Find the last 4 digits (ZIP+4) for an address in 20170

ZIP 20170, Herndon, VA is filled in. Just type the street address.

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ZIP Code 20170 – Herndon, VA

Herndon, Virginia · Fairfax County · Eastern time

ZIP code20170
CityHerndon
StateVirginia
CountyFairfax County
Population43,866
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area8.76 sq mi
Center (lat, long)38.9798, -77.3798

Area codes in this area

703571

These are the area codes that most often serve ZIP 20170 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

20172 Herndon · 0.8 mi22095 Herndon · 0.8 mi20194 Reston · 2.1 mi20164 Sterling · 2.3 mi20190 Reston · 2.5 mi20163 Sterling · 3.2 mi20167 Sterling · 3.2 mi20191 Reston · 3.6 mi

About ZIP 20170

ZIP code 20170 is assigned to Herndon, Virginia. It lies in Fairfax County. Its Census area covers about 8.76 square miles of land. The closest neighboring ZIP is 20172 (Herndon), about 0.8 miles away.

Every address in 20170 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources