Groton, SD ZIP code
The ZIP code for Groton, South Dakota is 57445. It is in Brown County.
- Population in these ZIPs
- 2,072
- Avg. median income
- $84,900population-weighted
- Typical home value
- $244,300population-weighted
- Metro area
- Aberdeen, SD
Loading map…
Click anywhere on the map to see which ZIP code it's in.
Groton, SD ZIP code list
| ZIP code | Population | Median income | Typical home value |
|---|---|---|---|
| 57445 | 2,072 | $84,948 | $244,300 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities near Groton
Frequently asked questions
What is the ZIP code for Groton, SD?
The ZIP code for Groton, SD is 57445.
What county is Groton, South Dakota in?
Groton ZIP codes are in Brown County.