🇺🇸 United States ZIP Code

PO BOX

99840

Skagway

ZIP Code 99840 is a po box zip code serving Skagway, Skagway, Alaska (AK), in Skagway County, United States. It has an estimated population of 968 with a median household income of $71,667. The area falls within the America/Juneau timezone.

On this page

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Alaska (AK)
County: Skagway
City: Skagway
Timezone: America/Juneau

Coordinates

Latitude: 59.468500
Longitude: -135.301800

Geographic Details

Land Area: 452.32 mi²
Water Area: 11.71 mi²
Population Density: 2.0 people per mi²
Bounding Box: 59.799626°N, 59.340621°S, -134.993255°E, -135.722551°W

With 968 residents spread across 452.32 square miles, this area has a population density of 2.0 people per square mile.

Demographics

968

Population

25th percentile

$71,667

Median Income

85th percentile

$305,600

Median Home Value

85th percentile

452.32 mi²

Land Area

The median household income in 99840 is $71,667, and the median home value is $305,600. This places the area in the top 25% nationally for household income.

Housing

636

Total Units

436

Occupied Units

68.6%

Occupancy Rate

Similar ZIP Codes in Alaska

ZIP codes with similar median household income in Alaska.

99504

Anchorage

$75,988

99517

Anchorage

$71,738

99518

Anchorage

$76,057

99559

Bethel

$71,719

99573

Copper Center

$63,676

99576

Dillingham

$67,981

99587

Girdwood

$81,949

99610

Kasilof

$61,625

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.