54421 ZIP Code, Colby, WI
54421 is a ZIP code in Colby, Wisconsin — mostly in Marathon County (55% of its land), with smaller parts in Clark County. It covers 70 square miles of land. The closest ZIP codes are 54488, 54405 and 54425. 3,468 people live here in 1,170 households. It is rural, with fewer than 100 people per square mile, and owners and renters are mixed (68% own). Median household income is $60,820, below the Wisconsin median of $77,485.
Quick facts
- Mailing city: Colby, WI
- County: Marathon County
- Land area: 70 sq mi
- Population: 3,468
- Median household income: $60,820
Key figures
| Measure | Value |
|---|---|
| Residents | 3,468 |
| Households | 1,170 |
| Median household income | $60,820 |
| Income per person | $28,436 |
| Median age | 36.8 |
| Homeowners | 68.3% |
| Median home value | $194,500 |
| Median rent | $844 |
| Bachelor's degree or higher | 13.9% |
| Average commute (minutes) | 18.7 |
| Households with kids under 18 | 38.6% |
| Moved in the past year | 9.7% |
| Below the poverty line | 13.7% |
| Broadband internet | 82.9% |
| Speak a non-English language at home | 20.7% |
Household income
| % of households | Value |
|---|---|
| <$10K | 5.1% |
| $10–15K | 4.3% |
| $15–25K | 7.4% |
| $25–35K | 9.4% |
| $35–50K | 14.8% |
| $50–75K | 21.5% |
| $75–100K | 9.7% |
| $100–150K | 18.1% |
| $150–200K | 5.9% |
| $200K+ | 3.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 13.1% |
| 10–19 | 20.0% |
| 20–24 | 5.9% |
| 25–34 | 8.9% |
| 35–44 | 11.9% |
| 45–54 | 9.9% |
| 55–64 | 12.5% |
| 65–74 | 8.9% |
| 75+ | 8.8% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 38.7% |
| Owned outright | 27.3% |
| Rented | 30.4% |
| Vacant | 3.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 75.9% |
| Townhome | 0.4% |
| 2–4 units | 7.2% |
| 5–19 units | 9.9% |
| 20+ units | 3.0% |
| Mobile / other | 3.5% |
Businesses in 54421
69 business establishments with 951 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 12
- Retail Trade: 11
- Other Services (except Public Administration): 9
- Accommodation and Food Services: 7
- Construction: 5
- Manufacturing: 5
- Transportation and Warehousing: 4
- Wholesale Trade: 3
EDDM carrier routes
See every USPS carrier route in 54421 with residential and business mailbox counts on the route map. Open the EDDM route map.
Nearby ZIP codes
- 54488 — Unity village, WI (4.6 mi)
- 54405 — Abbotsford city, WI (5 mi)
- 54425 — Dorchester village, WI (8.1 mi)
- 54422 — Curtiss village, WI (9.5 mi)
- 54479 — Spencer village, WI (10.2 mi)
- 54480 — Stetsonville village, WI (11 mi)
- 54484 — Stratford village, WI (12.1 mi)
- 54460 — Owen city, WI (12.6 mi)
Areas that include 54421
- Abbotsford, WI ZIP codes — 2 ZIP codes
- Colby, WI ZIP codes — 1 ZIP code
- Clark County ZIP codes — 19 ZIP codes
- Marathon County ZIP codes — 25 ZIP codes
- Wisconsin ZIP code data
Where it ranks
- No. 1 of 24: highest share of households with children in Marathon County
- No. 8 of 24: highest share of residents who moved in during the past year in Marathon County
- No. 3 of 24: lowest median age in Marathon County
Mail every home in 54421
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 54421, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 54421 in?
- 54421 is a Colby, WI mailing address. By land area, 2% lies inside Colby; the rest is outside any Census-defined city or community.
- What county is 54421 in?
- 54421 is mostly in Marathon County (55% of its land), with smaller parts in Clark County.
- What is the population of 54421?
- About 3,468 people (±384), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 3,651.
- What is the median household income in 54421?
- $60,820 (±$4,257), compared with $77,485 for Wisconsin as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 54421?
- EDDM2GO's stored route library does not include 54421 yet. The EDDM route map loads its carrier routes and mailbox counts when you search the ZIP code.
- What ZIP codes are near 54421?
- The closest, measured center to center: 54488 (4.6 mi, Unity), 54405 (5 mi, Abbotsford), 54425 (8.1 mi, Dorchester), 54422 (9.5 mi, Curtiss), 54479 (10.2 mi, Spencer) and 54480 (11 mi, Stetsonville).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.