| 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: |
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 5× 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.
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.
One ZIP holds the majority of this borough's population — a sign of a county built around a single city or town.
Kodiak Island Borough lost 8.3% of residents between 2014 and 2024.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 99615 | Kodiak | Standard | 12,194 | $88,456 | 4,367.2 | -6.9% |
| 99643 | Old Harbor | PO Box | 162 | $30,000 | 20.6 | -39.6% |
| 99550 | Port Lions | PO Box | 150 | $46,250 | 90.0 | -34.8% |
| 99624 | Larsen Bay | PO Box | 145 | $37,188 | 17.9 | 178.8% |
| 99644 | Ouzinkie | PO Box | 87 | — | 16.6 | -68.7% |
| 99608 | Karluk | PO Box | 33 | — | 36.6 | — |
| 99697 | Kodiak | PO Box | — | — | 0.0 | — |
| 99619 | Kodiak | PO Box | — | — | 0.0 | — |