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Illinois ZIP Codes
Henry County
Osco, IL
61274
61274 ZIP Code — Osco, IL
Henry County, Illinois
ZIP code 61274 is located in
Osco ,
Illinois ,
within Henry County .
It covers approximately 23.59 square miles and serves a population of
269 residents.
This is a standard ZIP code in the Central (CT) timezone,
served by area code 309 .
About ZIP code 61274
The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $129,700. Owner-occupancy is high at 88%, well above the national average.
Median household income is $93,846. 63% of households receive Social Security income, suggesting a notable retiree or disability population.
The dominant occupation class is production, transportation, and material moving, with manufacturing as the leading industry. The average commute of 34 minutes is near the national average.
Educational attainment is near the national average, with 23% of residents holding a bachelor's degree or higher.
Overall, ZIP code 61274 reflects a community defined by high homeownership and a significant Social Security-dependent population.
61274 ZIP code map
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Cities in ZIP code 61274
Below are the cities the US Postal Service accepts for ZIP code 61274. Using any city not on this list may result in mail delivery delays.
City
Status
Osco
Preferred
Nearby ZIP codes
Demographics
updated 05/2026
Population
Total population
269
Population density
11 / sq mi
State FIPS
17
County FIPS
073
Geography
Land area
23.59 sq mi
Water area
0.00 sq mi
Latitude
41.3755
Longitude
-90.2609
Timezone
Central (CT)
Area code
309
Economics
updated 05/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
12.1%
43.0%
37.2%
$50k – $100k
32.7%
31.7%
29.6%
$100k – $200k
43.9%
21.2%
24.4%
Over $200k
11.2%
4.1%
8.8%
Demographics & statistics
$93,846
Median household income
$129,700
Median home value
22.5%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 26 9.7%
18 and over 243 90.3%
65 and over 62 23.0%
Median age 53.5 years
Race & ethnicity
Household income
Income range
This ZIP
County avg
State avg
Under $50k
12.1%
43.0%
37.2%
$50k – $100k
32.7%
31.7%
29.6%
$100k – $200k
43.9%
21.2%
24.4%
Over $200k
11.2%
4.1%
8.8%
Range % of households
$15k–$25k 8.3%
$25k–$35k 7.4%
$35k–$50k 10.2%
$50k–$75k 17.6%
$75k–$100k 12.0%
$100k–$150k 20.4%
$150k–$200k 13.9%
$200k+ 10.2%
Median income $93,846
Housing
Housing overview
Metric Value
Median home value $129,700
Median rent / month $0
Owner occupied 88.0%
Renter occupied 12.0%
Vacant 0.0%
Single-family detached 100.0%
Large apartment buildings 0.0%
Mobile homes 0.0%
Median rooms 6.9
Avg household size (owned) 2.49
Year built
Era %
2020 or later 0.0%
2010–2019 0.0%
2000–2009 0.0%
1990–1999 0.0%
1980–1989 0.0%
1970–1979 0.0%
1960–1969 8.3%
1950–1959 10.2%
1940–1949 19.4%
1939 or earlier 62.0%
Bedrooms
Size % of units
No bedroom (studio) 0.0%
1 bedroom 9.3%
2 bedrooms 12.0%
3 bedrooms 31.5%
4 bedrooms 38.9%
5+ bedrooms 8.3%
Vehicles per household
Vehicles % of households
No vehicle 0.0%
1 vehicle 10.2%
2 vehicles 36.1%
3 or more 53.7%
Heating fuel
Fuel type %
Utility gas 50.9%
Propane / LP gas 49.1%
Households & families
Household type Count %
Married-couple family 75 69.4%
Cohabiting couple 0 0.0%
Male householder, no spouse 11 10.2%
Female householder, no spouse 22 20.4%
Households with children under 18 31 28.7%
Households with seniors (65+) 58 53.7%
Average household size 2.49
Marital status
Status Male Female
Never married 31.2% 13.9%
Married 52.2% 68.0%
Separated 0.0% 0.0%
Widowed 8.0% 7.4%
Divorced 8.7% 10.7%
Education
Some college, no degree
18.0%
Graduate / professional
11.0%
Metric %
HS diploma or higher 94.0%
Bachelor's or higher 22.5%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 0 0.0%
Kindergarten 0 0.0%
Elementary school 0 0.0%
High school 17 53.1%
College / grad school 15 46.9%
Employment
Industry of employment
Education & healthcare
15.3%
Finance & real estate
9.8%
Agriculture & mining
5.5%
Public administration
3.7%
Occupation
Category %
Management, business & arts 23.9%
Service 12.9%
Sales & office 17.2%
Natural resources & construction 14.7%
Production & transportation 31.3%
Employment type
Type %
Private sector 79.8%
Government 10.4%
Self-employed 4.3%
Unpaid family workers 5.5%
Commute
Method %
Drive alone 80.6%
Carpool 19.4%
Public transit 0.0%
Walk 0.0%
Work from home 0.0%
Other means 0.0%
Avg commute (minutes) 34.2
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households
Social Security 63.0%
Retirement income 43.5%
Supplemental Security 0.0%
Cash public assistance 0.0%
Food stamps / SNAP 7.4%
Health indicators
Condition %
Obesity 34.2%
High blood pressure 32.5%
High cholesterol 33.2%
Diabetes 9.2%
Heart disease 6.2%
Stroke 2.9%
Asthma 9.6%
Arthritis 26.0%
Kidney disease 2.6%
Pulmonary disease 6.8%
Cancer 6.8%
Behavior / access %
Smoking 18.0%
Binge drinking 16.8%
No physical activity 23.1%
Less than 7 hrs sleep 34.2%
Depression 17.8%
Fair or poor health 13.0%
Poor mental health 12.8%
Poor physical health 9.6%
No health insurance 9.9%
Visited doctor (checkup) 75.5%
Visited dentist 65.9%
Cholesterol screening 90.0%
Teeth loss 13.7%
Veterans & disability
Veterans Count %
Civilian veterans 24 9.9%
Disability %
Any disability 20.4%
Under 18 0.0%
18–64 years 12.2%
65 and over 53.2%
Health insurance coverage
Type %
Private insurance 82.2%
Public insurance 30.9%
No insurance 3.7%
Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 260 96.7%
Spanish 0 0.0%
Other Indo-European 0 0.0%
Asian & Pacific Islander 0 0.0%
Other languages 0 0.0%
Place of birth & citizenship
Origin Count %
Native born (US) 269 100.0%
Born in same state 269 100.0%
Born in different state 218 81.0%
Foreign born 0 0.0%
Naturalized citizen 0 0.0%
Not a US citizen 0 0.0%
Ancestry
Ancestry Count %
French 38 14.1%
Italian 21 7.8%
Ancestry Count %
English 10 3.7%
Technology access
Metric % of households
Computer access 40.1%
Internet access 91.7%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 61274
What city is ZIP code 61274 in?
ZIP code 61274 is primarily assigned to Osco, Illinois.
What county is ZIP code 61274 in?
ZIP code 61274 falls within Henry County, Illinois.
Does ZIP code 61274 have a large retiree population?
63% of households in ZIP code 61274 receive Social Security income, suggesting a significant retiree or disability population.
Is ZIP code 61274 mostly owner-occupied?
88% of occupied units in ZIP code 61274 are owner-occupied, well above the national average.
What is the typical home value in ZIP code 61274?
The median home value in ZIP code 61274 is $129,700.
Does ZIP code 61274 have a large veteran population?
10% of civilians in ZIP code 61274 are veterans, above the national average of ~7%.
What timezone is ZIP code 61274 in?
ZIP code 61274 observes the CST timezone.
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