What city is ZIP code 61818?

ZIP code 61818 is in Cerro Gordo, IL (Piatt County).

What county is ZIP code 61818 in?

ZIP code 61818 is mostly in Piatt County, Illinois.

How many people live in ZIP code 61818?

About 1,560 people live in the 61818 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 61818

Cerro Gordo, IL, Piatt County

Population

1,560

Land area

39sq mi

People per sq mi

City

Cerro Gordo

ZIP 61818 and nearby ZIP codes

Full map

ZIP 61818 at a glance

ZIP 61818 (Cerro Gordo) is 83% less dense than Illinois as a whole.
The median household income is $84,375, close to the Illinois median.
A typical owner-occupied home is valued at $116,100 (56% below Illinois) and median rent is $846 a month.

Local data for ZIP 61818

Counts from official public data

Housing and community stats

ZIP 61818, American Community Survey 2020-2024

Full profile

Median household income

$84,375

Poverty rate

9.5%

Median home value

$116,100

Prices +3.9% in a year

Median rent

$846/mo

Homeownership

82.1%

Bachelor's or higher

20.1%

Median age

42.5

Average commute

22.1 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

163

$7.5M annual payroll

PPP loans

$2.1M

40 loans

Campaign donations

$1,768

0% D, 6% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 61818, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Very Low

Top: drought

Storm events since 1996

312

Countywide, mostly thunderstorm wind

Flood insurance policies

0.4% of homes, county

July high / Jan low

86° / 20°F

36.4 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 61818, CDC PLACES estimates

All 40 measures

Obesity

36.7%

U.S. 33.3% +3.4 pts

Diabetes

11.1%

U.S. 12.1% -1.0 pts

Smoking

14.0%

U.S. 12.8% +1.2 pts

Uninsured (18-64)

6.4%

U.S. 11.1% -4.7 pts

Frequently asked questions

What city is ZIP code 61818?: ZIP code 61818 is in Cerro Gordo, IL (Piatt County).
What county is ZIP code 61818 in?: ZIP code 61818 is mostly in Piatt County, Illinois.
How many people live in ZIP code 61818?: About 1,560 people live in the 61818 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.