ZIP code · Agar · South Dakota · United States
ZIP code 57520 — Agar
ZIP code 57520 serves Agar, South Dakota.
- Postal code
- 57520Single source Value from one source, not cross-checked.
- City
- Agar
- County
- Sully FIPS 46119
- State
- South Dakota
- Country
- United States
- Coordinates
- 44.8393, -100.0712 — precision precise (locality)
View on OpenStreetMap - Population
- 127 (ZCTA, ACS 5-year)
- Population density
- 1 / sq mi
- Land area
- 157.4 sq mi (407.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $46,875
- Per-capita income
- $39,579
- Median age
- 63.4
- Households
- 83
- Housing units
- 127
- Median home value
- $113,800
- Median gross rent
- $850 / 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 (from the nearest rate centre)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.
Tools: compare 57520 with another ZIP · ZIPs within 25 miles · distance from 57520
Map of ZIP code 57520
Climate — monthly normals
Warmest month Jul (avg high 87°F), coldest Jan (avg low 7°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 27 | 31 | 44 | 58 | 69 | 80 | 87 | 85 | 77 | 60 | 43 | 30 |
| Avg low °F | 7 | 11 | 22 | 33 | 45 | 56 | 61 | 59 | 49 | 36 | 23 | 12 |
| Precip in | 0.5 | 0.8 | 1.0 | 2.0 | 3.2 | 3.6 | 2.5 | 2.5 | 1.8 | 1.9 | 0.7 | 0.6 |
NOAA 1991–2020 climate normals from the nearest station: ONIDA 4 NW (8.2 mi) · NOAA NCEI
Places in ZIP 57520
- 1 parks
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