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: 79
  • PO Box Addresses: 105
  • Residential Addresses: 1,270
    • Multi-Family Addresses: 72
    • Single Family Addresses: 1,198

The ZIP Code maps and database are updated 4 times per year.
Database updated: August 1, 2019, Maps updated: May 8, 2019.

Jump to... (On This Page!)
  1. 54421 2019 Demographic Data
  2. Growth Rates for 54421 (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Wisconsin Research Tools (Easy Tools & Current Data)
  3. Wisconsin Data Comparison Tool - 2019 Demographics

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Boundary Maps, Demographic Data, School Zones Review maps and data for the neighborhood, city, county, ZIP Code, and school zone. July 1, 2019, data includes home values, household income, percentage of homes owned, rented or vacant, etc.


Colby, WI 54421 Data & Demographics (As of July 1, 2019)


Total Population 3,529
Population in Households 3,404
Population in Familes 2,864
Population in Group Qrtrs 125
Population Density2 53
Diversity Index3 43


Median Household Income $52,880
Average Household Income $66,597
Per Capita Income $24,401


Total Housing Units 1,347 (100%)
Owner Occupied HU 979 (72.7%)
Renter Occupied HU 312 (23.2%)
Vacant Housing Units 56 ( 4.2%)
Median Home Value $128,239
Average Home Value $168,948


Total Households 1,291
Average Household Size 2.64
Family Households 914
Average Family Size 3
  1. Demographics are point estimates for July 1st of the current year and each for the forecast years. See References for more information.
  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.


2010-2019 2019-2024
Population 0.64% 0.57%
Households 0.68% 0.6%
Families 0.57% 0.5%
Median Household Income   2.41%
Per Capita Income   2.99%

Colby, WI 54421 - Peer Comparisons by Rank and Percentile

The table below compares 54421 to the other 777 ZIP Codes in Wisconsin by rank and percentile using July 1, 2019 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 # 341 56th
Population Density # 394 49th
Diversity Index # 63 92nd
Median Household Income # 507 35th
Per Capita Income # 671 14th

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

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