🇺🇸 United States ZIP Code

STANDARD

99664

Seward

ZIP Code 99664 is a standard zip code serving Seward, Seward, Alaska (AK), in Kenai Peninsula County, United States. It has an estimated population of 4,932 with a median household income of $62,257. The area falls within the America/Anchorage timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: Alaska (AK)
County: Kenai Peninsula
City: Seward
Timezone: America/Anchorage

Coordinates

Latitude: 60.132900
Longitude: -149.398500

Geographic Details

Land Area: 2566.68 mi²
Water Area: 572.64 mi²
Population Density: 2.0 people per mi²
Bounding Box: 60.734542°N, 59.422981°S, -148.562368°E, -151.002241°W

With 4,932 residents spread across 2566.68 square miles, this area has a population density of 2.0 people per square mile.

Demographics

4,932

Population

55th percentile

$62,257

Median Income

75th percentile

$178,600

Median Home Value

70th percentile

2566.68 mi²

Land Area

The median household income in 99664 is $62,257, and the median home value is $178,600. This places the area in the top 25% nationally for household income.

Housing

2,357

Total Units

1,876

Occupied Units

79.6%

Occupancy Rate

Similar ZIP Codes in Alaska

ZIP codes with similar median household income in Alaska.

99573

Copper Center

$63,676

99603

Homer

$53,797

99835

Sitka

$69,405

99610

Kasilof

$61,625

99652

Big Lake

$62,313

99694

Houston

$56,957

99501

Anchorage

$56,136

99824

Douglas

$62,721

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.