PlainZIP

Hawaii-Aleutian Time Zone ZIP Codes

Source:

America/Adak

Hawaii-Aleutian (America/Adak) is a micro tag here: only 2 ZIP records and ACS population 387. Do not extrapolate coast-scale behavior from this pocket, open each linked ZIP profile.

In this dataset the tag is essentially a AK pocket (2 codes · population 387). Neighboring civil time can still differ across borders, keep the IANA identifier as the durable key.

America/Adak keeps a fixed civil offset year-round (no DST shift in the IANA rules used here). Store the identifier rather than a hard-coded UTC offset. The zone field comes from the SimpleMaps ZIP dataset and is useful for browsing this corpus; it is not a real-time shipping-carrier or device-location service. Population values are ACS 2023 5-Year Estimates.

2

Total ZIP Codes

387

Total Population

1

State abbreviations

Where population concentrates

Top state abbreviations under America/Adak by ACS population (ZIP-tagged, not official political time-zone law).

State ZIP codes Population
AK 2 387

ZIP Codes

Side-by-side: Compare 99546 vs 99547 →

All 2 ZIP codes sorted by population.

ZIP Code City State Population
99546 Adak AK 326
99547 Atka AK 61

What are common questions about ZIP codes in this time zone?

What does a micro Hawaii-Aleutian zone page actually cover? ▼
Only 2 ZIP records carry the America/Adak tag here (combined ACS population 387). Treat this as a precise local pocket, not a coast-to-coast zone, open each ZIP profile rather than extrapolating from a thin sample.
Is the Hawaii-Aleutian tag essentially a single-state pocket? ▼
Yes for this dataset: every America/Adak ZIP sits under AK (2 codes · population 387). Neighboring civil time may still differ across state lines, the IANA string is the durable key, not the state name.
Does Hawaii-Aleutian (America/Adak) change clocks for Daylight Saving Time? ▼
No. America/Adak keeps a fixed civil offset year-round in the IANA rules used here, unlike neighboring DST-observing zones. Applications should still resolve local time from the identifier rather than a hard-coded UTC offset.

Population: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify population data with Census →

Time-zone identifiers: SimpleMaps US ZIP database. IANA publishes the identifier names and time-zone rules.

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Read our methodology to see how this data is sourced, computed, and verified.