ZIP Code 20878 – Gaithersburg, Maryland | ZipsCode.us
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ZIP Code 20878
Gaithersburg, Maryland · Montgomery
ZIP code 20878 belongs to the city of Gaithersburg in Maryland (Montgomery). See all Maryland ZIP Codes.
ZIP code 20878 belongs to Gaithersburg, Maryland, in Montgomery. If you are mailing a letter or package to this area, use Gaithersburg, MD 20878 in the address. On this page you will find the city and county for 20878, nearby ZIP codes in the same county, and free tools to look up any address in this ZIP code.
What City Is ZIP Code 20878?
The city for ZIP code 20878 is Gaithersburg, Maryland. When you write an address in this area, the correct format is: Name, Street Address, Gaithersburg, MD 20878.
ZIP Code 20878 County and State
ZIP code 20878 is located in Montgomery, Maryland. For a complete list of cities and ZIP codes across the state, see the Maryland ZIP Codes page.
Nearby ZIP Codes in Montgomery
These ZIP codes are in the same county as 20878:
ZIP Code 20878 on the Map
The map below shows the approximate center of ZIP code 20878, near Gaithersburg, Maryland. You can zoom in and drag the map to explore the area.
Map center is approximate (ZIP area center, around 39.1125, -77.2515). Map data © OpenStreetMap.
Population and Demographics of ZIP Code 20878
According to public U.S. Census Bureau data, ZIP code 20878 is home to a community in Maryland. The figures below come from the U.S. Census and the American Community Survey (ACS).
Source: U.S. Census Bureau, American Community Survey (ACS) 2023 5-year estimates and 2023 Gazetteer. Figures are estimates and change with each new survey.
Find an Address in ZIP Code 20878
Need the full ZIP+4 code for a specific street address in Gaithersburg? Use the free ZIP+4 Lookup tool, or find any ZIP code from a street address with the ZIP Code by Address tool.
Frequently Asked Questions
What city is ZIP code 20878?
ZIP code 20878 is for Gaithersburg, Maryland.
What county is ZIP code 20878 in?
ZIP code 20878 is in Montgomery, Maryland.
What state is ZIP code 20878 in?
ZIP code 20878 is in Maryland (MD).
How do I find the ZIP+4 for an address in 20878?
Use the free ZIP+4 Lookup tool with the full street address to get the complete 9-digit ZIP code.
What are the nearby ZIP codes to 20878?
Nearby ZIP codes include 20810 (Bethesda), 20811 (Bethesda), 20812 (Glen Echo), 20813 (Bethesda), 20814 (Bethesda).
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