The Town FilesLemont, Illinois
Village in Cook County · population 17,629 (2020 Census) · spans 3 counties
- Median home
- $468,800
- Household income
- $123,370
- Jan low / Jul high
- 15° / 90°
- Snow a year
- 33 in
- Tornadoes ≤10 mi since 1950
- 47
- Median age
- 43.7
Lemont is a village of 17,629 people in Cook County, Illinois. The median home is worth $468,800, above the typical Illinois town ($156,600). It ranks more of a college town than 93% of Illinois towns, better for families than 90% of Illinois towns, more upscale than 89% of Illinois towns.
How Lemont ranks
Percentile among Illinois towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Illinois towns.
Homes and cost of living
The median home in Lemont is worth $468,800, above the typical Illinois town ($156,600). Homes cost about 3.8 times the median household income of $123,370, which is more affordable than 7% of Illinois towns. Median rent is $1,209 a month. 87.6% of households own their home.
| Housing | Lemont | Typical Illinois town |
|---|---|---|
| Median home value | $468,800 | $156,600 |
| Median rent | $1,209 | $960 |
| Median household income | $123,370 | $72,500 |
| Home value ÷ income | 3.8× | 2.2× |
| Homeownership | 87.6% | 76.6% |
| Median year built | 1995 | 1967 |
| Seasonal / vacation homes | 0.2% | — |
Who lives in Lemont
| People | Lemont | Typical Illinois town |
|---|---|---|
| Median age | 43.7 | 40.4 |
| Age 65 and over | 20.8% | 18.7% |
| Under 18 | 25.0% | — |
| Bachelor's degree or higher | 46.9% | 21.8% |
| Below the poverty line | 3.1% | 9.9% |
| Veterans | 4.9% | — |
| Born outside the U.S. | 17.8% | — |
| Work from home | 17.1% | 8.9% |
| Average commute | 34.8 min | 26.1 min |
| Homes with broadband | 92.4% | 90.4% |
Weather in Lemont
July highs average 89.5°F and January lows 14.7°F. About 41.4 inches of rain and melted snow fall a year, with 33.2 inches of snow (typical Illinois town: 24.2 in). Expect about 45 days a year at 90°F or hotter and 131 nights at or below freezing.
Tornadoes, storms and disasters
47 tornadoes have passed within 10 miles of Lemont since 1950, compared with 27 for the typical Illinois town. 12 rated (E)F2 or stronger. The strongest, an F4, struck on June 13, 1976 about 0.6 miles from the town center and killed 2. Tornadoes within 10 miles have caused 38 deaths and 663 injuries since 1950. The most recent was on July 27, 2026.
Hail of 1 inch or larger has been reported within 10 miles 154 times; the largest was 4.80 inches on March 10, 2026.
Severe weather in Cook County since 1996
Cook County has been included in 24 federal disaster or emergency declarations since 1953, most often for flood, tornado, hurricane.
| Declared | Incident | Declaration |
|---|---|---|
| September 20, 2024 | Flood | DR-4819: Severe Storms, Tornadoes, Straight-Line Winds, And Floodng |
| November 20, 2023 | Flood | DR-4749: Severe Storms And Flooding |
| August 15, 2023 | Severe Storm | DR-4728: Severe Storms And Flooding |
| March 26, 2020 | Biological | DR-4489: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3435: Covid-19 |
Jobs and pay in Cook County
Cook County had 2,565,567 jobs in 2024, paying an average of $86,931 a year. Unemployment was 4.4% in 2023; in Lemont itself the ACS puts it at 4.5%.
Public schools in Lemont
5 public schools with 3,882 students, about 15.0 students per teacher.
| School | Grades | Students | Per teacher |
|---|---|---|---|
| Lemont Twp High School | 9-12 | 1,305 | 14.8 |
| Old Quarry Middle Sch | 6-8 | 825 | 14.5 |
| Oakwood School | PK-1 | 634 | 15.5 |
| River Valley School | 2-3 | 578 | 15.6 |
| Central School | 4-5 | 540 | 15.4 |
Towns near Lemont
- Homer Glen, IL4.6 mi · 24,543 people · home $418,800
- Darien, IL5.4 mi · 22,011 people · home $398,700
- Woodridge, IL5.7 mi · 34,158 people · home $363,700
- Lockport, IL5.8 mi · 26,094 people · home $316,000
- Bolingbrook, IL6.4 mi · 73,922 people · home $314,700
- Burr Ridge, IL6.5 mi · 11,192 people · home $700,400
- Romeoville, IL6.6 mi · 39,863 people · home $257,100
- Willow Springs, IL6.9 mi · 5,857 people · home $378,300
Lemont questions
Is Lemont, Illinois a good place to retire?
On The Town Files lifestyle rankings, Lemont scores better for retirees than 57% of Illinois towns and quieter than 29%. 20.8% of residents are 65 or older (median age 43.7).
How much does a house cost in Lemont?
The median owner-occupied home in Lemont is valued at $468,800 (Census ACS 2020–2024), against a median household income of $123,370, so homes cost about 3.8 times income. Median rent is $1,209 a month.
What is the weather like in Lemont?
July highs average 89.5°F and January lows 14.7°F (NOAA 1991–2020 normals). It gets about 41.4 inches of precipitation a year and 33.2 inches of snow.
Does Lemont get tornadoes?
47 tornadoes have passed within 10 miles of Lemont since 1950 (NOAA Storm Events); the strongest was a F4 on June 13, 1976. The typical Illinois town has had 27.
- 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)