%

65 to 745.3%(15)

US avg: 7.3%

75 to 845.3%(15)

US avg: 4%

85 and over4.2%(12)

US avg: 1.2%

BAR + DOT: THIS PLACE · TICK: US AVERAGE

Section 02

Income & economy

Median household income

$26,875

−23%inflation adjusted, since 2000

vs $46,250 in 2000

US average: $30,130

1990 – 2024

Per capita income

$12,064

−42%vs 2000

vs $20,920 in 2000

US average: $14,340

Poverty rate

8.1%

+3.4 ptsvs 2000

vs 4.7% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$45,500

−24%inflation adjusted, since 2000

vs $79,300 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$275

+28%inflation adjusted, since 2000

vs $283 in 2000

US average: $450

Owner-occupied

89.2%

+5.9 ptsvs 2000

vs 83.3% in 2000

10.8% rent

Section 04

Race & ethnicity

2000

White, non-Hispanic99.7%(312)

Black0%(0)

Hispanic / Latino0%(0)

Asian0%(0)

Other0%

1990

White, non-Hispanic97.9%(277)

Black0%(0)

Hispanic / Latino2.1%(6)

Asian0%(0)

Other2.1%(6)

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

8.2%

+1.7 ptsvs 2000

vs 6.5% in 2000

US average: 20.3%

High school or higher

70.9%

−9.0 ptsvs 2000

vs 79.9% in 2000

US average: 75.2%

Graduate degree

0.0%

−3.3 ptsvs 2000

vs 3.3% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

27.9 min

+81%vs 2000

vs 15.5 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)

Men 15+

Never married40.3%(58)

Married46.5%(67)

Widowed2.8%(4)

Divorced10.4%(15)

Women 15+

Never married30.8%(45)

Married42.5%(62)

Widowed12.3%(18)

Divorced14.4%(21)

SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024

Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured

6.3%

−5.5 ptssince 2013

from 11.8% in 2013

US average: 8.4%

Employer-based

52.4%

−7.2 ptssince 2020

from 59.6% in 2020

US average: 54.8%

Direct-purchase

7.3%

−4.0 ptssince 2020

from 11.3% in 2020

US average: 13.8%

Medicare

13.8%

−0.6 ptssince 2020

from 14.4% in 2020

US average: 18.4%

Medicaid

29.7%

+11.6 ptssince 2020

from 18.1% in 2020

US average: 20.9%

VA health care

0.9%

−1.9 ptssince 2020

from 2.8% in 2020

US average: 2.2%

Any private

56.9%

−16.0 ptssince 2020

from 72.9% in 2020

US average: 67.1%

Any public

42.0%

+9.8 ptssince 2020

from 32.2% in 2020

US average: 36.7%

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, 2024

Gulf War (2001 or later)25%(2)

US avg: 26.4%

Gulf War (1990s)0%(0)

US avg: 24.3%

Vietnam era50%(4)

US avg: 33.1%

Korean War0%(0)

US avg: 4.5%

World War II0%(0)

US avg: 1%

Share of the 8 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.

BAR + DOT: THIS PLACE · TICK: US AVERAGE

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