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Colchester, IL

City in McDonough County, Illinois.

Population

1,128

Land area

1.2sq mi

People per sq mi

981

ZIP codes

0

Colchester and its ZIP codes

Full map

Colchester at a glance

  • Colchester is about 4.3 times as dense as Illinois as a whole.
  • The median household income is $63,981, 23% below the Illinois median of $83,390.
  • A typical owner-occupied home is valued at $91,700 (65% below Illinois) and median rent is $808 a month.

Local data for Colchester, IL

Counts from official public data

Housing and community stats

Colchester, IL, American Community Survey 2020-2024

Full profile

Median household income

$63,981

Poverty rate

7.8%

Median home value

$91,700

Median rent

$808/mo

Homeownership

74.4%

Bachelor's or higher

14.0%

Median age

41.6

Average commute

15.7 min

Largest reported origins and ancestries: German Americans (260), Irish Americans (78), Mexican Americans (34).

Home values and rentsIncome, education and commute

Economy and federal money

Jobs, pay, income and spending are for McDonough County. PPP loans are for Colchester.

Details

Unemployment rate

4.1%

Aug 2026, -0.9 pts in a year

Average annual pay

$50,003

9,955 jobs, 2025

Income per person

$51,383

BEA, 2024

Federal spending

$159M

FY 2026, $5,855 per person

McDonough County economyFederal spending

How people get to work

Colchester, IL, workers 16 and older. American Community Survey 5-year estimates

  • Drove alone84.3%
  • Carpooled8.8%
  • Public transit2.0%
  • Walked0.0%
  • Bicycle0.0%
  • Taxi, ride-hailing, motorcycle or other0.9%
  • Worked from home4.1%

Average one-way commute: 15.7 minutes for people who do not work from home.

Environment and hazard risk

Colchester, IL, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very Low

Top: drought

Storm events since 1996

684

Countywide, mostly thunderstorm wind

Flood insurance policies

8

0.1% of homes, county

July high / Jan low

85° / 15°F

39.1 inches of rain a year

Hazards, floods and storm historyCheck a flood zone

Health statistics

Share of adults in Colchester, IL, CDC PLACES estimates

All 40 measures

Obesity

37.7%

U.S. 33.3% +4.4 pts

Diabetes

13.1%

U.S. 12.1% +1.0 pts

Smoking

16.2%

U.S. 12.8% +3.4 pts

Uninsured (18-64)

7.9%

U.S. 11.1% -3.2 pts

Cities near Colchester

NameDistanceLand area (sq mi)
TennesseeVillage2.5 mi0.4
MacombCity7.2 mi10.7
SciotaVillage9.9 mi0.3
BlandinsvilleVillage10 mi0.9
PlymouthVillage11 mi0.6
Good HopeVillage11 mi0.3
IndustryVillage12 mi0.5
BardolphVillage13 mi0.6
La HarpeCity14 mi1.4
AdairCensus-designated place16 mi0.4
AugustaVillage16 mi0.7
LittletonVillage16 mi1.2
BentleyTown18 mi0.1
BushnellCity18 mi2.1
CarthageCity18 mi2.5
CamdenVillage19 mi0.8

Frequently asked questions

What county is Colchester, IL in?
Colchester is in McDonough County, Illinois.
What is the population of Colchester, IL?
About 1,128 people live in Colchester, based on American Community Survey 5-year estimates.
What cities are near Colchester?
Nearby places include Tennessee (2.5 mi), Macomb (7.2 mi), Sciota (9.9 mi), Blandinsville (10 mi), Plymouth (11 mi).

Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023