🇺🇸 United States ZIP Code

STANDARD

94559

Napa

ZIP Code 94559 is a standard zip code serving Napa, Napa, California (CA), in Napa County, United States. It has an estimated population of 27,184 with a median household income of $56,895. 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: Napa
Timezone: America/Los_Angeles

Coordinates

Latitude: 38.290400
Longitude: -122.284100

Geographic Details

Land Area: 36.65 mi²
Water Area: 2.23 mi²
Population Density: 742.0 people per mi² (75th percentile)
Bounding Box: 38.311856°N, 38.155216°S, -122.193281°E, -122.407512°W

With 27,184 residents spread across 36.65 square miles, this area has a population density of 742.0 people per square mile.

Demographics

27,184

Population

85th percentile

$56,895

Median Income

65th percentile

$415,200

Median Home Value

90th percentile

36.65 mi²

Land Area

The median household income in 94559 is $56,895, and the median home value is $415,200.

Housing

11,014

Total Units

10,131

Occupied Units

92.0%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Napa, CA.

94558

Napa

94581

Napa

Similar ZIP Codes in California

ZIP codes with similar median household income in California.

95441

Geyserville

$60,357

91767

Pomona

$49,881

91343

North Hills

$54,166

95975

Rough And Ready

$49,688

95525

Blue Lake

$49,934

95667

Placerville

$57,468

93667

Tollhouse

$54,459

92081

Vista

$54,448

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.