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Zip Code information for Allen, Maryland.

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Allen Zip Codes

What are the Allen, Maryland Zip Codes for 2020, 2019

Primary Zip Codes for Allen

Zip Code	Primary City	Secondary City
21810	Allen

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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