Residential delivery area · Wisconsin
ZIP Code 54205: Casco, WI
ZIP code 54205 uses the postal name Casco, Wisconsin and lies mostly in Kewaunee County (98% of its land) with the rest in Door County (Census 2020 ZIP-county file). About 2,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $90,781 (Census Bureau, ACS 2020-2024). By Census place, 2% of its land lies in Casco; 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Casco · its only residential ZIP
- County
- Kewaunee County (98%); Door County (2%)
- Census places
- Casco
- Metro area
- Green Bay, WI
- House district
- WI-8 119th Congress
- State
- Wisconsin
- Time zone
- Central
- Land area
- 44.1 sq mi · 51 people per sq mi
Where is ZIP code 54205?
54205 centers on 44.611°, -87.632° and covers 44.1 square miles of land plus 0.0 of water. It borders 5 ZIP codes: 54217, 54201, 54213, 54204, 54216.
The map draws ZIP code areas only. For the streets inside 54205, 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 54205 compare with the rest of Kewaunee County?
| Measure | 54205 | In Kewaunee County | In WI |
|---|---|---|---|
| People (ACS 2020-2024) | 2,229 | 5th of 6 | 455th of 783 |
| Median household income | $91k | 3rd of 6 | 159th of 610 |
| Median home value | $253k | 3rd of 6 | 264th of 612 |
Its median household income is higher than in 74% 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 54205?
The 2020 Census counted 2,116 people in 54205; the ACS, which samples households over 2020-2024, estimates 2,229. Between the 2010 and 2020 censuses its population fell 2.8% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 2,229±262 (90% margin)
- 2020 Census count
- 2,116−2.8% since 2010 (2,177)
- Households
- 797
- Median age
- 42.8
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 54205?
Of the 2,229 people the ACS estimates in 54205, 22.6% are under 18 and 17.1% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (90.3%).
- Under 1822.6%
- 18 to 6460.3%
- 65 and older17.1%
- White, not Hispanic90.3%
- Hispanic or Latino5.3%
- Other or two or more2.3%
- Black, not Hispanic1.9%
- Asian, not Hispanic0.1%
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 54205 earn?
Median household income is $90,781 (ACS 2020-2024), the 3rd highest of the 6 ranked ZIP codes in Kewaunee County. It is not measurably different from 2015-2019 ($92,353 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $90,781±$12,155
- Income per person
- $41,207
- Below the poverty line
- 4.3%
- Unemployed (of the labor force)
- 1.2%
- Adults 25+ with a bachelor's degree
- 19.7%
- Adjusted gross income per tax return, 2022
- $75,9861,080 returns; wages 67% 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 54205?
FHFA's house price index for 54205, built from repeat sales and appraisals of the same homes, rose 105% from 2015 to 2025 and rose 65% from 2020 to 2025, and moved −0.8% in 2025.
- Median home value (owners' estimate)
- $252,900
- Median gross rent
- $1,031
- Homes owned by their occupants
- 94.7%
- Housing units
- 825
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 54205?
44 business establishments had a location in this ZIP code in 2023, 1 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction8
- Accommodation and food services5
- Other services (except public administration)5
- Retail trade4
- Professional, scientific, and technical services4
- Transportation and warehousing3
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 54205?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 54217 | Luxemburg | 8,022 | $90k | 6.0 mi |
| 54201 | Algoma | 5,209 | $68k | 7.3 mi |
| 54213 | Forestville | 1,395 | $97k | 7.8 mi |
| 54204 | Brussels | 2,139 | $80k | 10.1 mi |
| 54216 | Kewaunee | 6,075 | $84k | 12.3 mi |
| 54229 | New Franken | 4,329 | $97k | 9.7 mi (near) |
| 54311 | Green Bay | 37,879 | $85k | 15.6 mi (near) |
| 54302 | Green Bay | 30,333 | $59k | 18.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.