🇺🇸 United States ZIP Code

STANDARD

98230

Blaine

ZIP Code 98230 is a standard zip code serving Blaine, Blaine, Washington (WA), in Whatcom County, United States. It has an estimated population of 15,710 with a median household income of $56,641. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Washington (WA)
County: Whatcom
City: Blaine
Timezone: America/Los_Angeles

Coordinates

Latitude: 48.963600
Longitude: -122.732300

Geographic Details

Land Area: 43.76 mi²
Water Area: 4.81 mi²
Population Density: 359.0 people per mi² (65th percentile)
Bounding Box: 49.002445°N, 48.854624°S, -122.550704°E, -122.822464°W

With 15,710 residents spread across 43.76 square miles, this area has a population density of 359.0 people per square mile.

Demographics

15,710

Population

75th percentile

$56,641

Median Income

65th percentile

$249,700

Median Home Value

80th percentile

43.76 mi²

Land Area

The median household income in 98230 is $56,641, and the median home value is $249,700.

Housing

8,802

Total Units

6,553

Occupied Units

74.4%

Occupancy Rate

Nearby ZIP Codes

Other zip codes in Blaine, WA.

98231

Blaine

Similar ZIP Codes in Washington

ZIP codes with similar median household income in Washington.

98178

Seattle

$58,707

99116

Coulee Dam

$50,391

99361

Waitsburg

$51,169

98328

Eatonville

$57,199

98146

Seattle

$56,809

98342

Indianola

$61,477

99139

Ione

$50,819

99301

Pasco

$56,098

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.