ZIP Codes of Kodiak Island Borough, AK

Population & People
Population & People
Total Population
12,771
Household Income
Household Income
Median Income
$50,474
Housing
Housing
Total Housing Units
5,835
Business & Economy
Business & Economy
Total Businesses
445
Employment
Employment
Employment Rate
59.96%
Education
Education
Bachelor's Degree+
28.66%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 8 ZIPs in this borough.
Data Last Updated: June 1, 2026
ZIP Codes:8 ZIP Codes (1 Standard, 7 PO Box, 0 Unique) [See All]
Area Code:907
Timezone:Alaska (GMT -09:00)
Local Time:2:11:17 PM
Population:12,771 [See All]
FIPS:02150
Land Area:4,549 sq mi
Water Area:489 sq mi
Coordinates:57.6333, -153.2898
Quick Link:
https://www.zip-codes.com/county/ak-kodiak-island.asp
Need Kodiak Island data in your app? Look up ZIP, county, and city data with a single API call.
Try Free
Alaska's #8 most populous borough
12,771 residents across 8 ZIPs — #8 of 30 Alaska counties.

Standout ZIPs in this Borough


Most Populous
Kodiak · 12,194 people
95.5% of county total
Highest Income
Kodiak · $88,456 median
1.8× county average
Largest Land Area
Kodiak · 4,367.2 sq mi
Spans the most ground
Fastest Growth
Kodiak · -6.9% (10-yr)
13,096 → 12,194 residents
Most Educated
Kodiak · 29.5% bachelor's+
2,358 of 8,005 adults 25+

Things worth knowing about Kodiak Island Borough


12,771 residents live across 8 ZIPs covering 4,549 sq mi, served by 6 distinct USPS-recognized cities.

Population moved from 13,924 to 12,738 from 2014 to 2024 — a -8.5% change. 1 ZIPs gained residents, 4 lost.

The borough's wealthiest ZIP 99615 (Kodiak, $88,456 median) and poorest ZIP 99643 (Old Harbor, $30,000) are 35.3 miles apart — a 2.9× income gap across local geography.

Median home values vary 3.6× across this borough — from $117,500 in 99624 (Larsen Bay) to $424,000 in 99615 (Kodiak).

Density varies across the borough — from 2 people/sq mi in 99550 (Port Lions) to 8 in 99624 (Larsen Bay).

Educational attainment ranges from 2.6% bachelor's+ in 99644 (Ouzinkie) to 29.5% in 99615 (Kodiak) — the breadth of educational profiles across the area.

Within Alaska, this is the #8 most populous of 30 boroughs and ranks #30 for median household income .

Weighted by population, the typical household earns about $86,619 across the borough — reflecting what a typical resident sees, not a simple ZIP average.

28.7% of adults age 25+ hold a bachelor's degree or higher (2,415 of 8,425 reporting).

1 Standard delivery, 7 PO Box only, 0 single-entity Unique ZIPs serve this borough.

Stories about Kodiak Island Borough


Big & sparse

A frontier borough — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
4,549
square miles
Avg density
2.8
people per sq mi
Population
12,771
across 8 ZIPs
Kodiak
4,367.2 sq mi
12,194 residents
Port Lions
90.0 sq mi
150 residents
Karluk
36.6 sq mi
33 residents

Single-ZIP anchor

One ZIP holds the majority of this borough's population — a sign of a county built around a single city or town.

Kodiak

Population decline

Kodiak Island Borough lost 8.3% of residents between 2014 and 2024.

All ZIP Codes in Kodiak Island Borough


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
99615KodiakStandard12,194$88,4564,367.2-6.9%
99643Old HarborPO Box162$30,00020.6-39.6%
99550Port LionsPO Box150$46,25090.0-34.8%
99624Larsen BayPO Box145$37,18817.9178.8%
99644OuzinkiePO Box8716.6-68.7%
99608KarlukPO Box3336.6
99697KodiakPO Box0.0
99619KodiakPO Box0.0

Adjacent & Nearby Counties