🇺🇸 United States ZIP Code

STANDARD

94577

San Leandro

ZIP Code 94577 is a standard zip code serving San Leandro, San Leandro, California (CA), in Alameda County, United States. It has an estimated population of 45,560 with a median household income of $63,388. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: Alameda
City: San Leandro
Timezone: America/Los_Angeles

Coordinates

Latitude: 37.720500
Longitude: -122.158700

Geographic Details

Land Area: 8.15 mi²
Water Area: 1.37 mi²
Population Density: 5591.0 people per mi² (95th percentile)
Bounding Box: 37.742499°N, 37.666758°S, -122.122274°E, -122.209269°W

With 45,560 residents spread across 8.15 square miles, this area has a population density of 5591.0 people per square mile.

Demographics

45,560

Population

95th percentile

$63,388

Median Income

75th percentile

$378,200

Median Home Value

90th percentile

8.15 mi²

Land Area

The median household income in 94577 is $63,388, and the median home value is $378,200. This places the area in the top 25% nationally for household income.

Housing

17,714

Total Units

16,710

Occupied Units

94.3%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in San Leandro, CA.

94578

San Leandro

94579

San Leandro

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

92117

San Diego

$64,026

95425

Cloverdale

$57,379

95316

Denair

$70,269

95472

Sebastopol

$68,223

95127

San Jose

$68,379

92040

Lakeside

$64,044

92036

Julian

$65,869

95833

Sacramento

$56,280

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.