ZIP code 94505
Where is ZIP code 94505?
Discovery Bay, California
Contra Costa County · Standard ZIP code
ZIP code 94505 belongs to Discovery Bay, California in Contra Costa County. 94505 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Pacific Time zone and uses area codes 209, 350 and 925. About 14,970 people live in the 94505 area, where the median household income is $146,480. The closest ZIP codes are 94513 (Brentwood, 5.1 mi northwest), 94514 (Byron, 5.2 mi south) and 94548 (Knightsen, 6 mi northwest).
| ZIP code | 94505 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Discovery Bay |
| Also accepted | Byron |
| State | California (CA) |
| County | Contra Costa County |
| Time zone | Pacific Time · now |
| Area codes | 209, 350, 925 |
| Coordinates | 37.8989, -121.6054 map |
| 3-digit prefix | 945 |
Population and income in 94505
| Population | 14,970 · lower than 51% of California ZIP codes |
|---|---|
| People per square mile | 898 · higher than 51% of California ZIP codes |
| Median age | 45.8 years · higher than 74% of California ZIP codes |
| Men / women | 49% / 51% |
| Median household income | $146,480 · higher than 86% of California ZIP codes |
| Income per person | $64,094 |
| Below the poverty line | 7.4% |
| Bachelor’s degree or higher | 33% of adults 25+ |
| Median home value | $830,500 · higher than 64% of California ZIP codes |
| Median rent | $3,029 a month |
| Housing units | 6,092 |
| Households | 5,446 (2.74 people on average) |
| Owners / renters | 90% / 9.8% |
| Land area | 16.67 sq mi (plus 5.79 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 94505. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 94505
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 94513 | Brentwood, CA | 5.1 mi NW | Standard |
| 94514 | Byron, CA | 5.2 mi S | Standard |
| 94548 | Knightsen, CA | 6 mi NW | PO Box only |
| 94561 | Oakley, CA | 8.5 mi NW | Standard |
| 94511 | Bethel Island, CA | 9.1 mi N | PO Box only |
| 95208 | Stockton, CA | 9.5 mi E | PO Box only |
| 95391 | Tracy, CA | 9.6 mi S | Standard |
| 95234 | Holt, CA | 10.1 mi E | PO Box only |
| 94531 | Antioch, CA | 10.4 mi NW | Standard |
| 94509 | Antioch, CA | 12.9 mi NW | Standard |
| 94551 | Livermore, CA | 13.5 mi SW | Standard |
| 95376 | Tracy, CA | 14.5 mi SE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 94505 or measure the distance to another ZIP code.
How to address mail to 94505
123 MAIN ST
DISCOVERY BAY CA 94505
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts BYRON as the city name for 94505. Adding the 4-digit ZIP+4 code (94505-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 94505?
- 94505 is a Discovery Bay, California ZIP code. Byron is also accepted as the city name.
- What county is 94505 in?
- ZIP code 94505 is in Contra Costa County, California.
- What time zone is ZIP code 94505 in?
- 94505 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 94505?
- Phone numbers in ZIP code 94505 use area codes 209, 350 and 925.
- What is the population of ZIP code 94505?
- About 14,970 people live in ZIP code 94505, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 94505?
- The median household income in 94505 is $146,480 a year, higher than 86% of California ZIP codes.
- What ZIP codes are near 94505?
- The nearest ZIP codes to 94505 are 94513 (Brentwood, 5.1 miles), 94514 (Byron, 5.2 miles), 94548 (Knightsen, 6 miles) and 94561 (Oakley, 8.5 miles).