Skip to main content

WI area data

Janesville, WI

Aggregated across 2 ZIP codes in Janesville.

Population: 54,570 (Census ACS)

The typical home value in Janesville, WI is $306,623 — up 5.7% over the past year. Homes sell for a median $316,000 after a median 42 days on market. Typical rent runs $1,214/month. 17 schools serve the area (NCES). FEMA's National Risk Index rates the county's overall natural-hazard risk Relatively Moderate, with cold wave, hail, lightning the top-rated hazards. Cost of living is 5.9% below the US average (BEA, metro/state-level).

Backed by 25+ public sourcesFEMA · U.S. Census · NOAA · Dept. of Education · EPA · and more

$306,623

Typical home value

+5.7%

1-year change

42

Median days on market

Relatively Moderate

Hazard risk (county)

Home values & appreciation

Typical home value
$306,623
1-year appreciation
+5.7%
3-year appreciation
+19.8%
5-year appreciation
+37.4%
10-year appreciation
+112.0%
Peak value since 2000 (Aug 2026)
$306,623
House Price Index (state)
483.7 (+4.8% YoY)

Sources: home value index (ZIP-level) · FHFA House Price Index (state-level)

Market activity

Median sale price
$316,000
Median list price
$322,450
Median price per sqft
$183
1-year sale-price change
+6.0%
Median days on market
42 days
Homes sold (recent period)
199
For-sale inventory
143
Sale-to-list ratio
101.0%
Active listings
145
1-year forecast
+3.0%
Days to pending
21 days
New listings (monthly)
71

Source: recent area sales and market data (ZIP-level)

Rents

Typical rent
$1,214/mo
1-year rent change
+10.3%
Studio fair-market rent
$976/mo
1BR fair-market rent
$998/mo
2BR fair-market rent
$1,280/mo
3BR fair-market rent
$1,621/mo
4BR fair-market rent
$1,682/mo

Sources: market rent index (ZIP-level) · HUD Fair Market Rents (metro/county-level, 40th-percentile regulatory reference)

Affordability

Cost of living index (Below Average)
94.1 (100 = US avg)
Electricity rate (state-level)
18.2¢/kWh
Natural gas rate (state-level)
$10.70/MCF
30-year mortgage rate (national)
7.40%
15-year mortgage rate (national)
6.73%

Sources: BEA Regional Price Parities (metro/state-level) · EIA energy rates (state-level) · Freddie Mac PMMS (national)

Schools

Total schools
17
Elementary schools
11
Middle schools
2
High schools
2
Charter schools
1
Avg student-teacher ratio
12.7 : 1
School districts serving the area
Janesville School District, Milton School District, Wisconsin Dept of Public Instruction
Schools include
Adams Elementary, Craig High, Jefferson Elementary, Marshall Middle, Monroe Elementary

Source: NCES school directory, 2024-25 (school-address-based)

Natural hazards & flood risk

Overall hazard risk (county)
Relatively Moderate
Top hazards (county)
cold wave, hail, lightning, strong wind, tornado
Notable hazard ratings (county)
hail: Relatively High · tornado: Relatively High · cold wave: Relatively High · lightning: Relatively High · strong wind: Relatively High · heat wave: Relatively Moderate
Most common flood zone among NFIP claims (varies by location)
Zone A09
NFIP flood claims on record
86
Wildfire risk to homes (county)
Higher than 12% of US counties
Buildings in wildfire direct-exposure zone
28.4%
Radon potential (county)
High radon potential — EPA Zone 1 of 3
EPA Superfund (NPL) sites within 5 mi
2
Nearest Superfund site
Janesville Ash Beds (2.5 mi)
Flood zones vary by property. Look up a specific address on the FEMA Flood Map Service Center.
EPA recommends radon testing for every home regardless of zone.

Sources: FEMA National Risk Index (county-level) · FEMA NFIP flood-insurance claims (ZIP-level) · USDA Forest Service Wildfire Risk to Communities (county-level) · EPA radon zones + Superfund NPL

Climate (30-year normals)

Average annual temperature
51.0°F
Average high
59.0°F
Average low
42.0°F
Annual precipitation
38.9 in
Annual snowfall
40.5 in
USDA plant hardiness zone
5b (extreme annual low -15 to -10°F)

Sources: NOAA Climate Normals (30-year, nearest-station) · USDA Plant Hardiness Zone Map (2023)

Air quality

Air quality rating
Good
Median AQI (annual)
42
Days with Good air quality
159
Days with Moderate air quality
39
Highest AQI recorded (year)
108

Source: EPA annual air quality index (county-level)

Walkability & transit

Walkability index
10.3 / 20
Transit service frequency
-49,868
Jobs reachable by car (30 min)
25,284
Jobs reachable by transit (45 min)
25,762

Source: EPA Smart Location Database (metropolitan block groups)

Amenities

Airports within 30 mi
75
Nearest airport
Southern Wisconsin Regional Airport (JVL) (5 mi)
Nearest major airport
Dane County Regional Truax Field (MSN) (32 mi)
Hospitals in or near a typical ZIP here
14
Hospitals include
FHN MEMORIAL HOSPITAL, UW HEALTH, SAINT ANTHONY MEDICAL CENTER
Avg hospital rating (CMS)
4.0 / 5
Best hospital rating nearby (CMS)
4.5 / 5
Solar radiation rating
Fair (3.8 kWh/m²/day)

Sources: National Park Service · FAA airport data · CMS hospital data (same ZIP, else within ~40 mi) · DOE/NREL (proximity-based)

Migration

Net migration (county)
+153 tax filers

Source: IRS SOI county-to-county migration (county-level; published with a multi-year lag)

Housing stock

Median year housing built
1973
Housing built before 1970
44.5%
Housing built 2000 or later
14.7%
Median annual property tax
$3,805
Mean commute to work
20 min
Households with broadband internet
76.3%

Source: Census ACS 5-year estimates (ZIP-level)

Employment & development

Total county employment
61,757
Average weekly wage
$1,214
Top industries (by employment)
Health Care, Accommodation & Food, Wholesale Trade
Annual residential building permits (county)
388

Sources: BLS QCEW (county-level) · Census Building Permits (county-level)

How it compares

JanesvilleState medianUS median
Typical home value$306,623$311,804$288,527
Median sale price$316,000$322,500$325,000
Median days on market42 days49 days51 days
Typical rent$1,214/mo$1,435/mo$1,809/mo
Median annual property tax$3,805$2,994$2,006

State and US medians are computed across all US ZIP codes with sufficient public-data coverage, from the same sources as the figures above.

Area data compiled from public government, academic, and industry research feeds. Data sources →

Common questions

What is the typical home value in Janesville, WI?
$306,623.
What is the median sale price in Janesville, WI?
$316,000.
How long do homes take to sell in Janesville, WI?
Median days on market: 42 days.
What is typical rent in Janesville, WI?
Typical rent: $1,214/month.
What is the natural-hazard risk in Janesville, WI?
Overall risk: Relatively Moderate (FEMA NRI, county-level). Top hazards: cold wave, hail, lightning, strong wind, tornado.
Is Janesville, WI in a flood zone?
Flood zones vary by property across the city. 86 FEMA flood-insurance (NFIP) claims are on record; the most common zone among them is A09. Check a specific address on the FEMA Flood Map Service Center.
What is the wildfire risk in Janesville, WI?
Risk to homes is higher than 12% of US counties (USDA Forest Service Wildfire Risk to Communities, county-level).
What is the radon potential in Janesville, WI?
High radon potential — EPA Zone 1 of 3, county-level. EPA recommends testing every home regardless of zone.
Are there Superfund sites near Janesville, WI?
2 current or proposed National Priorities List sites within 5 miles (EPA). Nearest site: Janesville Ash Beds, 2.5 mi.
How many schools serve Janesville, WI?
17 schools (11 elementary, 2 middle, 2 high) (NCES, 2024-25).
Is Janesville, WI walkable?
Walkability index: 10.3/20 (EPA Smart Location Database).
What is the air quality in Janesville, WI?
Good. Median AQI: 42. (EPA AQI).
What is the cost of living in Janesville, WI?
Regional Price Parity: 94.1 (100 = US average) (Below Average) (BEA RPP, metro/state-level).

ZIP codes in Janesville

Listing a home in Janesville, WI?

REAIGENT7 gives every listing its own AI assistant grounded in this same public data — it answers buyer and renter questions about the home and the area, around the clock, and sends every lead to the listing agent. Agents: it installs on your listing page, your website, or WordPress.

Data last updated

Most recent source refresh: Oct 2026. See all data sources →

Data compiled by REAIGENT7 — AI listing platform for real estate agents