ZIP code
54421
Colby, WI
54421 covers Colby in Clark County, with 3,724 people in the ACS 2023 estimate.
Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology
U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 54421. Methodology
ZIP code map of 54421

About ZIP code 54421
More enterprise fields
Commercial ZIP directory · not ACS
Commercial ZIP directory population_count for ZCTA 54421. Not ACS. Methodology
People in 54421
Race
- White3,112
- Black or African American11
- American Indian or Alaska Native21
- Asian13
- Other race300
- Two or more races194
Hispanic or Latino (any race): 467
Age
- Under 10556
- 10 to 19564
- 20 to 29384
- 30 to 39399
- 40 to 49382
- 50 to 59423
- 60 to 69449
- 70 to 79266
- 80 and older228
Income and housing in 54421
Education
- High school graduate83.2%
- Bachelor's degree13.7%
- Graduate degree2.9%
Places covering 54421
Cities and places — Population overlap
Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.
- Colby53.5%
- Abbotsford0.4%
ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
Counties — Population overlap
Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.
- Clark County58.4%
- Marathon County41.6%
ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology
46.2% of this ZIP is outside city limits (a real overlap row, not missing data).
Population history for 54421
Hover the chart or read the table below (Year | ACS | IRS).
| Year | ACS population | IRS population |
|---|---|---|
| 2005 | 3,122 | |
| 2006 | 3,129 | |
| 2007 | 3,399 | |
| 2008 | 3,322 | |
| 2009 | 3,274 | |
| 2010 | 3,456 | |
| 2011 | 3,122 | 3,441 |
| 2012 | 3,090 | 3,360 |
| 2013 | 3,134 | 3,320 |
| 2014 | 3,237 | 3,360 |
| 2015 | 3,270 | 3,230 |
| 2016 | 3,419 | 3,130 |
| 2017 | 3,460 | 3,170 |
| 2018 | 3,551 | 3,110 |
| 2019 | 3,669 | 3,070 |
| 2020 | 4,330 | 3,160 |
| 2021 | 3,834 | 3,100 |
| 2022 | 3,831 | 3,160 |
| 2023 | 3,724 |
ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.
ZIP codes near 54421
12 nearest ZIP centroids (any distance)
- 54488Unity4.6 miPop 1,144 · Income $66,607
- 54405Abbotsford5.0 miPop 2,779 · Income $65,430
- 54425Dorchester8.1 miPop 1,844 · Income $61,500
- 54422Curtiss9.5 miPop 1,386 · Income $65,809
- 54479Spencer10.2 miPop 3,592 · Income $79,542
- 54480Stetsonville11.0 miPop 1,445 · Income $57,250
- 54484Stratford12.1 miPop 5,543 · Income $69,341
- 54460Owen12.6 miPop 2,636 · Income $65,260
- 54446Loyal13.4 miPop 3,446 · Income $72,422
- 54426Edgar14.3 miPop 4,359 · Income $78,380
- 54411Athens17.0 miPop 5,053 · Income $78,646
- 54404Marshfield17.3 miPop — · Income —
ZIP centroids within 2 miles
No other ZIP codes within 2 miles of 54421, measured by Census internal-point centroids. Try a wider radius.
ZIPs within 2 miles of this place
Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.
ZIP code 54421 FAQ
- What city is ZIP code 54421 in?
- 54421 is in Colby, WI.
- What county is 54421 in?
- 54421 is in Clark County.
- What is the median household income in 54421?
- The median household income in 54421 is $59,738.
- Which ZIP codes are near 54421?
- Use the radius tool on this page to list ZIP codes within a chosen distance of 54421.