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Loudon County, Tennessee Zip Codes
Zip Code
City
Population
37774
Loudon
19,713
37771
Lenoir City
17,802
37772
Lenoir City
13,597
37742
Greenback
6,600
37846
Philadelphia
4,374
Population is the most recent figure from the U.S. Census Bureau's 2022
American Community Survey (ACS) 5-Year Estimates
.