🇺🇸 United States ZIP Code

STANDARD

98584

Shelton

ZIP Code 98584 is a standard zip code serving Shelton, Shelton, Washington (WA), in Mason County, United States. It has an estimated population of 36,630 with a median household income of $46,425. The area falls within the America/Los_Angeles timezone.

Median Household Income vs. National Average

Location

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

Coordinates

Latitude: 47.215100
Longitude: -123.100700

Geographic Details

Land Area: 341.00 mi²
Water Area: 36.20 mi²
Population Density: 107.0 people per mi² (50th percentile)
Bounding Box: 47.500984°N, 47.084503°S, -122.814816°E, -123.421696°W

With 36,630 residents spread across 341.00 square miles, this area has a population density of 107.0 people per square mile.

Demographics

36,630

Population

90th percentile

$46,425

Median Income

45th percentile

$200,400

Median Home Value

75th percentile

341.00 mi²

Land Area

The median household income in 98584 is $46,425, and the median home value is $200,400.

Housing

16,557

Total Units

13,635

Occupied Units

82.4%

Occupancy Rate

Similar ZIP Codes in Washington

ZIP codes with similar median household income in Washington.

99159

Odessa

$42,059

98612

Cathlamet

$44,152

98570

Onalaska

$51,106

98661

Vancouver

$39,665

98848

Quincy

$42,325

99217

Spokane

$45,925

98349

Lakebay

$52,802

98101

Seattle

$42,938

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.