Area code 206 was brought into effect on January 1, 1947.
Counties in Area Code 206
Most Populous Cities in Area Code 206
|City||County||City Population||Time Zone|
Note: The above list is based off of the top 25 most populous cities in the area code as per 2012 United States Census Bureau estimates.
View all United States Area Codes.
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This page was last modified on July 3, 2015.