Rockville, Maryland

8 ZIP codes · Eastern time

ZIP codes (largest first)

20850 · 50,35320852 · 48,18020853 · 31,85120851 · 14,94620847 (PO box)20848 (PO box)20849 (PO box)20857 (PO box)
Population67,671
StateMaryland
CountyMontgomery County
Time zoneEastern
Land area13.57 sq mi

Area codes in this area

227240301

These are the area codes that most often serve Rockville (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Find the ZIP+4 for an address in Rockville

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Population: U.S. Census Bureau, ACS 5-year estimates, 2024.