Colby, WI · standard
ZIP Code 54421
Clark County, Wisconsin - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 3,455
- 19/sq mi Moderate-density area
- $60,820
- Median income Below-median income area
- $194,500
- Median home value Near-median home value
- 13.9%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Colby pairs a below-median household income with below-median home values, in a rural, homeowner-dominated area.
- 30th pct
- household income, US ZIPs
- 42nd pct
- home value, US ZIPs
- 19
- people per sq mi
- 68%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 54421 against every reporting US ZIP.
ZIP code 54421 covers 183.8 square miles in Colby, Clark County, Wisconsin (a standard USPS delivery area), with a modest 3,455 residents on file, a density of 19 people per square mile, in the Chicago time zone.
ZIP 54421 reports a modest median household income of $60,820 (22% below the average Wisconsin ZIP), while per-capita income is $28,436. The poverty rate is 13.7%, with unemployment at 1.4%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $194,500 (22% below the average Wisconsin ZIP), and median rent is $844; owner occupancy is 68.3%.
Formal educational attainment runs low here: just 13.9% of adults hold a bachelor's degree or higher, the median age is 36.8, and the average commute is 19 minutes. The page also surfaces 4 ZIP codes within roughly 10 miles and 6 more in Clark County, so 54421 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 54421
Top 5 sectors by establishment count in Colby, WI
Which industries have the most business establishments in ZIP 54421.
- Health care and social assistance
Health care and social assistance
12 establishments
- Retail trade
Retail trade
11 establishments
- Other services (except public administration)
Other services (except public administration)
9 establishments
- Accommodation and food services
Accommodation and food services
7 establishments
- Construction
Construction
5 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 54421, Colby, WI · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
3,455
Population
183.8
Area (sq mi)
19
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 54421?
36.8
Median Age
51.2%
Male
48.8%
Female
8.2%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$60,820
Median Household Income
-22% vs state ZIP avg
$28,436
Per Capita Income
13.7%
Poverty Rate
1.4%
Unemployment Rate
18.7 min
Mean Commute Time
How ZIP 54421 ranks among Wisconsin ZIPs
Colby, WI household income vs. every Wisconsin ZIP code
Median household income among 755 reporting Wisconsin ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$60,820 15th percentile higher than 15% of 755 Wisconsin ZIPs
Each bar is a $20K-wide band; taller bars hold more Wisconsin ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
1,215housing units
1,215
Total Housing Units
1,170
Occupied Units
45
Vacant Units
2.86
Avg Household Size
Occupancy Type
$194,500
Median Home Value
-22% vs state ZIP avg
$844
Median Rent
1973
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What businesses operate in this ZIP?
Census Bureau data shows 69 business establishments in ZIP 54421, employing approximately 951 people with a combined annual payroll of $47,520,000.
69
Businesses
951
Employees
$47.5M
Annual Payroll
10
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Health care and social assistance | 12 | 17.4% |
| Retail trade | 11 | 15.9% |
| Other services (except public administration) | 9 | 13.0% |
| Accommodation and food services | 7 | 10.1% |
| Construction | 5 | 7.3% |
| Manufacturing | 5 | 7.3% |
| Transportation and warehousing | 4 | 5.8% |
| Wholesale trade | 3 | 4.3% |
| Finance and insurance | 3 | 4.3% |
| Professional, scientific, and technical services | 3 | 4.3% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 54421 vs 54405 →
ZIP 54421 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 54479
Spencer (54479)
4,119 residents
- 54421
Colby (54421)
3,455 residents
- 54405
Abbotsford (54405)
3,032 residents
- 54425
Dorchester (54425)
2,036 residents
- 54488 1,262
Unity (54488)
1,262 residents
What this shows Among its immediate neighbors, ZIP 54421 ranks #2 by population - useful context the national average alone can't give.
ZIP 54421 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 54479
Spencer (54479)
$77,371 median income
- 54405
Abbotsford (54405)
$69,659 median income
- 54488
Unity (54488)
$63,571 median income
- 54425
Dorchester (54425)
$63,424 median income
- 54421
Colby (54421)
$60,820 median income
What this shows By household income, ZIP 54421 ranks #5 of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 54421, both outside WI so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (3,455 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Clark County
Related Areas
Frequently Asked Questions
What county is ZIP code 54421 in?
ZIP code 54421 (Colby) is located in Clark County, Wisconsin. Clark County contains multiple ZIP codes, see the full list at /counties/clark-wi.
What is the population of ZIP code 54421?
ZIP code 54421 in Colby, WI has a population of 3,455 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 54421?
The median household income in ZIP 54421 is $60,820, which is 20% below the national average of $76,288.
What is the average home value in ZIP 54421?
The median home value in ZIP 54421 is $194,500, which is 30% below the national average of $278,155.
What is the demographic makeup of ZIP 54421?
The largest racial group in ZIP 54421 is White at 85.6%. Hispanic or Latino residents make up 15.8% of the population.
How many businesses are in ZIP code 54421?
ZIP code 54421 has 69 business establishments employing approximately 951 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 54421?
The top industries by establishment count in ZIP 54421 are: Health care and social assistance (12), Retail trade (11), Other services (except public administration) (9). There are 10 industry sectors represented in total.
What is the education level in ZIP code 54421?
In ZIP code 54421, 59.3% of residents aged 25+ have a high school diploma or higher, and 13.9% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 54421?
The mean commute time for workers in ZIP code 54421 is 18.7 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend less time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 54421?
In ZIP code 54421, approximately 68.3% of occupied housing units are owner-occupied and 31.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 54421?
The poverty rate in ZIP code 54421 is 13.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 54421's numbers, next.
- See how ZIP 54421 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Colby, WI ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.