What is the main zip code for Hayward, California?

94544 is the most populous Hayward ZIP code in Census data with about 77,712 residents.

What is the area code for Hayward, California?

Hayward, California uses area code 510.

What time zone is Hayward, California in?

Hayward, California is in the Pacific Time Zone.

Hayward, California Zip Codes

Q: How many zip codes does Hayward, California have?

Hayward, California has 7 zip codes in this directory: 4 standard delivery ZIPs and 3 PO Box or unique ZIPs.

Q: What county is Hayward, California in?

Hayward is in Alameda County, California.

📍 Hayward is in Alameda County, California with 7 zip codes; the most populous is 94544.

City

Hayward

County

Alameda

Zip Codes

Area Code

510

Hayward is a USPS city name in Alameda County, California with a Census population of approximately 195,001 across its ZIP codes. Alameda County as a whole has 73 ZIP codes in this directory. Below you'll find every zip code serving Hayward with population, income and home value, a map, and the city's affordability profile.

Population and demographic data sourced from the U.S. Census Bureau American Community Survey (ACS) 5-Year Estimates. ZIP code routing data sourced from the United States Postal Service (USPS).

All Hayward Zip Codes

ZIP Code	City	County	Population	Median Income	Median Home	Details
94540	Hayward	PO Box ZIP	—	—	—	View →
94541	Hayward	Alameda	67,401	$96,176	$750,000	View →
94542	Hayward	Alameda	16,188	$132,747	$1,053,100	View →
94543	Hayward	PO Box ZIP	—	—	—	View →
94544	Hayward	Alameda	77,712	$103,039	$736,300	View →
94545	Hayward	Alameda	33,700	$102,220	$799,300	View →
94557	Hayward	PO Box ZIP	—	—	—	View →

Hayward at a Glance

Residents (ZIPs with data)

195,001

Median household income

$102,630

Median home value

$774,650

Price-to-income ratio

7.8

Median rent

$2,297

Owner-occupied

62%

Bachelor's degree+

31%

Poverty rate

8.8%

Hayward has 7 ZIP codes in this directory: 4 standard delivery ZIPs and 3 PO Box or unique ZIPs that carry no resident population in Census data. The 4 ZIPs with published Census housing data cover 195,001 residents, the largest being 94544 with 77,712 people.

The median ZIP in Hayward has a household income of $102,630 and a home value of $774,650, a price-to-income ratio of 7.8, above the 6.7 California ZIP median. Affordability ranges from 94544 at a ratio of 7.1 to 94542, where the median home is $1,053,100. The highest median income is in 94542 at $132,747. Median rent across these ZIPs is $2,297 a month.

62% of households in the typical Hayward ZIP own their home (statewide ZIP median 64%). 31% of adults hold a bachelor's degree, in line with the 31% statewide median. The median poverty rate is 8.8%, below the 10.8% statewide ZIP median. Overall density is about 4,676 residents per square mile across 42 square miles of ZIP land area.

Medians are taken across the ZIP codes listed below (each ZIP weighted equally); PO Box and no-data ZIPs are excluded. Definitions on the methodology page; statewide comparisons in the 2026 California ZIP Code Affordability Report.