ZIP code 57223: Castlewood, SD
57223 is a ZIP code in Castlewood, South Dakota, mainly in Hamlin County. About 1,429 people live here.
- Population
- 1,429
- Median household income
- $92,424
- Typical home value
- $339,800+11.9% in 12 months
- Median rent
- $1,133gross, per month
- Median age
- 34.3
- Homeowners
- 87.6%of occupied homes
Shaded: ZIP code 57223's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 57223 details
| City | Castlewood |
|---|---|
| State | South Dakota |
| County | Hamlin County (also partly Deuel County) |
| Metro area | Not in a metro or micro area |
| Time zone | Central Time (UTC−6), observes daylight saving time |
| Type | Standard (delivery area) |
| Land area | 124.6 sq mi, plus 3.2 sq mi of water |
| Population density | 11 people per sq mi |
| Bachelor's degree or higher | 28.5% of adults 25+ |
| Average commute | 24.8 minutes |
| Center coordinates | 44.71230, -96.99435 |
ZIP codes near 57223
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 57234 | Estelline, SD | 8.6 mi | 1,339 |
| 57241 | Hayti, SD | 11.0 mi | 936 |
| 57238 | Goodwin, SD | 12.9 mi | 315 |
| 57248 | Lake Norden, SD | 13.0 mi | 1,295 |
| 57245 | Kranzburg, SD | 13.1 mi | 151 |
| 57226 | Clear Lake, SD | 14.0 mi | 1,953 |
| 57201 | Watertown, SD | 16.2 mi | 26,781 |
| 57220 | Bruce, SD | 17.9 mi | 665 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Buying a home in 57223?
A typical home in ZIP code 57223 is worth about $339,800 (Zillow Home Value Index). The median household here earns $92,424 a year. See what buying here would cost per month, with South Dakota average taxes and insurance filled in.
Monthly payment for a $339,800 homeWhat can a $92,424 income afford?Rental property numbers
About ZIP code 57223
What city is ZIP code 57223?
ZIP code 57223 is in Castlewood, SD, in Hamlin County.
What county is ZIP code 57223 in?
57223 is mainly in Hamlin County, South Dakota, and partly in Deuel County.
What is the population of ZIP code 57223?
About 1,429 people live in ZIP code 57223, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 57223 in?
57223 is in Central Time (UTC−6). It observes daylight saving time.