ZIP code 20857: Rockville, MD
20857 is a PO Box or single-organization ZIP code in Rockville, Maryland, mainly in Montgomery County, part of the Washington-Arlington-Alexandria, DC-VA-MD-WV metro area.
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ZIP codes within 10 milesWithin 25 miles
ZIP code 20857 details
| City | Rockville |
|---|---|
| State | Maryland |
| County | Montgomery County |
| Metro area | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| Time zone | Eastern Time (UTC−5), observes daylight saving time |
| Type | PO Box / single organization |
| Center coordinates | 39.08400, -77.15280 |
ZIP codes near 20857
| ZIP code | City | Distance | Population |
|---|---|---|---|
| 20849 | Rockville, MD | same location | — |
| 20847 | Rockville, MD | same location | — |
| 20883 | Gaithersburg, MD | 0.4 mi | — |
| 20850 | Rockville, MD | 1.5 mi | 50,353 |
| 20851 | Rockville, MD | 1.8 mi | 14,946 |
| 20852 | Rockville, MD | 2.7 mi | 48,180 |
| 20853 | Rockville, MD | 3.4 mi | 31,851 |
| 20855 | Derwood, MD | 3.8 mi | 17,279 |
About ZIP code 20857
What city is ZIP code 20857?
ZIP code 20857 is in Rockville, MD, in Montgomery County.
What county is ZIP code 20857 in?
20857 is mainly in Montgomery County, Maryland.
Why doesn't 20857 have a population?
20857 is a PO Box or single-organization ZIP code. It has a post office location but no residential delivery area, so the Census Bureau reports no population for it.
What time zone is ZIP code 20857 in?
20857 is in Eastern Time (UTC−5). It observes daylight saving time.