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Zip Code information for Longmont, Colorado.

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Colorado Zip Codes

Longmont Zip Codes

What are the Longmont, Colorado Zip Codes for 2020, 2019

Primary Zip Codes for Longmont

Zip Code	Primary City	Secondary City
80501	Longmont
80502	Longmont
80503	Longmont	Niwot
80504	Longmont	Longmont, Niwot, Firestone, Frederick

Cities sharing Zip Codes with Longmont

Zip Code	Primary City	Secondary City	More Information
80503	Longmont	Niwot	Niwot population stats
80504	Longmont	Firestone	Firestone population stats
80504	Longmont	Frederick	Frederick population stats
80504	Longmont	Niwot	Niwot population stats

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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