Rock County, WI at a glance
Median household income
$75,673$6,306 per month · U.S. Census Bureau ACS 5-YearHow much rent can you afford in Rock County, WI?
HUD’s fair market rent for each size, against what a typical household here earns. Change the income to see yours.
How much is rent in Rock County, WI? By bedroom, 2026
HUD's fiscal 2026 Fair Market Rents for Janesville-Beloit, WI MSA, with the income each one takes if rent stays under 30% of it.
| Unit Size | Monthly Rent | Annual Rent | 30% Rule Min. Income | % of Median Income |
|---|---|---|---|---|
| Studio / Efficiency | $900 | $10,800 | $36,000 | 14.3% |
| 1-Bedroom Apartment | $955 | $11,460 | $38,200 | 15.1% |
| 2-Bedroom ApartmentBenchmark | $1,246 | $14,952 | $49,840 | 19.8% |
| 3-Bedroom Home | $1,596 | $19,152 | $63,840 | 25.3% |
| 4-Bedroom Home | $1,650 | $19,800 | $66,000 | 26.2% |
What a typical income covers in Rock County, WI
The 50/30/20 rule applied to the local median of $75,673 a year ($6,306 a month before tax).
What $75,673 leaves after Wisconsin taxes
Federal income tax, Social Security, Medicare and Wisconsin tax on the local median income. Change the salary to see yours.
Rent, jobs and pay in Wisconsin
Living in Rock County, WI: common questions
What is the median household income in Rock County, WI?
According to the latest U.S. Census Bureau ACS 5-Year survey, the median household income in Rock County, WI is $75,673 per year (approximately $6,306 per month).
What is the average rent in Rock County, WI?
The closest official figure is HUD's Fair Market Rent for 2026: $900 for a studio, $955 for one bedroom, $1,246 for two, $1,596 for three and $1,650 for four, utilities included.
It is not an average of listings. HUD sets it at the rent 40% of recent movers paid or less for a standard unit, so a new lease on a nicer place will usually cost more.
Is Rock County, WI expensive to live in?
Prices there run 6.3% below the U.S. average. BEA's regional price parity for the metro area is 93.7, where the U.S. is 100. Rent moves the number most: housing is where places differ, while goods cost about the same everywhere.
How much do you need to earn to comfortably afford rent in Rock County, WI?
To keep a $1,246 two-bedroom under 30% of gross income, a household needs about $49,840 a year, or $4,153 a month. That is 66% of what the typical household in Rock County, WI earns.
How much do you need to live comfortably in Rock County, WI?
On the local median income of $75,673 ($6,306 a month before tax), the 50/30/20 rule leaves $3,153 a month for needs like rent, utilities and groceries, $1,892 for everything else and $1,261 for savings or debt. A two-bedroom at $1,246 takes 40% of the needs share.
How much is the electric bill in Rock County, WI?
Homes in Wisconsin paid 19.6¢ per kWh on average (EIA). At 900 kWh a month, a typical use, that is about $176. Your bill depends mostly on heating and cooling.