Find the last 4 digits (ZIP+4) for an address in 94505

ZIP 94505, Discovery Bay, CA is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 94505 – Discovery Bay, CA

Discovery Bay, California · Contra Costa County · Pacific time

ZIP code94505
CityDiscovery Bay
StateCalifornia
CountyContra Costa CountyAlameda CountySan Joaquin County
Population14,970
Time zonePacific · local time
ZIP typeStandard (has a Census ZCTA area)
Land area16.67 sq mi
Center (lat, long)37.8713, -121.5970

Area codes in this area

925

These are the area codes that most often serve ZIP 94505 (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

94514 Byron · 3.7 mi94513 Brentwood · 6.1 mi95391 Tracy · 6.2 mi94548 Knightsen · 7.7 mi95208 Stockton · 9.7 mi94561 Oakley · 9.9 mi95234 Holt · 10.3 mi94511 Bethel Island · 11 mi

About ZIP 94505

ZIP code 94505 is assigned to Discovery Bay, California. It crosses 3 counties; most of its land is in Contra Costa County. Its Census area covers about 16.67 square miles of land. The closest neighboring ZIP is 94514 (Byron), about 3.7 miles away.

Every address in 94505 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