ZIP code · Belvidere · South Dakota · United States

ZIP code 57521 — Belvidere

ZIP code 57521 serves Belvidere, South Dakota.

Postal code
57521
Single source Value from one source, not cross-checked.
City
Belvidere
County
Jackson FIPS 46071
State
South Dakota
Country
United States
Coordinates
43.8860, -101.2387 — precision precise (locality)
View on OpenStreetMap
Population
245 (ZCTA, ACS 5-year)
Population density
1 / sq mi
Land area
427.9 sq mi (1,108.2 km²) (ZCTA, ACS 5-year)
Median household income
$50,521
Per-capita income
$9,332
Median age
14.5
Households
51
Housing units
87
Median home value
$37,100
Congressional district
SD At-large (119th Congress)
USDA hardiness zone
5a (-20 to -15 °F)
Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
Time zone
America/Denver (UTC−7 / UTC−6 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 89°F), coldest Jan (avg low 8°F).

JanFebMarAprMayJunJulAugSepOctNovDec
Avg high °F343849617181898879634836
Avg low °F81222324454605848342011

NOAA 1991–2020 climate normals from the nearest station: MIDLAND (13.2 mi) · NOAA NCEI

Places in ZIP 57521

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