Residential delivery area · Wisconsin
ZIP Code 53545: Janesville, WI
ZIP code 53545 uses the postal name Janesville, Wisconsin and lies entirely in Rock County (Census 2020 ZIP-county file). About 25,000 people live there (Census Bureau, ACS 2020-2024), the 2nd most populous of Janesville's 3 residential ZIP codes. Median household income is $73,889 (Census Bureau, ACS 2020-2024). By Census place, 42% of its land lies in Janesville; 58% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Janesville · 3 residential ZIPs
- County
- Rock County
- Census places
- Janesville
- Metro area
- Janesville-Beloit, WI
- House districts
- WI-1 (79%), WI-2 (21%) 119th Congress, by share of land
- State
- Wisconsin
- Time zone
- Central
- Land area
- 22.5 sq mi · 1,098 people per sq mi
- PO Box ZIPs
- 53547 also use the name Janesville
Where is ZIP code 53545?
53545 centers on 42.739°, -89.040° and covers 22.5 square miles of land plus 0.4 of water. It borders 4 ZIP codes: 53548, 53563, 53546, 53534.
The map draws ZIP code areas only. For the streets inside 53545, 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 53545 compare with the rest of Janesville?
| Measure | 53545 | In Janesville | In Rock County | In WI |
|---|---|---|---|---|
| People (ACS 2020-2024) | 24,703 | 2nd of 3 | 3rd of 20 | 79th of 783 |
| Median household income | $74k | 3rd of 3 | 13th of 16 | 357th of 610 |
| Median home value | $221k | 3rd of 3 | 15th of 17 | 386th of 612 |
Its median household income is higher than in 53% of U.S. residential ZIP codes, and it is denser than 79% 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 53545?
The 2020 Census counted 23,318 people in 53545; the ACS, which samples households over 2020-2024, estimates 24,703. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 24,703
- 2020 Census count
- 23,318
- Households
- 10,909
- Median age
- 40.8
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 53545?
Of the 24,703 people the ACS estimates in 53545, 21.2% are under 18 and 18.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (83.3%).
- Under 1821.2%
- 18 to 6460.1%
- 65 and older18.7%
- White, not Hispanic83.3%
- Hispanic or Latino6.2%
- Black, not Hispanic4.5%
- Other or two or more4.2%
- Asian, not Hispanic1.8%
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 53545 earn?
Median household income is $73,889 (ACS 2020-2024), the 13th highest of the 16 ranked ZIP codes in Rock County.
- Median household income
- $73,889
- Income per person
- $40,317
- Below the poverty line
- 9.7%
- Unemployed (of the labor force)
- 3.6%
- Adults 25+ with a bachelor's degree
- 29.8%
- Adjusted gross income per tax return, 2022
- $75,71611,990 returns; wages 64% 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 53545?
FHFA's house price index for 53545, built from repeat sales and appraisals of the same homes, rose 118% from 2015 to 2025 and rose 60% from 2020 to 2025, and moved +7.0% in 2025.
- Median home value (owners' estimate)
- $220,700
- Median gross rent
- $1,062
- Homes owned by their occupants
- 64.7%
- Housing units
- 11,266
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 53545?
773 business establishments had a location in this ZIP code in 2023, 41 fewer than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade153
- Accommodation and food services94
- Other services (except public administration)90
- Health care and social assistance76
- Construction63
- Finance and insurance49
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 53545?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 53548 | Janesville | 19,916 | $77k | 5.7 mi |
| 53563 | Milton | 11,280 | $90k | 6.2 mi |
| 53546 | Janesville | 29,867 | $76k | 7.6 mi |
| 53534 | Edgerton | 12,241 | $89k | 8.9 mi |
| 53501 | Afton | 165 | – | 9.5 mi (near) |
| 53537 | Footville | 752 | $60k | 9.8 mi (near) |
| 53536 | Evansville | 9,547 | $88k | 11.7 mi (near) |
| 53505 | Avalon | 358 | $92k | 12.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.