What city is ZIP code 54479?

ZIP code 54479 is in Spencer, WI (Marathon County).

What county is ZIP code 54479 in?

ZIP code 54479 is mostly in Marathon County, Wisconsin.

How many people live in ZIP code 54479?

About 3,630 people live in the 54479 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 54479

Spencer, WI, Marathon County

Population

3,630

Land area

76.8sq mi

People per sq mi

City

Spencer

ZIP 54479 and nearby ZIP codes

Full map

ZIP 54479 at a glance

ZIP 54479 (Spencer) is 57% less dense than Wisconsin as a whole.
The median household income is $77,371, close to the Wisconsin median.
A typical owner-occupied home is valued at $182,800 (31% below Wisconsin) and median rent is $577 a month.

Local data for ZIP 54479

Counts from official public data

Housing and community stats

ZIP 54479, American Community Survey 2020-2024

Full profile

Median household income

$77,371

Poverty rate

5.0%

Median home value

$182,800

Prices -4.5% in a year

Median rent

$577/mo

Homeownership

81.9%

Bachelor's or higher

15.8%

Median age

37.7

Average commute

18.7 min

Income, education and commute

Economy and federal money

Businesses, pandemic loans and political donations

Details

Business establishments

ZIP Business Patterns 2023

Employees

1,373

$72.5M annual payroll

PPP loans

$5.1M

146 loans

Campaign donations

$5,849

15% D, 14% R, 2026 cycle

PPP loans in this ZIP

Environment and hazard risk

ZIP 54479, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: cold wave

Storm events since 1996

753

Countywide, mostly hail

Flood insurance policies

199

0.4% of homes, county

July high / Jan low

80° / 7°F

24.9 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 54479, CDC PLACES estimates

All 40 measures

Obesity

37.3%

U.S. 33.3% +4.0 pts

Diabetes

10.9%

U.S. 12.1% -1.2 pts

Smoking

17.0%

U.S. 12.8% +4.2 pts

Uninsured (18-64)

9.2%

U.S. 11.1% -1.9 pts

Frequently asked questions

What city is ZIP code 54479?: ZIP code 54479 is in Spencer, WI (Marathon County).
What county is ZIP code 54479 in?: ZIP code 54479 is mostly in Marathon County, Wisconsin.
How many people live in ZIP code 54479?: About 3,630 people live in the 54479 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.