The Town FilesLannon, Wisconsin
Village in Waukesha County · population 1,355 (2020 Census)
- Median home
- $260,000
- Household income
- $83,889
- Jan low / Jul high
- 11° / 83°
- Snow a year
- 54 in
- Tornadoes ≤10 mi since 1950
- 21
- Median age
- 42.2
Lannon is a village of 1,355 people in Waukesha County, Wisconsin. The median home is worth $260,000, close to the typical Wisconsin town ($256,000). It ranks better for families than 97% of Wisconsin towns, more upscale than 97% of Wisconsin towns, better for young professionals than 83% of Wisconsin towns.
How Lannon 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 Lannon is worth $260,000, close to the typical Wisconsin town ($256,000). Homes cost about 3.1 times the median household income of $83,889, which is more affordable than 55% of Wisconsin towns. Median rent is $773 a month. 85.0% of households own their home.
| Housing | Lannon | Typical Wisconsin town |
|---|---|---|
| Median home value | $260,000 | $256,000 |
| Median rent | $773 | $951 |
| Median household income | $83,889 | $82,217 |
| Home value ÷ income | 3.1× | 3.1× |
| Homeownership | 85.0% | 86.8% |
| Median year built | 1995 | 1978 |
| Seasonal / vacation homes | 2.7% | — |
Who lives in Lannon
| People | Lannon | Typical Wisconsin town |
|---|---|---|
| Median age | 42.2 | 45.1 |
| Age 65 and over | 20.4% | 21.0% |
| Under 18 | 17.3% | — |
| Bachelor's degree or higher | 43.8% | 23.8% |
| Below the poverty line | 1.4% | 7.2% |
| Veterans | 16.0% | — |
| Born outside the U.S. | 6.3% | — |
| Work from home | 18.9% | 10.9% |
| Average commute | 19.0 min | 24.6 min |
| Homes with broadband | 97.8% | 89.1% |
Weather in Lannon
July highs average 83.1°F and January lows 10.7°F. About 36.8 inches of rain and melted snow fall a year, with 54.3 inches of snow (typical Wisconsin town: 45.7 in). Expect about 13 days a year at 90°F or hotter and 154 nights at or below freezing.
Tornadoes, storms and disasters
21 tornadoes have passed within 10 miles of Lannon since 1950, compared with 15 for the typical Wisconsin town. 9 rated (E)F2 or stronger. The strongest, an F4, struck on April 27, 1984 about 5.7 miles from the town center and killed 1. Tornadoes within 10 miles have caused 1 deaths and 21 injuries since 1950. The most recent was on April 14, 2026.
Hail of 1 inch or larger has been reported within 10 miles 73 times; the largest was 2.75 inches on April 13, 2006.
Severe weather in Waukesha County since 1996
Waukesha County has been included in 19 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 |
| September 11, 2025 | Flood | DR-4892: Severe Storms, Straight-Line Winds, Flooding, And Mudslides |
| 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 |
Jobs and pay in Waukesha County
Waukesha County had 247,891 jobs in 2024, paying an average of $69,989 a year. Unemployment was 2.6% in 2023; in Lannon itself the ACS puts it at 1.5%.
Public schools in Lannon
1 public school with 349 students, about 14.5 students per teacher.
| School | Grades | Students | Per teacher |
|---|---|---|---|
| Lannon Elementary | K-4 | 349 | 14.5 |
Towns near Lannon
- Menomonee Falls, WI1.9 mi · 38,527 people · home $368,000
- Sussex, WI3.8 mi · 11,487 people · home $430,600
- Butler, WI5.5 mi · 1,787 people · home $244,700
- Germantown, WI5.6 mi · 20,917 people · home $373,600
- Brookfield, WI6.7 mi · 41,464 people · home $443,900
- Richfield, WI6.8 mi · 11,739 people · home $503,400
- Pewaukee, WI6.9 mi · 8,238 people · home $281,800
- Pewaukee, WI7.7 mi · 15,914 people · home $447,100
Lannon questions
Is Lannon, Wisconsin a good place to retire?
On The Town Files lifestyle rankings, Lannon scores better for retirees than 36% of Wisconsin towns and quieter than 28%. 20.4% of residents are 65 or older (median age 42.2).
How much does a house cost in Lannon?
The median owner-occupied home in Lannon is valued at $260,000 (Census ACS 2020–2024), against a median household income of $83,889, so homes cost about 3.1 times income. Median rent is $773 a month.
What is the weather like in Lannon?
July highs average 83.1°F and January lows 10.7°F (NOAA 1991–2020 normals). It gets about 36.8 inches of precipitation a year and 54.3 inches of snow.
Does Lannon get tornadoes?
21 tornadoes have passed within 10 miles of Lannon since 1950 (NOAA Storm Events); the strongest was a F4 on April 27, 1984. 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)