Arcata CA ZIP Code
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Arcata city is located in California State, Humboldt County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Arcata CA zip code by its streets and block numbers if we have some of the Arcata streets loaded in our website
Arcata Area Code is 707 and Time Zone is Pacific (GMT -08:00).
Arcata Zip Code - California
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Arcata City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Arcata ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Arcata, California.
The Arcata Zip Code is 95518, 95521.
If you want to send a mail to Arcata City, you should use the 95518, 95521 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Arcata ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 95518, 95521 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Arcata city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in California.