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zipcodes.pro — STATE/TN/COUNTY/LOUDON

Loudon County, TN ZIP codes

Loudon County, TN has 5 ZIP codes, in 4 towns: 37774, 37771, 37772, 37742 and 37846.

The county seat is Loudon.

ZIP codes
5
Towns
4
County seat
Loudon
County FIPS
47105
Population
58,580
Median household income
$84,185
Land area
229 sq mi
Area code
865
Metro area
Knoxville

Loudon County ZIP codes by town

Loudon (county seat)
37774

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Loudon County ZIP codes

3774237771377723777437846

The ZIP codes of Loudon County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Loudon County in numbers

About 58,580 people live in Loudon County, in 24,056 households, the 25th most populous of Tennessee's 95 counties. The median household income is $84,185 a year, 21% above the Tennessee median of $69,595 (US: $80,734). The median owner-occupied home is valued at $348,000 (21% above the Tennessee median), and median gross rent is $1,062 a month. The median age is 48.8; 29.4% of adults 25 and over hold a bachelor's degree or higher (31.1% across Tennessee); the average commute takes 24 minutes.

Population58,580Loudon58,580
Households24,056Loudon24,056
Median age48.8Loudon48.8Tennessee38.9US 38.9
Median household income$84,185Loudon$84,185Tennessee$69,595US $80,734
Median home value$348,000Loudon$348,000Tennessee$286,700US $332,700
Median gross rent$1,062Loudon$1,062Tennessee$1,189US $1,413
Bachelor's degree or higher29.4%Loudon29.4%Tennessee31.1%US 35.7%
Mean commute24.3 minLoudon24.3 minTennessee25.7 minUS 26.4 min
Population density256 / sq miLoudon256 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Loudon County

Largest towns in Loudon County
TownZIP codesPopulation
Lenoir City 2 11,110
Loudon 1 6,432
Greenback 1 1,378
Philadelphia 1 684

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Loudon County.

Not sure you are in Loudon County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Loudon County, with figures

ZIP codes in Loudon County
ZIP City Type Population Median income Median home
37742 Greenback , TN Standard 7,046 $88,983 $301,800
37771 Lenoir City , TN Standard 18,042 $66,938 $279,600
37772 Lenoir City , TN Standard 14,646 $100,711 $429,800
37774 Loudon , TN Standard 21,784 $87,718 $365,100
37846 Philadelphia , TN Standard 4,579 $71,786 $201,700

Cite this page

zipcodes.pro. “Loudon County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/tn/county/loudon

Underlying data is public domain or openly licensed — sources, vintages and licences.