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🇺🇸 United States ZIP Code

PO BOX

99606

Iliamna

ZIP Code 99606 is a po box zip code serving Iliamna, Iliamna, Alaska (AK), in Lake and Peninsula County, United States. It has an estimated population of 469 with a median household income of $50,625. The area falls within the America/Anchorage timezone.

Median Household Income vs. National Average

$0 National: $37,585 $150K+ $50,625

Location

Country
🇺🇸 United States
State / Province
Alaska (AK)
County
Lake and Peninsula
City
Iliamna
Timezone
America/Anchorage

Coordinates

Latitude
59.752500
Longitude
-154.823600

Geographic Details

Land Area
208.36 mi²
Water Area
5.20 mi²
Population Density
2.0 people per mi²
Bounding Box
59.993289°N, 59.369785°S, -154.260936°E, -154.982369°W

With 469 residents spread across 208.36 square miles, this area has a population density of 2.0 people per square mile.

Demographics

469

Population

15th percentile

$50,625

Median Income

55th percentile

$168,800

Median Home Value

65th percentile

208.36 mi²

Land Area

The median household income in 99606 is $50,625, and the median home value is $168,800.

Housing

177

Total Units

141

Occupied Units

79.7%

Occupancy Rate

Similar ZIP Codes in Alaska

ZIP codes with similar median household income in Alaska.

99501

Anchorage

$56,136

 99503

Anchorage

$45,217

 99508

Anchorage

$56,856

 99556

Anchor Point

$49,563

 99603

Homer

$53,797

 99639

Ninilchik

$44,091

 99674

Sutton

$43,333

 99676

Talkeetna

$45,662

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.