Browse / United States / South Dakota / Castlewood
Castlewood
South Dakotacity
Castlewood
Total population
804
Median home value
$198,200
Bachelor's+
Median income
$87,045
Demographic figures from US Census Bureau · ACS 5-year estimates. Overview below cites Wikipedia and may reference a different year.
City facts
Facts from Wikidata (CC0).
Overview
Castlewood is a city in Hamlin County, South Dakota, United States. It is part of the Watertown, South Dakota Micropolitan Statistical Area. The population was 698 at the 2020 census, and was estimated to be 707 in 2022.
Read more on WikipediaHistory & geography
History
Castlewood was platted in 1881 when the railroad was extended to that point. The city was named Castlewood after a place mentioned in the 1857 novel The Virginians by William Makepeace Thackeray. A destructive EF2 tornado hit the town on May 12, 2022, destroying several structures, damaging homes, and injuring one person.
Geography
Castlewood is located along the Big Sioux River. According to the United States Census Bureau, the city has a total area of , all land. Summers are warm, with an average temperature of 69.4 °F (20.8 °C) in July, and experience a high level of precipitation compared to the dry winters.
Excerpted from the corresponding Wikipedia article (CC BY-SA).
Demographics & economy
Race & ethnicity
Source: US Census Bureau — American Community Survey, 5-year estimates.
Geography
Coordinates & boundaries from the US Census TIGER/Line shapefiles.
Climate
Current forecast
Forecast for Castlewood, SD from NOAA NWS API.
Air quality
Industrial & pollution facilities
Natural hazard risk
Health (adults)
Age-adjusted prevalence estimates from CDC PLACES (latest release).
Walkability
Amenities nearby
Wildlife & biodiversity
Most-observed species
- Red-winged BlackbirdAgelaius phoeniceus (Linnaeus, 1766) · Aves162
- MallardAnas platyrhynchos Linnaeus, 1758 · Aves143
- Canada Goose (canadensis Group)Branta canadensis (Linnaeus, 1758) · Aves140
- Common GrackleQuiscalus quiscula (Linnaeus, 1758) · Aves123
- American White PelicanPelecanus erythrorhynchos Gmelin, 1789 · Aves114
- Great EgretArdea alba Linnaeus, 1758 · Aves114
- KilldeerCharadrius vociferus Linnaeus, 1758 · Aves109
- Mourning DoveZenaida macroura (Linnaeus, 1758) · Aves103
Citizen-science & research observations from the Global Biodiversity Information Facility (GBIF).
Schools
Largest nearby schools
- Castlewood Elementary - 02Elementary · Castlewood · 154 students · 15.4:1 ratio
- Castlewood High School - 01High · Castlewood · 91 students · 13:1 ratio
- Castlewood Middle School - 03Middle · Castlewood · 75 students · 18.8:1 ratio
- Claremont Colony Elementary - 04Elementary · Castlewood · 14 students · 14:1 ratio
Public K–12 schools within ~10 mi from Urban Institute Education Data Portal (NCES Common Core of Data, 2022).
Earthquake history
Most recent
- M 3.1 — 2005-10-197 km N of Howard, South Dakota
Events from the USGS Earthquake Catalog (global) (FDSN Event Web Service).
Photos
Sights & places nearby
Notable people from here
People born within ~10 km, from Wikidata (CC0). Click any name for their Wikipedia article.
Nearby places in South Dakota
Geography & sun
Elevation, sunrise/sunset and daylight from Open-Meteo. Solar climatology from NASA POWER.
Nearby airports
Public attention
Pageview totals from the Wikimedia Pageviews API.
Books about this place
Recent natural events nearby
- Wildfire Twin Butte Ck, Corson, South DakotaWildfires · 2026-07-27 · 240 mi
Wildfires, storms and other events from NASA EONET (last 12 months, within 250 mi).
Ground air-quality sensors
Recently spotted species
Research-grade observations from iNaturalist (within ~15 mi).
Nearest stream gauge
Events
Gallery
Sources
- • Wikipedia
- • US Census Bureau (ACS 5-year estimates)
- • NOAA National Weather Service
- • Wikidata
- • USGS Earthquake Catalog (global feed)
- • NCES via Urban Institute Education Data Portal
- • GBIF (Global Biodiversity Information Facility)
- • iNaturalist
- • CDC PLACES
- • Open-Meteo / sunrise-sunset.org
- • Wikipedia Pageviews API
- • NASA EONET