Walworth County · Wisconsin
ZIP code 53121
- Population
- 18,640
- Median income
- $83,635
- Median home
- $287,900
- Sales tax
- 5%
ZCTA residents
Household, past 12 months
Owner-occupied value
Wisconsin state rate
Quick answer
ZIP 53121 sits in Walworth County, Wisconsin and is home to 18,640 people. Median household income is $83,635, the median home is worth $287,900 and median gross rent is $1,031. 73.2% of households own their home, and purchases are taxed at 5% (Wisconsin state rate).
- County
- Walworth County
- State
- Wisconsin (WI)
- Area codes
- Not published
- Metro area
- Outside covered metros
FIPS 55127
783 ZIPs covered
No NANPA match for this ZIP
Rate jurisdiction used for tax
The numbers for 53121
American Community Survey 2019-2023 ACS 5-year estimates for this ZCTA.
- Population
- 18,640ZIP 53121 residents
- Median household income
- $83,635Past 12 months, inflation adjusted
- Median home value
- $287,900Owner-occupied units
- Median gross rent
- $1,031Rent plus utilities, monthly
- Median age
- 43.1 yrsAll residents
- Homeownership rate
- 73.2%Owner-occupied households
Sales tax in 53121
What a purchase inside this ZIP costs at checkout.
Wisconsin levies 5% statewide, and counties, cities and special districts inside this ZIP can add their own local rate on top. Check the county page for the local component before you quote a price.
Affordability in this ZIP
Derived from the Census medians above — indicative, not an offer.
A rent burden above 30% is the federal threshold for cost-burdened households, and a price-to-income multiple above 4× is generally considered a stretched housing market. The mortgage figure is principal and interest only — taxes, insurance and HOA dues are extra.
How 53121 compares
ZIP 53121 against the median ZIP in Walworth County and across Wisconsin.
| Measure | ZIP 53121 | County median | State median | vs state |
|---|---|---|---|---|
| Median household income | $83,635 | $77,500 | $73,420 | +14% |
| Median home value | $287,900 | $263,150 | $214,300 | +34% |
| Median gross rent | $1,031 | $1,022 | $900 | +15% |
| Population | 18,640 | 3,749 | 2,792 | +568% |
Medians are computed across the 14 ZIP areas in Walworth County and the 783 ZIP areas in Wisconsin.
Statewide rank
Where this ZIP places among all 783 Wisconsin ZIP areas.
- Income
- #226
- Home value
- #141
- Population
- #119
richer than 70% of 760 state ZIPs
above 81% of 762 state ZIPs
larger than 85% of 783 state ZIPs
Comparable ZIP codes
Wisconsin ZIP areas with almost the same household income.
Nearby ZIP codes
Other ZIP codes filed under Walworth County.
ZIP 53121 questions
Common questions about this ZIP code.
- Where is ZIP code 53121?
- ZIP 53121 lies mostly in Walworth County, Wisconsin. County assignment follows the largest share of land area, so a ZIP straddling a county line is filed under its dominant county.
- What sales tax do I pay in 53121?
- Wisconsin charges 5% statewide, plus any county, city or district rate that applies locally.
- Is 53121 expensive to live in?
- Median rent runs $1,031 a month, about 15% of median household income, and the median home is worth $287,900 — +34% against the typical Wisconsin ZIP.
- Is a ZCTA the same as a postal ZIP code?
- Not exactly. The Census builds ZIP Code Tabulation Areas from the ZIP codes of addresses inside each census block, so a ZCTA can differ slightly from the USPS delivery route of the same number, and PO-box-only ZIPs have no ZCTA at all.
Keep going
Related pages for this area.
Sources & transparency
- US Census Bureau, ACS 2019-2023 5-year estimates — 2019-2023 ACS 5-year — population, income, housing
- Census 2020 ZCTA-to-county relationship file — County assignment by largest land-area overlap
- Wisconsin Department of Revenue — Sales tax rates and local add-ons
Last reviewed December 2024. Figures are published for reference and can change; verify with the source agency before filing or contracting. How we build and check this data.