ZIP code · Flandreau · South Dakota · United States
ZIP code 57028 — Flandreau
ZIP code 57028 serves Flandreau, South Dakota.
- Postal code
- 57028Single source Value from one source, not cross-checked.
- City
- Flandreau
- County
- Moody FIPS 46101
- State
- South Dakota
- Country
- United States
- Coordinates
- 44.0658, -96.6222 — precision precise (locality)
View on OpenStreetMap - Population
- 3,112 (ZCTA, ACS 5-year)
- Population density
- 15 / sq mi
- Land area
- 200.8 sq mi (520 km²) (ZCTA, ACS 5-year)
- Median household income
- $66,735
- Per-capita income
- $32,850
- Median age
- 40.1
- Households
- 1,274
- Housing units
- 1,467
- Median home value
- $175,400
- Median gross rent
- $661 / 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
- 605Telephone 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.
Tools: compare 57028 with another ZIP · ZIPs within 25 miles · distance from 57028
Map of ZIP code 57028
Climate — monthly normals
Warmest month Jul (avg high 81°F), coldest Jan (avg low 4°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 23 | 28 | 40 | 54 | 67 | 77 | 81 | 79 | 72 | 58 | 41 | 28 |
| Avg low °F | 4 | 7 | 19 | 31 | 45 | 56 | 60 | 57 | 48 | 34 | 21 | 10 |
| Precip in | 0.5 | 0.8 | 1.3 | 2.7 | 4.1 | 4.5 | 3.8 | 3.6 | 3.1 | 2.2 | 1.0 | 0.8 |
NOAA 1991–2020 climate normals from the nearest station: FLANDREAU (1.7 mi) · NOAA NCEI
Places in ZIP 57028
- 4 schools
- 1 hospitals & clinics
- 1 pharmacies
- 2 supermarkets
- 5 restaurants & cafés
- 2 bars & pubs
- 1 parks
- 5 playgrounds
- 1 gyms & sports centres
- 1 libraries
- 1 post offices
- 9 places of worship
- 2 banks
- 3 gas stations
- 2 police & fire stations
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