ZIP Code 53548 — Janesville city, WI Demographics & Data

ZIP code 53548 covers Janesville, WI in Rock County with a population of about 20,509.

At a glance, the area shows median age of 40.8 versus a U.S. median of about 38.9.

It sits in telephone area code 608; U.S. House district WI-2; the MADISON media market.

Median household income in ZIP 53548 is about $74,696 — about even with the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 10.8%; unemployment rate near 5.4%; 26.7% of adults with a bachelor’s degree or higher (about 7.0 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Manufacturing, Healthcare, and Retail trade; about 8.6% of workers reporting work-from-home (about 6.6 points below the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $226,600 — about 35% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $815 (about 30% below the U.S. median rent ($1,163)), and owner-occupancy near 67.8% (about 2.4 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 53548 in Janesville, WI, a household would need roughly $62,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $1,456. That sits below the local median household income ($74,696), suggesting the typical household income is closer to a workable buy-in level under these assumptions. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for Janesville city, WI as Relatively Moderate (composite score 86.4), which is elevated versus much of the country. The strongest component scores on US5 are flood (87.6) and wildfire (26.8). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for Janesville city, WI show little to no average snow and around 37.4 inches of annual precipitation.

IRS migration statistics show a net inflow of about 1,196 for ZIP 53548 (Janesville city, WI) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.