The Town FilesCastlewood, South Dakota
City in Hamlin County · population 698 (2020 Census)
- Median home
- $198,200
- Household income
- $87,045
- Jan low / Jul high
- 3° / 83°
- Snow a year
- 40 in
- Tornadoes ≤10 mi since 1950
- 11
- Median age
- 36.5
Castlewood is a city of 698 people in Hamlin County, South Dakota. The median home is worth $198,200, above the typical South Dakota town ($182,100). It ranks better for a vacation home than 94% of South Dakota towns, better for families than 87% of South Dakota towns.
How Castlewood ranks
Percentile among South Dakota towns with at least 500 people on The Town Files lifestyle rankings. 50 is typical for the state; 90 means better than 90% of South Dakota towns.
Homes and cost of living
The median home in Castlewood is worth $198,200, above the typical South Dakota town ($182,100). Homes cost about 2.3 times the median household income of $87,045, which is more affordable than 65% of South Dakota towns. Median rent is $1,139 a month. 82.5% of households own their home.
| Housing | Castlewood | Typical South Dakota town |
|---|---|---|
| Median home value | $198,200 | $182,100 |
| Median rent | $1,139 | $785 |
| Median household income | $87,045 | $66,086 |
| Home value ÷ income | 2.3× | 2.7× |
| Homeownership | 82.5% | 71.0% |
| Median year built | 1973 | 1973 |
| Seasonal / vacation homes | 0.0% | — |
Who lives in Castlewood
| People | Castlewood | Typical South Dakota town |
|---|---|---|
| Median age | 36.5 | 39.5 |
| Age 65 and over | 11.3% | 19.4% |
| Under 18 | 33.0% | — |
| Bachelor's degree or higher | 25.0% | 23.6% |
| Below the poverty line | 4.4% | 10.1% |
| Veterans | 8.2% | — |
| Born outside the U.S. | 0.7% | — |
| Work from home | 3.6% | 5.7% |
| Average commute | 25.2 min | 17.4 min |
| Homes with broadband | 80.1% | 86.7% |
Weather in Castlewood
July highs average 82.5°F and January lows 2.5°F. About 24.3 inches of rain and melted snow fall a year, with 39.8 inches of snow (typical South Dakota town: 39.8 in). Expect about 13 days a year at 90°F or hotter and 182 nights at or below freezing.
Tornadoes, storms and disasters
11 tornadoes have passed within 10 miles of Castlewood since 1950, compared with 13 for the typical South Dakota town. 3 rated (E)F2 or stronger. The strongest, an EF2, struck on May 12, 2022 about 0.1 miles from the town center. The most recent was on February 24, 2025.
Hail of 1 inch or larger has been reported within 10 miles 46 times; the largest was 2.75 inches on July 30, 1999.
Severe weather in Hamlin County since 1996
Hamlin County has been included in 22 federal disaster or emergency declarations since 1953, most often for flood, drought, snowstorm.
| Declared | Incident | Declaration |
|---|---|---|
| February 27, 2023 | Winter Storm | DR-4689: Severe Winter Storms And Snowstorm |
| June 29, 2022 | Severe Storm | DR-4656: Severe Storm, Straight-Line Winds, Tornadoes, And Flooding |
| April 5, 2020 | Biological | DR-4527: Covid-19 Pandemic |
| March 13, 2020 | Biological | EM-3475: Covid-19 |
| September 23, 2019 | Flood | DR-4463: Severe Storms And Flooding |
Jobs and pay in Hamlin County
Hamlin County had 2,629 jobs in 2024, paying an average of $55,544 a year. Unemployment was 1.8% in 2023; in Castlewood itself the ACS puts it at 1.7%.
Public schools in Castlewood
4 public schools with 338 students, about 15.4 students per teacher.
| School | Grades | Students | Per teacher |
|---|---|---|---|
| Castlewood Elementary - 02 | PK-5 | 144 | 14.4 |
| Castlewood High School - 01 | 9-12 | 106 | 15.1 |
| Castlewood Middle School - 03 | 6-8 | 73 | 18.3 |
| Claremont Colony Elementary - 04 | K-8 | 15 | 15.0 |
Towns near Castlewood
- Lake Poinsett, SD11.2 mi · 501 people · home $493,200
- Estelline, SD12.0 mi · 749 people · home $142,200
- Lake Norden, SD13.3 mi · 554 people · home $192,600
- Watertown, SD14.2 mi · 22,655 people · home $229,400
- Clear Lake, SD16.9 mi · 1,218 people · home $162,500
- Arlington, SD25.4 mi · 915 people · home $144,300
- White, SD27.5 mi · 537 people · home $128,800
- Volga, SD28.3 mi · 2,113 people · home $240,000
Castlewood questions
Is Castlewood, South Dakota a good place to retire?
On The Town Files lifestyle rankings, Castlewood scores better for retirees than 15% of South Dakota towns and quieter than 57%. 11.3% of residents are 65 or older (median age 36.5).
How much does a house cost in Castlewood?
The median owner-occupied home in Castlewood is valued at $198,200 (Census ACS 2020–2024), against a median household income of $87,045, so homes cost about 2.3 times income. Median rent is $1,139 a month.
What is the weather like in Castlewood?
July highs average 82.5°F and January lows 2.5°F (NOAA 1991–2020 normals). It gets about 24.3 inches of precipitation a year and 39.8 inches of snow.
Does Castlewood get tornadoes?
11 tornadoes have passed within 10 miles of Castlewood since 1950 (NOAA Storm Events); the strongest was an EF2 on May 12, 2022. The typical South Dakota town has had 13.
- 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)