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Zip Code information for Mason City, Washington.

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Washington Zip Codes

Mason City Zip Codes

What are the Mason City, Washington Zip Codes for 2020, 2019

Primary Zip Codes for Mason City

Zip Code	Primary City	Secondary City
99116	Coulee Dam	Mason City

Cities sharing Zip Codes with Mason City

Zip Code	Primary City	Secondary City	More Information
99116	Coulee Dam	Mason City

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Content provided by the US Census bureau for the years 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024.

The Census Bureau can also provide statisics and demographics for 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009 on their website