How many zip codes are in Rockville MD?
James Olson
Updated on April 18, 2026
Rockville, MD Covers 8 ZIP Codes
| ZIP Code | Area Code(s) | Classification |
|---|---|---|
| 20851 | 301/240 | Non-Unique |
| 20852 | 301/240 | Non-Unique |
| 20853 | 301/240 | Non-Unique |
| 20857 | 301/240 | Unique |
Herein, what county is ZIP code 20850 in?
Montgomery County
Furthermore, what is the area code for Rockville Maryland? Area code 301 is located in western Maryland and covers Germantown, Silver Spring, Waldorf, Frederick, and Rockville. It has a single overlay (240) that serves the same area.
Also Know, where is the zip code 20852?
Rockville, MD North Bethesda, MD Rollins Park, MD
What are the zip codes in Maryland?
| Rank | Zip Code | Population |
|---|---|---|
| 1 | 20906 | 70,749 |
| 2 | 21234 | 68,381 |
| 3 | 20878 | 63,030 |
| 4 | 21740 | 61,768 |
Related Question Answers
What is Olney zip code?
20830 20832 20833 20853 20860What is Silver Springs ZIP code?
| Silver Spring, Maryland | |
|---|---|
| ZIP Codes | 20901–20907 20910 |
| Area codes | 301, 240 |
| FIPS code | 24-72450 |
| GNIS feature ID | 0591290 |
