🇺🇸 United States ZIP Code

STANDARD

98110

Bainbridge Island

ZIP Code 98110 is a standard zip code serving Bainbridge Island, Bainbridge Island, Washington (WA), in Kitsap County, United States. It has an estimated population of 23,025 with a median household income of $95,481. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Washington (WA)
County: Kitsap
City: Bainbridge Island
Timezone: America/Los_Angeles

Coordinates

Latitude: 47.647800
Longitude: -122.538000

Geographic Details

Land Area: 27.61 mi²
Water Area: 11.39 mi²
Population Density: 834.0 people per mi² (75th percentile)
Bounding Box: 47.725658°N, 47.569784°S, -122.474553°E, -122.603728°W

With 23,025 residents spread across 27.61 square miles, this area has a population density of 834.0 people per square mile.

Demographics

23,025

Population

80th percentile

$95,481

Median Income

95th percentile

$551,700

Median Home Value

95th percentile

27.61 mi²

Land Area

The median household income in 98110 is $95,481, and the median home value is $551,700. This places the area in the top 25% nationally for household income.

Housing

10,584

Total Units

9,470

Occupied Units

89.5%

Occupancy Rate

Similar ZIP Codes in Washington

ZIP codes with similar median household income in Washington.

98275

Mukilteo

$93,717

98332

Gig Harbor

$86,174

98199

Seattle

$82,882

98033

Kirkland

$103,250

99338

Kennewick

$99,750

98115

Seattle

$84,159

98005

Bellevue

$84,774

98045

North Bend

$88,906

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.