Cambridge ZIP Codes — Henry County, IL

There is one unique ZIP code in Cambridge, Illinois and it is 61238. Area code: 309.
1
ZIP codes
101.28
sq mi land
0.02
sq mi water
309
area code
Cambridge, IL ZIP code map

About Cambridge, IL

Cambridge is a charming city located in Illinois, known for its welcoming atmosphere and small-town character. Nestled in Henry County, it offers residents and visitors a glimpse into the tranquil lifestyle of rural Midwestern living. The city’s rich rural landscapes, community spirit, and local events create a unique appeal for those who wish to experience a quieter way of life.

Location & geography

Cambridge, IL, is strategically situated in the northwestern portion of Illinois, making it easily accessible while maintaining a peaceful environment. The city is surrounded by several nearby towns, including Kewanee, approximately 15 miles to the south, and Geneseo, about 18 miles to the northeast. With a total land area of 101.28 square miles and a minimal water area of 0.02 square miles, Cambridge features predominantly flat terrain typical of the Midwest.

Community & economy

The character of Cambridge is defined by its close-knit community, where residents engage actively in local traditions and events. Key industries supporting the economy include agriculture and manufacturing, contributing to the city's sustainability and growth. Daily life in Cambridge blends traditional values with modern amenities, fostering a strong sense of belonging among its residents.

Transportation

Cambridge is well-connected by major highways, including U.S. Route 34, which runs east-west through the city, providing convenient access to surrounding areas. The nearest air travel options are available at Quad City International Airport, located approximately 35 miles to the northeast. Public transport options are limited, emphasizing the city’s reliance on personal vehicles for commuting.

History

Founded in the mid-19th century, Cambridge has a rich history tied to agriculture, which has served as the backbone of its economy for many years. The city's growth was marked by the establishment of key industries that leveraged its agricultural roots, making it a significant player in the surrounding region’s development. Notable events, such as annual festivals, reflect the city’s vibrant cultural heritage.

Did you know?

One surprising fact about Cambridge is that it hosts the annual Cambridge Heritage Days, celebrating the city's history and community spirit with various activities and festivities. Additionally, the Cambridge area is known for its picturesque landscapes and local parks that offer outdoor recreational opportunities.

ZIP codes for Cambridge, IL (1)
ZIP code City County Map
61238 Cambridge Henry View map

Demographics & statistics

2,985
Population
40.9
Median age
$74,737
Median household income
$32,539
Per capita income
$130,400
Median home value
$931
Median monthly rent
89.3%
Home ownership
5.8%
Poverty rate
3.9%
Unemployment
1,105
Housing units
20.1%
Bachelor's or higher

Age distribution

Male Female
79
Under 5
75
63
5–9
61
87
10–14
84
121
15–19
116
120
20–24
115
208
25–34
198
142
35–44
136
214
45–54
204
123
55–59
118
124
60–64
118
156
65–74
149
54
75–84
51
35
85+
34
← Male
Female →

Age summary

GroupCount%
Under 1864221.5%
18 and over2,34378.5%
65 and over47916.0%
Median age40.9 years

Race & ethnicity

White 94.4%
Two or more races 2.4%
Black or African American 2.2%
Hispanic or Latino 0.6%
Asian 0.5%
GroupCount%
White2,83594.4%
Two or more races712.4%
Black or African American652.2%
Hispanic or Latino190.6%
Asian140.5%

Household income

Under $10k 3.1%
$10k–$15k 0.9%
$15k–$25k 7.3%
$25k–$35k 5.3%
$35k–$50k 13.1%
$50k–$75k 20.4%
$75k–$100k 17.4%
$100k–$150k 26.2%
$150k–$200k 4.1%
$200k+ 2.1%
Range% of households
Under $10k3.1%
$10k–$15k0.9%
$15k–$25k7.3%
$25k–$35k5.3%
$35k–$50k13.1%
$50k–$75k20.4%
$75k–$100k17.4%
$100k–$150k26.2%
$150k–$200k4.1%
$200k+2.1%
Median income$74,737

Housing

Home values

Under $50k 4.5%
$50k–$100k 21.8%
$100k–$150k 35.6%
$150k–$200k 17.1%
$200k–$300k 12.0%
$300k–$500k 4.4%
$500k–$1M 3.3%
$1M+ 1.2%

Housing overview

MetricValue
Median home value$130,400
Median rent / month$931
Owner occupied89.3%
Renter occupied10.7%
Vacant6.8%
Single-family detached93.5%
Large apartment buildings0.3%
Mobile homes0.7%
Median rooms6.2
Avg household size (owned)2.56

Year built

Era%
2020 or later0.0%
2010–20191.7%
2000–20096.8%
1990–19993.9%
1980–19892.3%
1970–197911.2%
1960–196912.8%
1950–195914.8%
1940–19495.8%
1939 or earlier40.7%

Bedrooms

Size% of units
No bedroom (studio)3.0%
1 bedroom5.7%
2 bedrooms24.0%
3 bedrooms50.4%
4 bedrooms13.4%
5+ bedrooms3.4%

Vehicles per household

Vehicles% of households
No vehicle1.8%
1 vehicle21.9%
2 vehicles39.2%
3 or more37.1%

Heating fuel

Fuel type%
Utility gas65.0%
Electricity13.0%
Propane / LP gas19.4%
Wood2.5%

Households & families

Household typeCount%
Married-couple family67659.1%
Cohabiting couple484.2%
Male householder, no spouse13712.0%
Female householder, no spouse28324.7%
Households with children under 1836932.3%
Households with seniors (65+)31327.4%
Average household size2.51

Marital status

StatusMaleFemale
Never married33.5%24.0%
Married55.0%58.2%
Separated0.8%0.6%
Widowed1.9%11.9%
Divorced8.8%5.4%

Education

Less than 9th grade 1.0%
Some HS, no diploma 5.2%
HS graduate 36.0%
Some college, no degree 23.1%
Associate's degree 14.6%
Bachelor's degree 13.3%
Graduate / professional 6.8%
Metric%
HS diploma or higher93.8%
Bachelor's or higher20.1%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool284.7%
Kindergarten467.8%
Elementary school23439.5%
High school17830.1%
College / grad school10617.9%

Employment

Industry of employment

Education & healthcare 17.4%
Retail trade 15.7%
Manufacturing 11.1%
Public administration 10.5%
Construction 8.0%
Transportation & utilities 6.3%
Professional & management 5.7%
Arts, food & hospitality 5.7%
Agriculture & mining 5.6%
Other services 4.7%
Information 4.1%
Finance & real estate 3.8%
Wholesale trade 1.5%

Occupation

Category%
Management, business & arts28.4%
Service21.5%
Sales & office24.9%
Natural resources & construction11.5%
Production & transportation13.8%

Employment type

Type%
Private sector67.6%
Government25.5%
Self-employed6.9%
Unpaid family workers0.0%

Commute

Method%
Drive alone85.3%
Carpool6.4%
Public transit0.0%
Walk3.1%
Other means0.8%
Avg commute (minutes)26.6

Poverty

All people 5.8%
Under 18 years 5.6%
18 and over 5.9%
Married-couple families 0.1%
Female-led households 24.0%

Income support

Source% of households
Social Security33.6%
Retirement income29.5%
Supplemental Security1.7%
Cash public assistance0.6%
Food stamps / SNAP9.7%

Health indicators

Condition%
High blood pressure33.1%
High cholesterol33.5%
Heart disease6.3%
Stroke2.9%
Asthma9.6%
Arthritis26.5%
Kidney disease2.7%
Pulmonary disease6.9%
Cancer7.1%
Behavior / access%
Binge drinking16.5%
No physical activity23.2%
Less than 7 hrs sleep34.0%
Fair or poor health13.0%
Poor mental health12.6%
Poor physical health9.5%
No health insurance10.1%
Visited doctor (checkup)75.8%
Visited dentist65.9%
Cholesterol screening90.0%
Teeth loss13.2%

Veterans & disability

VeteransCount%
Civilian veterans1606.8%
Disability%
Any disability8.7%
Under 181.4%
18–64 years9.0%
65 and over17.5%

Health insurance coverage

Type%
Private insurance81.7%
Public insurance31.1%
Uninsured under 193.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only2,83194.8%
Spanish100.4%
Other Indo-European100.4%
Asian & Pacific Islander00.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)2,96599.3%
Born in same state2,96599.3%
Born in different state2,33878.3%
Foreign born00.0%
Naturalized citizen200.7%
Not a US citizen1365.0%

Ancestry

AncestryCount%
Italian38012.7%
Arab36212.1%
French35111.8%
AncestryCount%
Polish401.3%
English301%
German110.4%

Technology access

Metric% of households
Computer access38.3%
Internet access97.0%

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

Frequently asked questions
What ZIP codes does Cambridge, IL have?
Cambridge, IL has one ZIP code: 61238. Each ZIP code serves a distinct delivery area within the city and surrounding region.
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