Colby, WI 54421 ZIP Code Profile

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Colby, WI

ZIP Code 54421: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Colby, WI 54421

  • ZIP Code Type: STANDARD
  • County: Clark County
  • Centroid: Latitude 44.912, Longitude -90.32
  • Time Zone: Central Time Zone (UTC -6 hours)
  • Observes DST: Yes

ZIP Code 54421 has segments in 2 Counties (Clark, Marathon).

  • Businesses Addresses: 78
  • PO Box Addresses: 110
  • Residential Addresses: 1,226
    • Multi-Family Addresses: 69
    • Single Family Addresses: 1,157

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


54421 ZIP Code Map

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Colby, WI 54421 Data & Demographics (As of July 1, 2017)


Total Population 3,553
Daytime Population: Workers 1,438
Daytime Population: Residents 1,803
Total Daytime Population (TDP) 3,241
Ratio TDP/Total Population1 0.91
Population in Households 3,431
Population in Familes 2,895
Population in Group Qrtrs 122
Population Density2 51
Diversity Index3 40


Median Household Income $48,943
Average Household Income $61,004
Per Capita Income $22,780


Total Housing Units 1,361 (100%)
Owner Occupied HU 962 (70.7%)
Renter Occupied HU 336 (24.7%)
Vacant Housing Units 63 ( 4.6%)
Median Home Value $114,076
Average Home Value $150,910


Total Households 1,298
Average Household Size 2.64
Family Households 923
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.59% 0.56%
Households 0.64% 0.58%
Families 0.53% 0.51%
Median Household Income   2.68%
Per Capita Income   3.12%

Colby, WI 54421 - Peer Comparisons by Rank and Percentile

The table below compares 54421 to the other 769 ZIP Codes in Wisconsin by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 337 56th
Population Density # 395 49th
Diversity Index # 68 91st
Median Household Income # 570 26th
Per Capita Income # 686 11th

Additional comparisons and rankings can be made with a VERY EASY TO USE Wisconsin Census Data Comparison Tool.

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