Residential delivery area · Wisconsin
ZIP Code 54423: Custer, WI
ZIP code 54423 uses the postal name Custer, Wisconsin and lies entirely in Portage County (Census 2020 ZIP-county file). About 2,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $113,690 (Census Bureau, ACS 2020-2024). By Census place, 5% of its land lies in Polonia (a census-designated place); 95% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2024
- ZBP2023
- IRS2022
- Town
- Custer · its only residential ZIP
- County
- Portage County
- Census places
- Polonia census-designated place
- Micro area
- Stevens Point-Plover, WI
- House district
- WI-3 119th Congress
- State
- Wisconsin
- Time zone
- Central
- Land area
- 48.3 sq mi · 50 people per sq mi
Where is ZIP code 54423?
54423 centers on 44.579°, -89.426° and covers 48.3 square miles of land plus 0.6 of water. It borders 4 ZIP codes: 54482, 54473, 54407, 54455.
The map draws ZIP code areas only. For the streets inside 54423, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 54423 compare with the rest of Portage County?
| Measure | 54423 | In Portage County | In WI |
|---|---|---|---|
| People (ACS 2020-2024) | 2,394 | 12th of 21 | 432nd of 783 |
| Median household income | $114k | 1st of 20 | 26th of 610 |
| Median home value | $329k | 1st of 20 | 115th of 612 |
Its median household income is higher than in 88% of U.S. residential ZIP codes, and it is denser than 42% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 54423?
The 2020 Census counted 2,349 people in 54423; the ACS, which samples households over 2020-2024, estimates 2,394. Between the 2010 and 2020 censuses its population grew 0.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,394±294 (90% margin)
- 2020 Census count
- 2,349+0.3% since 2010 (2,343)
- Households
- 926
- Median age
- 51.7
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 54423?
Of the 2,394 people the ACS estimates in 54423, 18.7% are under 18 and 20.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (99.1%).
- Under 1818.7%
- 18 to 6461.0%
- 65 and older20.3%
- White, not Hispanic99.1%
- Other or two or more0.5%
- Hispanic or Latino0.2%
- Asian, not Hispanic0.2%
- Black, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 54423 earn?
Median household income is $113,690 (ACS 2020-2024), the highest of the 20 ranked ZIP codes in Portage County. It is not measurably different from 2015-2019 ($106,595 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $113,690
- Income per person
- $49,194
- Below the poverty line
- 2.8%
- Unemployed (of the labor force)
- 0.3%
- Adults 25+ with a bachelor's degree
- 35.5%
- Adjusted gross income per tax return, 2022
- $98,2011,170 returns; wages 53% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 54423?
- Median home value (owners' estimate)
- $329,100
- Median gross rent
- $888
- Homes owned by their occupants
- 92.7%
- Housing units
- 948
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 54423?
38 business establishments had a location in this ZIP code in 2023, 11 fewer than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services6
- Construction5
- Other services (except public administration)5
- Manufacturing4
- Transportation and warehousing3
- Health care and social assistance3
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 54423?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 54482 | Stevens Point | 8,963 | $95k | 4.6 mi |
| 54473 | Rosholt | 2,472 | $80k | 6.1 mi |
| 54407 | Amherst Junction | 1,350 | $102k | 7.8 mi |
| 54455 | Mosinee | 19,025 | $96k | 18.2 mi |
| 54458 | Nelsonville | 133 | $58k | 8.2 mi (near) |
| 54481 | Stevens Point | 28,242 | $60k | 11.5 mi (near) |
| 54467 | Plover | 14,870 | $88k | 12.7 mi (near) |
| 54406 | Amherst | 4,040 | $78k | 13.0 mi (near) |
| 54945 | Iola | 3,470 | $70k | 14.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.