20857 postal code
United StatesUpdated 2026-11-09Rockville, MarylandMontgomery5 digits
Postal code details
1 placeCode
20857
Place
Rockville
Region
Maryland
County
Montgomery
Coordinates
39.084, -77.1528
Accuracy
4 / 6
Country
United States
Location
OpenStreetMap ↗
39.084, -77.1528© OpenStreetMap
Ad slot · 300×250
Places under this code
1| Place | Region | County | Coordinates |
|---|---|---|---|
| Rockville | Maryland | Montgomery | 39.084, -77.1528 |
Same code in other countries
4| Country | Place | Region |
|---|---|---|
| ID Indonesia | Brandan Barat | North Sumatra |
| IT Italy | Camparada | Lombardia |
| PL Poland | Lublin | Lublin |
| SE Sweden | Malmö | Skåne |
FAQ
Which city is 20857 in?
Rockville, Maryland, United States.
What are the coordinates of 20857?
39.084, -77.1528
Is 20857 used in other countries?
Yes, 4 other countries.
Updated 2026-11-09. Attribution in Data & license.