Rockville, MD ZIP codes
Rockville, Maryland has 8 ZIP codes, including 4 PO Box ZIPs. They are in Montgomery County.
- Population in these ZIPs
- 145,330
- Avg. median income
- $132,100population-weighted
- Typical home value
- $599,200population-weighted
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Rockville, MD ZIP codes list
| ZIP code | County | Population | Median income | Typical home value |
|---|---|---|---|---|
| 20847 PO Box | Montgomery County | — | — | — |
| 20848 PO Box | Montgomery County | — | — | — |
| 20849 PO Box | Montgomery County | — | — | — |
| 20850 | Montgomery County | 50,353 | $125,950 | $671,000 |
| 20851 | Montgomery County | 14,946 | $126,411 | $530,100 |
| 20852 | Montgomery County | 48,180 | $122,472 | $529,400 |
| 20853 | Montgomery County | 31,851 | $159,080 | $623,800 |
| 20857 PO Box | Montgomery County | — | — | — |
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 Rockville
- Derwood 3 mi
- Potomac 4 mi
- Washington Grove 4 mi
- Garrett Park 5 mi
- Gaithersburg 5 mi
- Bethesda 5 mi
- Kensington 6 mi
- Olney 6 mi
- Germantown 7 mi
- Sandy Spring 7 mi
- Montgomery Village 7 mi
- Chevy Chase 8 mi
Frequently asked questions
What is the ZIP code for Rockville, MD?
Rockville, MD has 8 ZIP codes: 20847, 20848, 20849, 20850, 20851, 20852, 20853 and 20857.
What county is Rockville, Maryland in?
Rockville ZIP codes are in Montgomery County.
Which Rockville ZIP codes are PO Boxes?
20847, 20848, 20849 and 20857 are PO Box or single-organization ZIP codes; they have no residential delivery area.