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
- $60,820
- Median income
- $194,500
- Median home value
- 13.9%
- Bachelor's or higher
The verdict
Colby pairs a below-median household income with below-median home values, in a rural, homeowner-dominated area.
- 30th pct
- household income, US ZIPs
- 42th 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 is classified by USPS as a standard delivery area and covers roughly 183.8 square miles in Colby, Clark County, Wisconsin. The area is home to 3,455 residents, producing a population density of 19 people per square mile, and falls within the Chicago time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 54421 against Wisconsin and the nation.
On the economic side, the median household income for ZIP 54421 sits at $60,820 (22% below the Wisconsin average), while per-capita income is $28,436. The poverty rate stands at 13.7% and the unemployment rate at 1.4%. On housing, the median home value is $194,500 (22% below the state average) with median rent at $844 per month, and 68.3% of occupied units are owner-occupied, a direct signal of whether 54421 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 13.9% of adults hold a bachelor's degree or higher, the median age is 36.8, and the average commute is 19 minutes. We also surface 4 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Clark County, so you can benchmark 54421 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 54421
Top 5 sectors by establishment count
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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + 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
$28,436
Per Capita Income
13.7%
Poverty Rate
1.4%
Unemployment Rate
18.7 min
Mean Commute Time
How ZIP 54421 ranks nationally
Household income vs. every US ZIP code
Median household income — the full national distribution, with this ZIP marked
$60,820 30th percentile higher than 30% of 30,318 US ZIPs
Each bar is a $20K-wide band; taller bars hold more US 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?
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
$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.
More ZIP Codes in Clark County
Related Areas
Frequently Asked Questions
What county is ZIP code 54421 in? ▼
What is the population of ZIP code 54421? ▼
What is the median household income in ZIP 54421? ▼
What is the average home value in ZIP 54421? ▼
What is the demographic makeup of ZIP 54421? ▼
How many businesses are in ZIP code 54421? ▼
What are the main industries in ZIP code 54421? ▼
What is the education level in ZIP code 54421? ▼
What is the average commute time in ZIP 54421? ▼
What percentage of residents own vs. rent in ZIP 54421? ▼
What is the poverty rate in ZIP code 54421? ▼
ZIP Code Research Guides
Official Data Resources for Colby, WI
Verify and explore additional data for this area using these official government sources.
Read our methodology to see how this data is sourced, computed, and verified.