The Town FilesJohnstown, Wisconsin
Town in Rock County · population 766 (2020 Census)
- Median home
- $339,800
- Household income
- $84,609
- Jan low / Jul high
- 13° / 83°
- Snow a year
- 36 in
- Tornadoes ≤10 mi since 1950
- 31
- Median age
- 55.3
Johnstown is a town of 766 people in Rock County, Wisconsin. The median home is worth $339,800, above the typical Wisconsin town ($256,000). It ranks quieter than 95% of Wisconsin towns, easier by car than 88% of Wisconsin towns.
How Johnstown ranks
Percentile among Wisconsin towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Wisconsin towns.
Homes and cost of living
The median home in Johnstown is worth $339,800, above the typical Wisconsin town ($256,000). Homes cost about 4.0 times the median household income of $84,609, which is more affordable than 13% of Wisconsin towns. Median rent is $1,094 a month. 88.9% of households own their home.
| Housing | Johnstown | Typical Wisconsin town |
|---|---|---|
| Median home value | $339,800 | $256,000 |
| Median rent | $1,094 | $951 |
| Median household income | $84,609 | $82,217 |
| Home value ÷ income | 4.0× | 3.1× |
| Homeownership | 88.9% | 86.8% |
| Median year built | 1955 | 1978 |
| Seasonal / vacation homes | 3.0% | — |
Who lives in Johnstown
| People | Johnstown | Typical Wisconsin town |
|---|---|---|
| Median age | 55.3 | 45.1 |
| Age 65 and over | 23.5% | 21.0% |
| Under 18 | 14.1% | — |
| Bachelor's degree or higher | 24.2% | 23.8% |
| Below the poverty line | 5.5% | 7.2% |
| Veterans | 8.4% | — |
| Born outside the U.S. | 0.5% | — |
| Work from home | 6.9% | 10.9% |
| Average commute | 26.6 min | 24.6 min |
| Homes with broadband | 86.1% | 89.1% |
Weather in Johnstown
July highs average 82.9°F and January lows 13.4°F. About 36.7 inches of rain and melted snow fall a year, with 36.1 inches of snow (typical Wisconsin town: 45.7 in). Expect about 13 days a year at 90°F or hotter and 143 nights at or below freezing.
Tornadoes, storms and disasters
31 tornadoes have passed within 10 miles of Johnstown since 1950, compared with 15 for the typical Wisconsin town. 6 rated (E)F2 or stronger. The strongest, an F3, struck on January 24, 1967 about 4.9 miles from the town center. The most recent was on April 17, 2026.
Hail of 1 inch or larger has been reported within 10 miles 43 times; the largest was 2.25 inches on August 2, 2011.
Severe weather in Rock County since 1996
Rock County has been included in 16 federal disaster or emergency declarations since 1953, most often for flood, drought, hurricane.
| Declared | Incident | Declaration |
|---|---|---|
| June 30, 2026 | Flood | DR-4923: Severe Storms, Tornadoes, And Flooding |
| April 4, 2020 | Biological | DR-4520: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3454: Covid-19 |
| June 14, 2008 | Severe Storm | DR-1768: Severe Storms, Tornadoes, And Flooding |
| March 19, 2008 | Snowstorm | EM-3285: Record Snow And Near Record Snow |
Jobs and pay in Rock County
Rock County had 69,595 jobs in 2024, paying an average of $59,381 a year. Unemployment was 3.4% in 2023; in Johnstown itself the ACS puts it at 3.6%.
Towns near Johnstown
- Harmony, WI5.5 mi · 2,569 people · home $357,800
- Lima, WI5.6 mi · 1,271 people · home $280,800
- Richmond, WI6.4 mi · 1,901 people · home $309,400
- Whitewater, WI6.6 mi · 1,433 people · home $360,200
- Bradford, WI6.6 mi · 1,013 people · home $344,100
- Milton, WI6.7 mi · 5,716 people · home $249,200
- La Prairie, WI8.3 mi · 784 people · home $289,300
- Darien, WI8.7 mi · 1,651 people · home $292,500
Johnstown questions
Is Johnstown, Wisconsin a good place to retire?
On The Town Files lifestyle rankings, Johnstown scores better for retirees than 55% of Wisconsin towns and quieter than 95%. 23.5% of residents are 65 or older (median age 55.3).
How much does a house cost in Johnstown?
The median owner-occupied home in Johnstown is valued at $339,800 (Census ACS 2020–2024), against a median household income of $84,609, so homes cost about 4.0 times income. Median rent is $1,094 a month.
What is the weather like in Johnstown?
July highs average 82.9°F and January lows 13.4°F (NOAA 1991–2020 normals). It gets about 36.7 inches of precipitation a year and 36.1 inches of snow.
Does Johnstown get tornadoes?
31 tornadoes have passed within 10 miles of Johnstown since 1950 (NOAA Storm Events); the strongest was a F3 on January 24, 1967. The typical Wisconsin town has had 15.
- U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024)
- U.S. Census Bureau, 2020 Census and 2025 Gazetteer (2020 / 2025)
- NOAA NCEI U.S. Climate Normals (1991–2020)
- NOAA NCEI Storm Events Database (1950–2026)
- FEMA OpenFEMA Disaster Declarations (this product uses the FEMA OpenFEMA API but is not endorsed by FEMA) (1953–2026)
- NCES Common Core of Data (2023–24)
- BLS Quarterly Census of Employment and Wages; USDA ERS county unemployment (BLS LAUS) (2000–2024)
- The Town Files lifestyle rankings, built from federal demographic, school, crime and housing data (2025)