Colby City (Marathon County) is a city in Marathon County, Wisconsin, home to about 691 people across 0.9 square miles. It has no ZIP code of its own: it’s part of 54421.
Homes sold for a median of $114 per square foot in the three months ending August 2026, a seller’s market.
Population691785 per sq mi
Median home value$168,100Census, as estimated by owners
Price per sq ft$114Sold homes, 3 months to August 2026
Mostly Colby City (Clark County); part is in Colby City (Marathon County)
Each card is that ZIP code’s whole market, including any part outside Colby City (Marathon County). Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
The Colby City (Marathon County) guide is on the way
We’re writing up Colby City (Marathon County)’s story and what everyday life there is like, for people thinking about moving in.
History
What it’s like to live there
Getting around
Things to do
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Around Colby City (Marathon County)
Distances
Nearest major airport
Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field (MSP)142 miles away
Closer regional airport
Central Wisconsin Airport (CWA)33 miles away
Nearest city of 250,000+
Madison, WI133 miles away
Nearest city of 1 million+
Chicago, IL250 miles away
Straight-line distances from the center of Colby City (Marathon County); driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Population over time
Colby City (Marathon County) had 677 residents in the 2020 census, up 47% since 2000.
It’s the 1224th largest of 1,889 towns in Wisconsin by population.
Marathon County grew from 43,256 residents in 1900 to 138,013 in 2020.
Marathon County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Weather by month
Average highs peak around 79°F in summer, and winter lows average 2°F. About 34.4 inches of rain and melted snow fall in a typical year, with about 51 inches of snow.
Source: NOAA 1991–2020 climate normals, Owen 1e, WI weather station (12 miles away).
Jobs in Marathon County
65,770 jobs at 3,436 businesses in Marathon County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Health care
23 doctors and other health care providers list an office in Colby City (Marathon County).
Marshfield Medical CenterGeneral hospital · emergency room · CMS rating 1 of 5 · Marshfield17.6 miles
Marshfield Medical Center - NeillsvilleCritical access hospital · emergency room · Neillsville28.4 miles
Providers with an office here
Primary care doctors
4
Nurse practitioners and physician assistants
6
Physical and occupational therapists
12
Chiropractors
1
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Schools in Colby City (Marathon County)
Public schools here are run by Colby School District. Check each district’s attendance zones for a specific address.
Public schools(4)
School
Grades
Students
Type
Distance
Little Stars Pre-SchoolColby
Pre-K
37
Public
0.6 mi
Colby ElementaryColby
K–5
354
Public
0.6 mi
Colby MiddleColby
6–8
204
Public
0.6 mi
Colby HighColby
9–12
306
Public
0.6 mi
Private schools(2)
School
Grades
Students
Affiliation
Distance
St Mary SchoolColby
Pre-K–8
75
Roman Catholic
0.4 mi
Chickadee Hollow Mennonite SchoolColby
1–8
33
Mennonite
3.4 mi
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.