What city is ZIP code 61360?

ZIP code 61360 is in Seneca, IL (LaSalle County).

What county is ZIP code 61360 in?

ZIP code 61360 is mostly in LaSalle County, Illinois.

How many people live in ZIP code 61360?

About 3,610 people live in the 61360 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 61360

Seneca, IL, LaSalle County

Population

3,610

Land area

47.4sq mi

People per sq mi

City

Seneca

ZIP 61360 and nearby ZIP codes

Full map

ZIP 61360 at a glance

ZIP 61360 (Seneca) is 67% less dense than Illinois as a whole.
The median household income is $95,093, 14% above the Illinois median of $83,390.
A typical owner-occupied home is valued at $258,200 and median rent is $1,159 a month.

Local data for ZIP 61360

Counts from official public data

Housing and community stats

ZIP 61360, American Community Survey 2020-2024

Full profile

Median household income

$95,093

Poverty rate

17.7%

Median home value

$258,200

Prices -7.3% in a year

Median rent

$1,159/mo

Homeownership

78.0%

Bachelor's or higher

16.0%

Median age

37.9

Average commute

27.0 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

512

$26.1M annual payroll

PPP loans

$3.5M

79 loans

Campaign donations

$2,710

11% D, 30% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 61360, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: cold wave

Storm events since 1996

825

Countywide, mostly thunderstorm wind

Flood insurance policies

222

0.5% of homes, county

July high / Jan low

84° / 14°F

39.0 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 61360, CDC PLACES estimates

All 40 measures

Obesity

37.5%

U.S. 33.3% +4.2 pts

Diabetes

11.2%

U.S. 12.1% -0.9 pts

Smoking

15.5%

U.S. 12.8% +2.7 pts

Uninsured (18-64)

7.7%

U.S. 11.1% -3.4 pts

Frequently asked questions

What city is ZIP code 61360?: ZIP code 61360 is in Seneca, IL (LaSalle County).
What county is ZIP code 61360 in?: ZIP code 61360 is mostly in LaSalle County, Illinois.
How many people live in ZIP code 61360?: About 3,610 people live in the 61360 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.