ZIP code 94552
Where is ZIP code 94552?
Castro Valley, California
Alameda County · Standard ZIP code
ZIP code 94552 belongs to Castro Valley, California in Alameda County. 94552 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 341, 510 and 925. About 14,506 people live in the 94552 area, where the median household income is $212,605. The closest ZIP codes are 94546 (Castro Valley, 2.3 mi west), 94542 (Hayward, 3.8 mi south) and 94543 (Hayward, 3.8 mi southwest).
| ZIP code | 94552 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Castro Valley |
| Also accepted | Hayward |
| State | California (CA) |
| County | Alameda County |
| Time zone | Pacific Time · now |
| Area codes | 341, 510, 925 |
| Coordinates | 37.7131, -122.0381 map |
| 3-digit prefix | 945 |
Population and income in 94552
| Population | 14,506 · lower than 52% of California ZIP codes |
|---|---|
| People per square mile | 280 · lower than 60% of California ZIP codes |
| Median age | 48.9 years · higher than 80% of California ZIP codes |
| Men / women | 48% / 52% |
| Median household income | $212,605 · higher than 97% of California ZIP codes |
| Income per person | $78,286 |
| Below the poverty line | 6.5% |
| Bachelor’s degree or higher | 61% of adults 25+ |
| Median home value | $1,394,300 · higher than 89% of California ZIP codes |
| Median rent | $3,197 a month |
| Housing units | 5,088 |
| Households | 5,021 (2.87 people on average) |
| Owners / renters | 93% / 6.8% |
| Land area | 51.8 sq mi (plus 0.02 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 94552. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 94552
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 94546 | Castro Valley, CA | 2.3 mi W | Standard |
| 94542 | Hayward, CA | 3.8 mi S | Standard |
| 94543 | Hayward, CA | 3.8 mi SW | PO Box only |
| 94541 | Hayward, CA | 3.9 mi SW | Standard |
| 94578 | San Leandro, CA | 4.8 mi W | Standard |
| 94544 | Hayward, CA | 5.5 mi S | Standard |
| 94580 | San Lorenzo, CA | 5.5 mi SW | Standard |
| 94583 | San Ramon, CA | 5.6 mi NE | Standard |
| 94568 | Dublin, CA | 6.3 mi E | Standard |
| 94570 | Moraga, CA | 6.3 mi NE | PO Box only |
| 94575 | Moraga, CA | 6.3 mi NE | Standard |
| 94579 | San Leandro, CA | 6.4 mi W | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 94552 or measure the distance to another ZIP code.
How to address mail to 94552
123 MAIN ST
CASTRO VALLEY CA 94552
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts HAYWARD as the city name for 94552. Adding the 4-digit ZIP+4 code (94552-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Castro Valley, CA
All Castro Valley ZIP codes with population and income →
Questions
- What city is ZIP code 94552?
- 94552 is a Castro Valley, California ZIP code. Hayward is also accepted as the city name.
- What county is 94552 in?
- ZIP code 94552 is in Alameda County, California.
- What time zone is ZIP code 94552 in?
- 94552 is in the Pacific Time zone (America/Los_Angeles).
- What area code is 94552?
- Phone numbers in ZIP code 94552 use area codes 341, 510 and 925.
- What is the population of ZIP code 94552?
- About 14,506 people live in ZIP code 94552, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 94552?
- The median household income in 94552 is $212,605 a year, higher than 97% of California ZIP codes.
- What ZIP codes are near 94552?
- The nearest ZIP codes to 94552 are 94546 (Castro Valley, 2.3 miles), 94542 (Hayward, 3.8 miles), 94543 (Hayward, 3.8 miles) and 94541 (Hayward, 3.9 miles).