Clarksburg, Maryland

1 ZIP code · Eastern time

ZIP codes (largest first)

20871 · 30,182
Population30,487
StateMaryland
CountyMontgomery County
Time zoneEastern
Land area9.64 sq mi

Area codes in this area

227240301

These are the area codes that most often serve Clarksburg (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 Clarksburg

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