ZIP code 57278: Willow Lake, SD
57278 is a ZIP code in Willow Lake, South Dakota, mainly in Clark County. About 1,011 people live here.
- Population
- 1,011
- Median household income
- $70,208
- Typical home value
- $220,400ACS median value
- Median rent
- $808gross, per month
- Median age
- 24.6
- Homeowners
- 77.6%of occupied homes
Shaded: ZIP code 57278's area. Click anywhere on the map to see which ZIP code it's in.
ZIP codes within 10 milesWithin 25 miles
ZIP code 57278 details
| City | Willow Lake |
|---|---|
| State | South Dakota |
| County | Clark 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 | 157.6 sq mi, plus 1.3 sq mi of water |
| Population density | 6 people per sq mi |
| Bachelor's degree or higher | 25.5% of adults 25+ |
| Average commute | 19.6 minutes |
| Center coordinates | 44.64883, -97.68115 |
Median rent in 57278 by bedrooms
| Size | Median gross rent |
|---|---|
| 1 bedroom | $529/mo |
| 2 bedrooms | $480/mo |
Gross rent includes utilities paid by the tenant. ACS 2020–2024; sizes with too few rentals to estimate are left out.
ZIP codes near 57278
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 57271 | Vienna, SD | 10.3 mi | 246 |
| 57221 | Bryant, SD | 12.1 mi | 1,158 |
| 57322 | Carpenter, SD | 13.8 mi | 378 |
| 57225 | Clark, SD | 16.4 mi | 1,833 |
| 57233 | Erwin, SD | 16.9 mi | 350 |
| 57242 | Hazel, SD | 18.1 mi | 320 |
| 57386 | Yale, SD | 18.4 mi | 240 |
| 57231 | De Smet, SD | 19.5 mi | 1,724 |
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 57278?
A typical home in ZIP code 57278 is worth about $220,400 (ACS median value). The median household here earns $70,208 a year. See what buying here would cost per month, with South Dakota average taxes and insurance filled in.
Monthly payment for a $220,400 homeWhat can a $70,208 income afford?Rental property numbers
About ZIP code 57278
What city is ZIP code 57278?
ZIP code 57278 is in Willow Lake, SD, in Clark County.
What county is ZIP code 57278 in?
57278 is mainly in Clark County, South Dakota.
What is the population of ZIP code 57278?
About 1,011 people live in ZIP code 57278, according to the American Community Survey 2020–2024 5-year estimates.
What time zone is ZIP code 57278 in?
57278 is in Central Time (UTC−6). It observes daylight saving time.