61818 ZIP Code — Cerro Gordo, IL

Piatt County, Illinois

ZIP code 61818 is located in Cerro Gordo, Illinois, within Piatt County. It covers approximately 39.04 square miles and serves a population of 1,579 residents. This is a standard ZIP code in the Central (CT) timezone, served by area code 217.

About ZIP code 61818

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 $113,600. Owner-occupancy is high at 77%, well above the national average.

Median household income is $61,389. 34% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 22 minutes is near the national average.

College attainment at 16% is below the national average, consistent with a trades and production-oriented local economy.

Overall, ZIP code 61818 reflects a community defined by a trades-oriented workforce, high homeownership, and a significant Social Security-dependent population.

1,579
population
39.04
sq mi land
Standard
ZIP type
Central (CT)
timezone
61818 ZIP code map
Cities in ZIP code 61818

Below are the cities the US Postal Service accepts for ZIP code 61818. Using any city not on this list may result in mail delivery delays.

City Status
Cerro Gordo Preferred
Nearby ZIP codes
62501 Argenta (6.5 mi) 62554 Oreana (8 mi) 61929 Hammond (8.2 mi) 61830 Cisco (8.3 mi) 61813 Bement (9 mi) 62549 Mt Zion (10.6 mi) 61937 Lovington (11.6 mi) 61925 Dalton City (11.7 mi) 62523 Decatur (12.4 mi) 61856 Monticello (13 mi) 62535 Forsyth (13.3 mi) 62521 Decatur (13.5 mi)
Demographics updated 05/2026
Population
Total population 1,579
Population density 40 / sq mi
State FIPS 17
County FIPS 147
Geography
Land area 39.04 sq mi
Water area 0.00 sq mi
Latitude 39.8846
Longitude -88.7239
Timezone Central (CT)
Area code 217
Total population by age
Gender
Race & ethnicity
Economics updated 05/2026
Household income
Income range This ZIP County avg State avg
Under $50k 42.1% 35.4% 37.2%
$50k – $100k 35.4% 32.0% 29.6%
$100k – $200k 21.4% 27.9% 24.4%
Over $200k 1.1% 4.6% 8.8%

Demographics & statistics

1,579
Population
40
People per sq mi
38.4
Median age
$61,389
Median household income
$31,403
Per capita income
$113,600
Median home value
$820
Median monthly rent
77.3%
Home ownership
11.1%
Poverty rate
10.5%
Unemployment
542
Housing units
15.9%
Bachelor's or higher

Age distribution

Male Female
55
Under 5
63
43
5–9
50
62
10–14
71
42
15–19
47
46
20–24
52
87
25–34
99
82
35–44
93
99
45–54
114
25
55–59
29
66
60–64
76
50
65–74
57
59
75–84
67
21
85+
24
← Male
Female →

Age summary

GroupCount%
Under 1840525.6%
18 and over1,17474.4%
65 and over27817.6%
Median age38.4 years

Race & ethnicity

White 92.2%
Two or more races 4.7%
Hispanic or Latino 1.9%
Other race 1.2%
GroupCount%
White1,48492.2%
Two or more races754.7%
Hispanic or Latino311.9%
Other race201.2%

Household income

Income range This ZIP County avg State avg
Under $50k 42.1% 35.4% 37.2%
$50k – $100k 35.4% 32.0% 29.6%
$100k – $200k 21.4% 27.9% 24.4%
Over $200k 1.1% 4.6% 8.8%
Under $10k 5.6%
$10k–$15k 5.7%
$15k–$25k 4.7%
$25k–$35k 2.0%
$35k–$50k 21.4%
$50k–$75k 18.5%
$75k–$100k 15.1%
$100k–$150k 19.1%
$150k–$200k 4.2%
$200k+ 3.8%
Range% of households
Under $10k5.6%
$10k–$15k5.7%
$15k–$25k4.7%
$25k–$35k2.0%
$35k–$50k21.4%
$50k–$75k18.5%
$75k–$100k15.1%
$100k–$150k19.1%
$150k–$200k4.2%
$200k+3.8%
Median income$61,389

Housing

Home values

Under $50k 7.4%
$50k–$100k 31.4%
$100k–$150k 43.1%
$150k–$200k 8.6%
$200k–$300k 9.0%
$1M+ 0.6%

Housing overview

MetricValue
Median home value$113,600
Median rent / month$820
Owner occupied77.3%
Renter occupied22.7%
Vacant4.2%
Single-family detached93.2%
Large apartment buildings0.0%
Mobile homes0.4%
Median rooms6.1
Avg household size (owned)2.33

Year built

Era%
2020 or later0.0%
2010–20190.0%
2000–20092.6%
1990–19991.2%
1980–19896.8%
1970–197925.7%
1960–19698.7%
1950–195921.1%
1940–19493.9%
1939 or earlier30.2%

Bedrooms

Size% of units
No bedroom (studio)0.0%
1 bedroom4.8%
2 bedrooms30.4%
3 bedrooms50.5%
4 bedrooms10.0%
5+ bedrooms4.3%

Vehicles per household

Vehicles% of households
No vehicle2.1%
1 vehicle34.3%
2 vehicles38.7%
3 or more24.8%

Heating fuel

Fuel type%
Utility gas73.0%
Electricity16.6%
Propane / LP gas8.1%
No fuel used1.7%

Households & families

Household typeCount%
Married-couple family29043.7%
Cohabiting couple426.3%
Male householder, no spouse13620.5%
Female householder, no spouse19629.5%
Households with children under 1819128.8%
Households with seniors (65+)22033.1%
Average household size2.38

Marital status

StatusMaleFemale
Never married33.8%19.1%
Married44.2%47.0%
Separated0.0%4.8%
Widowed2.3%12.6%
Divorced19.8%16.6%

Education

Less than 9th grade 0.3%
Some HS, no diploma 3.2%
HS graduate 39.2%
Some college, no degree 27.7%
Associate's degree 13.6%
Bachelor's degree 12.2%
Graduate / professional 3.7%
Metric%
HS diploma or higher96.5%
Bachelor's or higher15.9%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool3810.1%
Kindergarten246.4%
Elementary school19351.3%
High school6016.0%
College / grad school6116.2%

Employment

Industry of employment

Education & healthcare 29.9%
Manufacturing 16.6%
Retail trade 14.5%
Construction 9.2%
Transportation & utilities 7.4%
Professional & management 6.1%
Finance & real estate 4.3%
Public administration 3.6%
Wholesale trade 3.1%
Arts, food & hospitality 2.1%
Other services 1.8%
Agriculture & mining 1.3%
Information 0.3%

Occupation

Category%
Management, business & arts45.3%
Service11.4%
Sales & office20.6%
Natural resources & construction12.3%
Production & transportation10.5%

Employment type

Type%
Private sector80.2%
Government14.2%
Self-employed5.6%
Unpaid family workers0.0%

Commute

Method%
Drive alone88.5%
Carpool4.2%
Public transit0.0%
Walk0.0%
Work from home6.4%
Other means0.9%
Avg commute (minutes)21.7

Poverty

All people 11.1%
Under 18 years 7.2%
18 and over 12.5%
Married-couple families 1.0%
Female-led households 27.6%

Income support

Source% of households
Social Security34.2%
Retirement income28.8%
Supplemental Security2.4%
Cash public assistance1.8%
Food stamps / SNAP9.5%

Health indicators

Condition%
Obesity34.0%
High blood pressure30.9%
High cholesterol34.8%
Diabetes8.8%
Heart disease5.8%
Stroke2.7%
Asthma9.4%
Arthritis25.4%
Kidney disease2.6%
Pulmonary disease6.5%
Cancer6.8%
Behavior / access%
Smoking17.5%
Binge drinking16.4%
No physical activity22.2%
Less than 7 hrs sleep31.0%
Depression17.8%
Fair or poor health12.2%
Poor mental health12.7%
Poor physical health9.0%
No health insurance9.6%
Visited doctor (checkup)76.3%
Visited dentist66.6%
Cholesterol screening90.0%
Teeth loss12.2%

Veterans & disability

VeteransCount%
Civilian veterans907.8%
Disability%
Any disability20.6%
Under 187.4%
18–64 years16.2%
65 and over54.0%

Health insurance coverage

Type%
Private insurance80.2%
Public insurance33.9%
No insurance4.5%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only1,46192.5%
Spanish60.4%
Other Indo-European00.0%
Asian & Pacific Islander60.4%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)1,57499.7%
Born in same state1,55498.4%
Born in different state1,37587.1%
Foreign born201.3%
Naturalized citizen50.3%
Not a US citizen00.0%

Ancestry

AncestryCount%
French24515.5%
Italian20613%
Arab1368.6%
AncestryCount%
English362.3%
Irish161%
German30.2%

Technology access

Metric% of households
Computer access42.1%
Internet access87.5%

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

Frequently asked questions about ZIP code 61818

What city is ZIP code 61818 in?

ZIP code 61818 is primarily assigned to Cerro Gordo, Illinois.

What county is ZIP code 61818 in?

ZIP code 61818 falls within Piatt County, Illinois.

What is the typical home value in ZIP code 61818?

The median home value in ZIP code 61818 is $113,600.

What is the population of ZIP code 61818?

ZIP code 61818 has an estimated population of 1,579 residents, with a density of 40 people per square mile.

What is the median household income in ZIP code 61818?

The median household income in ZIP code 61818 is $61,389, below the national median of ~$75,000.

What timezone is ZIP code 61818 in?

ZIP code 61818 observes the CST timezone.

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