Colchester ZIP Codes — Mcdonough County, IL

There is one unique ZIP code in Colchester, Illinois and it is 62326. Area code: 309.

ZIP codes

77.27

sq mi land

0.18

sq mi water

309

area code

Colchester, IL ZIP code map

About Colchester, IL

Colchester, Illinois, is a small city located in Mcdonough County. Known for its friendly community and serene atmosphere, it provides a quaint environment for residents and visitors alike. The city offers a peek into both small-town charm and the natural beauty characteristic of the region.

Location & geography

Colchester is situated approximately 20 miles southwest of Macomb, 23 miles northeast of Quincy, and about 45 miles northwest of Jacksonville. The city covers a total area of 77.27 square miles, with a minimal water area of 0.18 square miles. The surrounding landscape features rural farmland and rolling hills that define much of the Mcdonough County terrain.

Community & economy

The character of Colchester is deeply rooted in its small-town atmosphere, where residents take pride in their close-knit community. The local economy is supported by agriculture, small businesses, and some light manufacturing, which contribute to daily life in the area. Community events and gatherings foster a strong sense of belonging among residents.

Transportation

Colchester is accessible via several highways, including Illinois Route 336, which connects to nearby larger cities. The nearest major airport is Greater Peoria Regional Airport, located about 56 miles southeast of the city. Public transit options are limited, highlighting the need for personal vehicles for most residents.

History

Colchester was founded in the mid-1800s and has developed a rich history that reflects the agricultural roots of the region. Key industries in the past primarily revolved around farming and local commerce, which continue to be significant today. The city has also seen various events that have shaped its development through the years.

Did you know?

A surprising fact about Colchester is that it has only one ZIP code, 62326, which serves the entire city. This unique aspect reflects its compact size and community-oriented nature.

ZIP codes for Colchester, IL (1)

ZIP code	City	County	Map
62326	Colchester	Mcdonough	View map

Demographics & statistics

2,315

Population

39.2

Median age

$57,861

Median household income

$29,123

Per capita income

$97,400

Median home value

$682

Median monthly rent

75.4%

Home ownership

14.1%

Poverty rate

3.5%

Unemployment

835

Housing units

25.0%

Bachelor's or higher

Age distribution

Male Female

Under 5

5–9

108

10–14

15–19

20–24

107

25–34

217

35–44

176

126

45–54

102

55–59

60–64

145

65–74

118

120

75–84

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	612	26.4%
18 and over	1,703	73.6%
65 and over	505	21.8%
Median age	39.2 years

Race & ethnicity

White 98.2%

Two or more races 1.4%

Hispanic or Latino 0.3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	2,280	98.2%
Two or more races	32	1.4%
Hispanic or Latino	6	0.3%
American Indian / Alaska Native	2	0.1%

Household income

Under $10k 2.6%

$10k–$15k 4.9%

$15k–$25k 16.5%

$25k–$35k 12.6%

$35k–$50k 6.8%

$50k–$75k 22.9%

$75k–$100k 14.9%

$100k–$150k 10.3%

$150k–$200k 0.8%

$200k+ 7.7%

Range	% of households
Under $10k	2.6%
$10k–$15k	4.9%
$15k–$25k	16.5%
$25k–$35k	12.6%
$35k–$50k	6.8%
$50k–$75k	22.9%
$75k–$100k	14.9%
$100k–$150k	10.3%
$150k–$200k	0.8%
$200k+	7.7%
Median income	$57,861

Housing

Home values

Under $50k 16.7%

$50k–$100k 35.5%

$100k–$150k 13.7%

$150k–$200k 12.2%

$200k–$300k 15.4%

$300k–$500k 5.9%

$500k–$1M 0.5%

Housing overview

Metric	Value
Median home value	$97,400
Median rent / month	$682
Owner occupied	75.4%
Renter occupied	24.6%
Vacant	9.9%
Single-family detached	90.4%
Large apartment buildings	0.0%
Mobile homes	7.5%
Median rooms	5.9
Avg household size (owned)	2.42

Year built

Era	%
2020 or later	0.0%
2010–2019	5.5%
2000–2009	7.1%
1990–1999	6.1%
1980–1989	7.7%
1970–1979	17.7%
1960–1969	10.9%
1950–1959	8.9%
1940–1949	3.8%
1939 or earlier	32.2%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	3.4%
2 bedrooms	32.8%
3 bedrooms	46.6%
4 bedrooms	13.0%
5+ bedrooms	4.2%

Vehicles per household

Vehicles	% of households
No vehicle	8.6%
1 vehicle	24.1%
2 vehicles	46.3%
3 or more	21.0%

Heating fuel

Fuel type	%
Utility gas	48.7%
Electricity	14.6%
Propane / LP gas	27.9%
Wood	8.8%

Households & families

Household type	Count	%
Married-couple family	533	55.1%
Cohabiting couple	95	9.8%
Male householder, no spouse	144	14.9%
Female householder, no spouse	195	20.2%
Households with children under 18	326	33.7%
Households with seniors (65+)	335	34.6%
Average household size	2.39

Marital status

Status	Male	Female
Never married	27.8%	19.5%
Married	57.8%	58.8%
Separated	0.5%	4.2%
Widowed	5.0%	6.9%
Divorced	8.9%	10.6%

Education

Less than 9th grade 1.4%

Some HS, no diploma 6.1%

HS graduate 40.5%

Some college, no degree 13.5%

Associate's degree 13.4%

Bachelor's degree 16.9%

Graduate / professional 8.2%

Metric	%
HS diploma or higher	92.5%
Bachelor's or higher	25.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	23	4.3%
Kindergarten	26	4.8%
Elementary school	267	49.5%
High school	140	26.0%
College / grad school	83	15.4%

Employment

Industry of employment

Education & healthcare 33.0%

Retail trade 14.1%

Professional & management 11.6%

Construction 10.6%

Manufacturing 10.5%

Transportation & utilities 4.7%

Agriculture & mining 3.8%

Arts, food & hospitality 3.6%

Finance & real estate 2.7%

Public administration 2.2%

Wholesale trade 1.2%

Other services 1.2%

Information 1.0%

Occupation

Category	%
Management, business & arts	25.9%
Service	20.2%
Sales & office	19.8%
Natural resources & construction	14.5%
Production & transportation	19.6%

Employment type

Type	%
Private sector	80.7%
Government	14.9%
Self-employed	4.4%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.5%
Carpool	10.2%
Public transit	1.0%
Walk	2.3%
Other means	0.6%
Avg commute (minutes)	20.4

Poverty

All people 14.1%

Under 18 years 9.6%

18 and over 15.7%

Married-couple families 7.5%

Female-led households 1.2%

Income support

Source	% of households
Social Security	37.2%
Retirement income	20.0%
Supplemental Security	2.8%
Cash public assistance	1.8%
Food stamps / SNAP	9.0%

Health indicators

Condition	%
High blood pressure	34.9%
High cholesterol	34.5%
Heart disease	7.0%
Stroke	3.2%
Asthma	9.7%
Arthritis	28.2%
Kidney disease	3.0%
Pulmonary disease	7.8%
Cancer	7.4%

Behavior / access	%
Binge drinking	14.8%
No physical activity	24.8%
Less than 7 hrs sleep	32.6%
Fair or poor health	14.5%
Poor mental health	12.8%
Poor physical health	10.4%
No health insurance	10.3%
Visited doctor (checkup)	76.1%
Visited dentist	64.4%
Cholesterol screening	89.7%
Teeth loss	14.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	178	10.5%

Disability	%
Any disability	13.3%
Under 18	8.8%
18–64 years	7.7%
65 and over	31.9%

Health insurance coverage

Type	%
Private insurance	70.2%
Public insurance	38.2%
Uninsured under 19	10.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	2,157	93.2%
Spanish	84	3.9%
Other Indo-European	7	0.3%
Asian & Pacific Islander	77	3.6%
Other languages	0	0.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	2,308	99.7%
Born in same state	2,301	99.4%
Born in different state	2,070	89.4%
Foreign born	7	0.3%
Naturalized citizen	7	0.3%
Not a US citizen	0	0.0%

Ancestry

Ancestry	Count	%
French	392	16.9%
English	207	8.9%
Arab	201	8.7%

Ancestry	Count	%
Italian	129	5.6%
Polish	33	1.4%
German	9	0.4%

Technology access

Metric	% of households
Computer access	41.8%
Internet access	82.9%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What ZIP codes does Colchester, IL have?

Colchester, IL has one ZIP code: 62326. Each ZIP code serves a distinct delivery area within the city and surrounding region.