Rockville, MD zip codes
Rockville, Maryland has 8 zip codes (4 residential, 4 PO box or single-organization). Most of it is in Montgomery County. Together these zip codes are home to about 145K people.
Zip codes
8
Population
145K
All zips combined
Largest zip
20850
50,353 residents
Income range
$122K–$159K
Median by zip