The Town FilesKeystone, Iowa
City in Benton County · population 599 (2020 Census)
- Median home
- $148,400
- Household income
- $67,500
- Jan low / Jul high
- 10° / 84°
- Snow a year
- 28 in
- Tornadoes ≤10 mi since 1950
- 20
- Median age
- 43.5
Keystone is a city of 599 people in Benton County, Iowa. The median home is worth $148,400, below the typical Iowa town ($156,300). It ranks quieter than 88% of Iowa towns, easier by car than 76% of Iowa towns.
How Keystone ranks
Percentile among Iowa towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of Iowa towns.
Homes and cost of living
The median home in Keystone is worth $148,400, below the typical Iowa town ($156,300). Homes cost about 2.2 times the median household income of $67,500, which is more affordable than 56% of Iowa towns. Median rent is $892 a month. 77.8% of households own their home.
| Housing | Keystone | Typical Iowa town |
|---|---|---|
| Median home value | $148,400 | $156,300 |
| Median rent | $892 | $820 |
| Median household income | $67,500 | $69,254 |
| Home value ÷ income | 2.2× | 2.2× |
| Homeownership | 77.8% | 77.1% |
| Median year built | 1941 | 1962 |
| Seasonal / vacation homes | 0.0% | — |
Who lives in Keystone
| People | Keystone | Typical Iowa town |
|---|---|---|
| Median age | 43.5 | 40.2 |
| Age 65 and over | 24.5% | 20.0% |
| Under 18 | 19.9% | — |
| Bachelor's degree or higher | 22.2% | 21.8% |
| Below the poverty line | 10.6% | 9.3% |
| Veterans | 8.0% | — |
| Born outside the U.S. | 0.0% | — |
| Work from home | 8.4% | 7.1% |
| Average commute | 35.7 min | 21.6 min |
| Homes with broadband | 85.9% | 88.5% |
Weather in Keystone
July highs average 83.6°F and January lows 10.4°F. About 36.0 inches of rain and melted snow fall a year, with 27.9 inches of snow (typical Iowa town: 32.5 in). Expect about 14 days a year at 90°F or hotter and 153 nights at or below freezing.
Tornadoes, storms and disasters
20 tornadoes have passed within 10 miles of Keystone since 1950, compared with 24 for the typical Iowa town. 6 rated (E)F2 or stronger. The strongest, an F3, struck on May 31, 1971 about 8.7 miles from the town center. Tornadoes within 10 miles have caused 1 deaths and 10 injuries since 1950. The most recent was on July 11, 2025.
Hail of 1 inch or larger has been reported within 10 miles 56 times; the largest was 2.00 inches on April 14, 2026.
Severe weather in Benton County since 1996
Benton County has been included in 18 federal disaster or emergency declarations since 1953, most often for flood, hurricane, biological.
| Declared | Incident | Declaration |
|---|---|---|
| August 17, 2020 | Severe Storm | DR-4557: Severe Storms |
| March 23, 2020 | Biological | DR-4483: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3480: Covid-19 |
| October 31, 2016 | Flood | DR-4289: Severe Storms And Flooding |
| July 31, 2013 | Severe Storm | DR-4135: Severe Storms, Tornadoes, And Flooding |
Jobs and pay in Benton County
Benton County had 6,069 jobs in 2024, paying an average of $54,216 a year. Unemployment was 3.3% in 2023; in Keystone itself the ACS puts it at 3%.
Public schools in Keystone
1 public school with 173 students, about 15.7 students per teacher.
| School | Grades | Students | Per teacher |
|---|---|---|---|
| Keystone Elementary School | PK-3 | 173 | 15.7 |
Towns near Keystone
- Van Horne, IA5.6 mi · 774 people · home $184,500
- Belle Plaine, IA8.2 mi · 2,330 people · home $113,900
- Blairstown, IA8.8 mi · 713 people · home $175,000
- Newhall, IA11.9 mi · 876 people · home $186,300
- Dysart, IA13.2 mi · 1,281 people · home $158,300
- Vinton, IA14.3 mi · 4,938 people · home $152,300
- Marengo, IA15.6 mi · 2,435 people · home $123,200
- Atkins, IA17.4 mi · 2,056 people · home $314,900
Keystone questions
Is Keystone, Iowa a good place to retire?
On The Town Files lifestyle rankings, Keystone scores better for retirees than 53% of Iowa towns and quieter than 88%. 24.5% of residents are 65 or older (median age 43.5).
How much does a house cost in Keystone?
The median owner-occupied home in Keystone is valued at $148,400 (Census ACS 2020–2024), against a median household income of $67,500, so homes cost about 2.2 times income. Median rent is $892 a month.
What is the weather like in Keystone?
July highs average 83.6°F and January lows 10.4°F (NOAA 1991–2020 normals). It gets about 36.0 inches of precipitation a year and 27.9 inches of snow.
Does Keystone get tornadoes?
20 tornadoes have passed within 10 miles of Keystone since 1950 (NOAA Storm Events); the strongest was a F3 on May 31, 1971. The typical Iowa town has had 24.
- 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)