Gaithersburg, Maryland ZIP codes
What is the ZIP code for Gaithersburg, MD?
9 ZIP codes, 20877 to 20899
4 for street addresses · 4 PO Box only · 1 for single organizations
Gaithersburg is in Montgomery County, Maryland. USPS uses 9 ZIP codes for Gaithersburg, 4 of them for street addresses. About 143,733 people live in Gaithersburg ZIP codes; the most populated is 20878 with 66,115 residents. The city is in the Eastern Time zone and uses area codes 240, 227, 301, 410, 443 and 667.
| City | Gaithersburg, MD |
|---|---|
| State | Maryland |
| County | Montgomery County |
| ZIP codes | 9 |
| Population (ZIP areas) | about 143,733 |
| Time zone | Eastern Time · now |
| Area codes | 240, 227, 301, 410, 443, 667 |
All Gaithersburg ZIP codes
| ZIP code | Type | Population | Median income |
|---|---|---|---|
| 20877 | Standard | 38,546 | $92,800 |
| 20878 | Standard | 66,115 | $144,313 |
| 20879 | Standard | 25,264 | $112,104 |
| 20882 | Standard | 13,751 | $184,136 |
| 20883 | PO Box only | – | – |
| 20884 | PO Box only | – | – |
| 20885 | PO Box only | – | – |
| 20898 | PO Box only | – | – |
| 20899 | Unique | 57 | $24,417 |
Population and income: U.S. Census Bureau, American Community Survey 5-year estimates. PO Box and single-organization ZIP codes have no residents.
Other ZIP codes that accept “Gaithersburg”
These ZIP codes belong to a neighboring city, but USPS also accepts Gaithersburg as the city name in addresses.
Cities near Gaithersburg
- Montgomery Village, MD 0.8 mi
- Derwood, MD 3.2 mi
- Germantown, MD 3.5 mi
- Olney, MD 6.4 mi
- Clarksburg, MD 6.9 mi
- Rockville, MD 7.1 mi
- Brookeville, MD 7.3 mi
- Boyds, MD 7.3 mi
- Damascus, MD 7.7 mi
- Potomac, MD 8.7 mi
Questions
- What is the ZIP code for Gaithersburg, MD?
- Gaithersburg has 9 ZIP codes: 20877, 20878, 20879, 20882, 20883 and 20884 and 3 more. The right one depends on the street address.
- How many ZIP codes does Gaithersburg have?
- 9: 4 standard ZIP codes for street addresses, 4 for PO Boxes only and 1 assigned to single organizations.
- Which Gaithersburg ZIP code has the most people?
- 20878, with about 66,115 residents, followed by 20877 (38,546).
- What county is Gaithersburg, MD in?
- Gaithersburg ZIP codes are in Montgomery County.
- What area code is Gaithersburg, MD?
- Gaithersburg uses area codes 240, 227, 301, 410, 443 and 667.