Summertown is an unincorporated community and census-designated place in Lawrence County, Tennessee, United States. The population of Summertown was 866 at the 2010 census. The community has a ZIP Code of 38483. Some rural areas in neighboring Lewis and Maury counties also use a "Summertown" mailing address, but their populati…Summertown is an unincorporated community and census-designated place in Lawrence County, Tennessee, United States. The population of Summertown was 866 at the 2010 census. The community has a ZIP Code of 38483. Some rural areas in neighboring Lewis and Maury counties also use a "Summertown" mailing address, but their population is not included in the Census figures.
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