The Town FilesAndover, Illinois
Village in Henry County · population 555 (2020 Census)
- Median home
- $163,600
- Household income
- $77,813
- Jan low / Jul high
- 15° / 86°
- Snow a year
- 27 in
- Tornadoes ≤10 mi since 1950
- 25
- Median age
- 44.8
Andover is a village of 555 people in Henry County, Illinois. The median home is worth $163,600, close to the typical Illinois town ($156,600). It ranks easier by car than 96% of Illinois towns, better for families than 94% of Illinois towns, better for first-time buyers than 85% of Illinois towns.
How Andover 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 Andover is worth $163,600, close to the typical Illinois town ($156,600). Homes cost about 2.1 times the median household income of $77,813, which is more affordable than 55% of Illinois towns. Median rent is $924 a month. 81.5% of households own their home.
| Housing | Andover | Typical Illinois town |
|---|---|---|
| Median home value | $163,600 | $156,600 |
| Median rent | $924 | $960 |
| Median household income | $77,813 | $72,500 |
| Home value ÷ income | 2.1× | 2.2× |
| Homeownership | 81.5% | 76.6% |
| Median year built | 1972 | 1967 |
| Seasonal / vacation homes | 0.0% | — |
Who lives in Andover
| People | Andover | Typical Illinois town |
|---|---|---|
| Median age | 44.8 | 40.4 |
| Age 65 and over | 20.7% | 18.7% |
| Under 18 | 20.7% | — |
| Bachelor's degree or higher | 20.9% | 21.8% |
| Below the poverty line | 3.7% | 9.9% |
| Veterans | 6.1% | — |
| Born outside the U.S. | 1.8% | — |
| Work from home | 3.3% | 8.9% |
| Average commute | 29.7 min | 26.1 min |
| Homes with broadband | 79.9% | 90.4% |
Weather in Andover
July highs average 85.7°F and January lows 14.6°F. About 39.1 inches of rain and melted snow fall a year, with 26.8 inches of snow (typical Illinois town: 24.2 in). Expect about 22 days a year at 90°F or hotter and 126 nights at or below freezing.
Tornadoes, storms and disasters
25 tornadoes have passed within 10 miles of Andover since 1950, compared with 27 for the typical Illinois town. 6 rated (E)F2 or stronger. The strongest, an EF2, struck on March 31, 2023 about 9.2 miles from the town center. The most recent was on July 10, 2026.
Hail of 1 inch or larger has been reported within 10 miles 34 times; the largest was 3.00 inches on April 20, 2023.
Severe weather in Henry County since 1996
Henry County has been included in 16 federal disaster or emergency declarations since 1953, most often for flood, hurricane, snowstorm.
| Declared | Incident | Declaration |
|---|---|---|
| September 20, 2024 | Flood | DR-4819: Severe Storms, Tornadoes, Straight-Line Winds, And Floodng |
| March 26, 2020 | Biological | DR-4489: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3435: Covid-19 |
| September 19, 2019 | Flood | DR-4461: Severe Storms And Flooding |
| May 10, 2013 | Flood | DR-4116: Severe Storms, Straight-Line Winds, And Flooding |
Jobs and pay in Henry County
Henry County had 13,805 jobs in 2024, paying an average of $50,950 a year. Unemployment was 4.9% in 2023; in Andover itself the ACS puts it at 3.5%.
Towns near Andover
- Cambridge, IL5.2 mi · 2,086 people · home $123,100
- Orion, IL5.9 mi · 1,754 people · home $178,500
- Woodhull, IL8.2 mi · 754 people · home $122,400
- Alpha, IL8.5 mi · 675 people · home $111,400
- Windsor, IL10.2 mi · 668 people · home $109,800
- Sherrard, IL10.8 mi · 692 people · home $150,200
- Colona, IL12.5 mi · 5,045 people · home $147,500
- Coal Valley, IL12.6 mi · 3,873 people · home $215,700
Andover questions
Is Andover, Illinois a good place to retire?
On The Town Files lifestyle rankings, Andover scores better for retirees than 54% of Illinois towns and quieter than 79%. 20.7% of residents are 65 or older (median age 44.8).
How much does a house cost in Andover?
The median owner-occupied home in Andover is valued at $163,600 (Census ACS 2020–2024), against a median household income of $77,813, so homes cost about 2.1 times income. Median rent is $924 a month.
What is the weather like in Andover?
July highs average 85.7°F and January lows 14.6°F (NOAA 1991–2020 normals). It gets about 39.1 inches of precipitation a year and 26.8 inches of snow.
Does Andover get tornadoes?
25 tornadoes have passed within 10 miles of Andover since 1950 (NOAA Storm Events); the strongest was an EF2 on March 31, 2023. 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)