ZIP code · Gary · South Dakota · United States

ZIP code 57237 — Gary

ZIP code 57237 serves Gary, South Dakota.

Postal code
57237
Single source Value from one source, not cross-checked.
City
Gary
County
Deuel FIPS 46039
State
South Dakota
Country
United States
Coordinates
44.8270, -96.5044 — precision precise (locality)
View on OpenStreetMap
Population
671 (ZCTA, ACS 5-year)
Population density
7 / sq mi
Land area
98.5 sq mi (255.1 km²) (ZCTA, ACS 5-year)
Median household income
$84,359
Per-capita income
$45,516
Median age
53.2
Households
298
Housing units
381
Median home value
$154,000
Median gross rent
$479 / month
Congressional district
SD At-large (119th Congress)
USDA hardiness zone
4b (-25 to -20 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Chicago (UTC−6 / UTC−5 DST)
Area code
605
Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.

Climate — monthly normals

Warmest month Jul (avg high 80°F), coldest Jan (avg low 2°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F212638536675807870564026
Avg low °F271831445560584935219
Precip in0.70.81.62.53.44.53.33.43.02.41.10.9

NOAA 1991–2020 climate normals from the nearest station: CLEAR LAKE (10.0 mi) · NOAA NCEI

Places in ZIP 57237

Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology

About this page

US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.

GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page