CITY · 1990 CENSUS

Colchester

Illinois · 1,634 residents · 1.15 sq mi

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The short version

Colchester is a city of 1,634 people in Illinois. Median home value sits at $27,200. That trails the Illinois median by roughly 35%. 9% of adults hold a bachelor's degree or higher. Owners hold 75% of the housing stock. At a median age of 36.0, this is an older place than the country as a whole.

At a glance

Lower income

below the US median

US median: $30,130

Older

median age 36.0

US median: 33.0

Less educated

9% hold a bachelor's degree

US average: 20%

More affordable

home values down 16%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

1,634

+9%vs 2000

vs 1,493 in 2000

1990 – 2025

Median age

36.0

−5%vs 2000

vs 38.1 in 2000

US average: 33.0

Land area

1.15 sq mi

Population, 1990 – 2024

20241K

Age distribution, 1990

Under 57.2%(117)

US avg: 7.3%

5 to 97.5%(123)

US avg: 7.3%

10 to 146.2%(102)

US avg: 6.9%

15 to 196.1%(100)

US avg: 7.1%

20 to 246.2%(101)

US avg: 7.5%

25 to 3415.6%(255)

US avg: 17.5%

35 to 4411.5%(188)

US avg: 15.1%

45 to 5411.6%(189)

US avg: 10.2%

55 to 648.8%(144)

US avg: 8.5%

65 to 749.6%(157)

US avg: 7.3%

75 to 846.8%(111)

US avg: 4%

85 and over2.9%(47)

US avg: 1.2%

BAR + DOT: THIS PLACE · TICK: US AVERAGE

Section 02

Income & economy

Median household income

$20,938

−12%inflation adjusted, since 2000

vs $31,283 in 2000

US average: $30,130

1990 – 2024

Per capita income

$9,880

−36%vs 2000

vs $15,354 in 2000

US average: $14,340

Poverty rate

13.8%

+6.4 ptsvs 2000

vs 7.3% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$27,200

−16%inflation adjusted, since 2000

vs $42,800 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$268

−8%inflation adjusted, since 2000

vs $384 in 2000

US average: $450

Owner-occupied

74.5%

+0.4 ptsvs 2000

vs 74.1% in 2000

25.5% rent

Section 04

Race & ethnicity

2000

White, non-Hispanic99%(1,478)

Black0%(0)

Hispanic / Latino0.6%(9)

Asian0.1%(1)

Other0%

1990

White, non-Hispanic99.7%(1,629)

Black0%(0)

Hispanic / Latino0%(0)

Asian0.2%(3)

Other0.1%(2)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

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

Hispanic origin

Mexican3%(34)

Puerto Rican0.1%(1)

Ancestry

English23.5%(265)

German23%(260)

Irish6.9%(78)

Welsh3.4%(38)

Norwegian2.2%(25)

Dutch2%(23)

Scottish2%(23)

Swedish1.7%(19)

Polish1.4%(16)

American0.9%(10)

French Canadian0.9%(10)

French0.7%(8)

+ 4 more ancestry groups with data

Czech0.6%(7)

Slovak0.4%(5)

Italian0.4%(4)

Scotch-Irish0.1%(1)

RANKED:Largest English population · Largest German population · Largest Irish population · Largest Welsh population · Largest Mexican population

Section 05

Education

Bachelor's degree or higher

9.2%

−1.1 ptsvs 2000

vs 10.3% in 2000

US average: 20.3%

High school or higher

74.2%

−10.0 ptsvs 2000

vs 84.2% in 2000

US average: 75.2%

Graduate degree

4.0%

+1.7 ptsvs 2000

vs 2.4% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

17.4 min

+29%vs 2000

vs 13.5 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 married18.9%(81)

Married57.1%(245)

Widowed0.7%(3)

Divorced23.3%(100)

Women 15+

Never married13.2%(63)

Married60.4%(288)

Widowed13.2%(63)

Divorced13.2%(63)

SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024

Section 09

Health coverage

Showing 2024 (the nearest year with coverage data).

Uninsured

4.8%

−10.9 ptssince 2013

from 15.7% in 2013

US average: 8.4%

Employer-based

58.5%

Unchangedsince 2020

from 58.5% in 2020

US average: 54.8%

Direct-purchase

10.1%

−2.2 ptssince 2020

from 12.3% in 2020

US average: 13.8%

Medicare

22.2%

−0.7 ptssince 2020

from 22.9% in 2020

US average: 18.4%

Medicaid

24.4%

−3.0 ptssince 2020

from 27.4% in 2020

US average: 20.9%

VA health care

1.4%

−0.3 ptssince 2020

from 1.7% in 2020

US average: 2.2%

Any private

69.5%

+1.9 ptssince 2020

from 67.6% in 2020

US average: 67.1%

Any public

42.9%

−2.0 ptssince 2020

from 44.9% 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)13.8%(11)

US avg: 26.4%

Gulf War (1990s)51.2%(41)

US avg: 24.3%

Vietnam era16.3%(13)

US avg: 33.1%

Korean War0%(0)

US avg: 4.5%

World War II0%(0)

US avg: 1%

Share of the 80 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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