Plain

Residential delivery area · South Dakota

ZIP Code 57278: Willow Lake, SD

ZIP code 57278 uses the postal name Willow Lake, South Dakota and lies entirely in Clark County (Census 2020 ZIP-county file). About 1,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $70,208 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Mayfield Colony (under 1%) and Willow Lake (under 1%); more than 99% is outside any Census place.

  • ACS2020-24
  • Census2020
  • ZBP2023
  • IRS2022
5national area: South Dakota, Iowa, Minnesota, Montana, North Dakota and Wisconsin
572sectional center: Dakota Central, SD (SCF 572)
78delivery area within it
Town
Willow Lake · its only residential ZIP
Census places
Mayfield Colony (under 1%) census-designated place; Willow Lake (under 1%)
House district
SD at large 119th Congress
Time zone
Central
Land area
157.6 sq mi · 6 people per sq mi

Where is ZIP code 57278?

57278 centers on 44.649°, -97.681° and covers 157.6 square miles of land plus 1.2 of water. It borders 6 ZIP codes: 57271, 57221, 57322, 57225, 57231, 57353.

57221 · Bryant57225 · Clark57231 · De Smet57271 · Vienna57322 · Carpenter57353 · Iroquois57278 · Willow Lake (this ZIP)5727857225573535723157322572215727157221 · Bryant57225 · Clark57231 · De Smet57271 · Vienna57322 · Carpenter57353 · Iroquois57278 · Willow Lake (this ZIP)5727857225573535723157322572215727157221 · Bryant57225 · Clark57231 · De Smet57271 · Vienna57322 · Carpenter57353 · Iroquois57278 · Willow Lake (this ZIP)57278572255735357231573225722157271
Shaded by median household income, in national fifths (ACS 2020-2024); 57278 outlined. Census 2020 ZCTA boundaries. <$54.1k$98.1k+no figure

The map draws ZIP code areas only. For the streets inside 57278, open its center on OpenStreetMap.

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).

How does 57278 compare with the rest of Clark County?

Rank of 57278 among the residential ZIP codes of its town, county and state (1 = the most; income and home value among ZIP codes of 1,000+ people living in households)
Measure57278In Clark CountyIn SD
People (ACS 2020-2024)1,0114th of 13139th of 375
Median household income$70k2nd of 372nd of 107
Median home value$220k2nd of 464th of 109

Its median household income is higher than in 47% of U.S. residential ZIP codes, and it is denser than 13% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).

How many people live in 57278?

The 2020 Census counted 837 people in 57278; the ACS, which samples households over 2020-2024, estimates 1,011. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.

People, ACS 2020-2024
1,011±228 (90% margin)
2020 Census count
837
Households
255
Median age
24.6

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).

Who lives in 57278?

Of the 1,011 people the ACS estimates in 57278, 41.9% are under 18 and 13.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.3%).

  • Under 1841.9%
  • 18 to 6444.7%
  • 65 and older13.4%
Age of the people of 57278 (ACS 2020-2024, B01001)
  • White, not Hispanic92.3%
  • Other or two or more3.8%
  • Asian, not Hispanic1.7%
  • Black, not Hispanic1.6%
  • Hispanic or Latino0.7%
Race and Hispanic origin in 57278 (ACS 2020-2024, B03002); each person counted once

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.

What do households in 57278 earn?

Median household income is $70,208 (ACS 2020-2024), the 2nd highest of the 3 ranked ZIP codes in Clark County.

Median household income
$70,208±$12,825
Income per person
$25,003
Below the poverty line
6.7%
Unemployed (of the labor force)
0.0%
Adults 25+ with a bachelor's degree
25.5%
Adjusted gross income per tax return, 2022
$82,359370 returns; wages 35% of AGI (IRS)

Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).

What are homes worth in 57278?

Median home value (owners' estimate)
$220,400
Median gross rent
$808
Homes owned by their occupants
77.6%
Housing units
285

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001).

What businesses are in 57278?

25 business establishments had a location in this ZIP code in 2023, 2 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).

  • Construction9
  • Finance and insurance3
  • Accommodation and food services3

Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).

Which ZIP codes are next to 57278?

ZIP codes that share a boundary with 57278, then the nearest by center
ZIPTownPeopleHousehold incomeDistance
57271Vienna246$86k10.3 mi
57221Bryant1,158$74k12.1 mi
57322Carpenter378$72k13.8 mi
57225Clark1,833$67k16.4 mi
57231De Smet1,724$79k19.5 mi
57353Iroquois812$76k20.7 mi
57233Erwin350$83k16.9 mi (near)
57242Hazel320$114k18.1 mi (near)
57386Yale240$76k18.4 mi (near)

Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.