🇺🇸 United States ZIP Code

STANDARD

94508

Angwin

ZIP Code 94508 is a standard zip code serving Angwin, Angwin, California (CA), in Napa County, United States. It has an estimated population of 3,661 with a median household income of $60,855. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: California (CA)
County: Napa
City: Angwin
Timezone: America/Los_Angeles

Coordinates

Latitude: 38.576900
Longitude: -122.447700

Geographic Details

Land Area: 17.45 mi²
Water Area: 0.16 mi²
Population Density: 210.0 people per mi² (60th percentile)
Bounding Box: 38.612440°N, 38.541719°S, -122.393522°E, -122.488549°W

With 3,661 residents spread across 17.45 square miles, this area has a population density of 210.0 people per square mile.

Demographics

3,661

Population

50th percentile

$60,855

Median Income

75th percentile

$619,400

Median Home Value

95th percentile

17.45 mi²

Land Area

The median household income in 94508 is $60,855, and the median home value is $619,400. This places the area in the top 25% nationally for household income.

Housing

1,213

Total Units

1,068

Occupied Units

88.0%

Occupancy Rate

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

91206

Glendale

$52,570

95128

San Jose

$66,533

95946

Penn Valley

$60,750

95111

San Jose

$57,120

95320

Escalon

$55,688

95834

Sacramento

$55,177

91304

Canoga Park

$58,889

95117

San Jose

$63,465

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.