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zipcodes.pro — CITY/SD/WILLOW-LAKE

Willow Lake ZIP code, South Dakota

The ZIP code for Willow Lake, SD is 57278, and its area code is 605.

USPS city name
1 ZIP code
Population
433
Area code
605

NANPA lists no telephone rate centre for Willow Lake itself, so these are the area codes of the nearest one, Carpenter (13.8 miles). A town on an area-code boundary can differ from its neighbour.

Willow Lake in numbers

About 433 people live in Willow Lake, in 111 households. The median household income is $72,875 a year, about the same as the South Dakota median of $75,081 (US: $80,734). The median owner-occupied home is valued at $149,000 (42% below the South Dakota median), and median gross rent is $815 a month. The median age is 17.5; 18.7% of adults 25 and over hold a bachelor's degree or higher (31.9% across South Dakota); the average commute takes 23 minutes.

Population433Willow Lake433
Households111Willow Lake111
Median age17.5Willow Lake17.5South Dakota38.0US 38.9
Median household income$72,875Willow Lake$72,875South Dakota$75,081US $80,734
Median home value$149,000Willow Lake$149,000South Dakota$257,400US $332,700
Median gross rent$815Willow Lake$815South Dakota$946US $1,413
Bachelor's degree or higher18.7%Willow Lake18.7%South Dakota31.9%US 35.7%
Mean commute22.5 minWillow Lake22.5 minSouth Dakota17.8 minUS 26.4 min
Population density1,164 / sq miWillow Lake1,164 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Willow Lake city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Willow Lake

ZIP codes with the USPS city name Willow Lake
ZIP City Type Population Median income Median home
57278 Willow Lake , SD Standard 1,011 $70,208 $220,400

Map of Willow Lake ZIP codes

57278

The ZIP codes of Willow Lake, SD, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Willow Lake

The nearest larger towns are Bryant (727 people, 8.8 mi), De Smet (943 people, 17 mi) and Clark (1,359 people, 18 mi).

More nearby: every ZIP code in Clark County · South Dakota ZIP codes

Cite this page

zipcodes.pro. “Willow Lake, SD ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/sd/willow-lake

Underlying data is public domain or openly licensed — sources, vintages and licences.