County Maps US

Loudon County, Tennessee

A county in Tennessee, ranked 23 of 95 by population.

CountyFIPS 47105

Within Tennessee
Loudon County, highlighted, with the areas around it. Boundaries generalised from the 2025 Census cartographic boundary file; neighbour fills carry no data. The dot marks Loudon, the county seat, located via the 2025 Census Gazetteer.

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Population
63,764
+8,620 (+15.6%) since 2020
Land area
229.3
square miles. A further 7.3% of the total area is water
Population density
278
people per square mile, computed rather than published
County seat
Loudon
Seat of county government.
Established
1870
155 years ago
Largest city
Lenoir City city
Population 12,530.

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; Wikidata (CC0), Wikidata. Retrieved 30 August 2026.

Satellite view

Aerial imagery of Loudon County with its boundary drawn on top. A map shows you the shape; this shows you what is inside it, and which side of the line a place falls on.

Aerial view of Loudon County, Tennessee from the USGS National Map, with its boundary outlined
Imagery: USGS National Map, USGS Imagery Only, public domain, requested from USGS by your browser when you reach this point on the page, at 800 by 661 pixels. The boundary is the 2025 Census cartographic boundary file, reprojected to Web Mercator to match the imagery. You can also open the USGS National Map viewer.

Where Loudon County ranks

Position among the 95 counties of Tennessee, and among all 3,144 US counties and county-equivalents. Computed from the figures on this page.

MeasureValueIn TennesseeNationally
Population63,76423rd of 95856th of 3,144
Land area229.3 sq mi85th of 952,956th of 3,144
Population density278 per sq mi14th of 95466th of 3,144
Median household income$84,1857th of 95446th of 3,143

Full data for Loudon County

Every figure below is attributed to the Census Bureau product it came from, with the vintage of that product.
MeasureValueSource and vintage
Population63,764Vintage 2025 Population Estimates
Population in 202055,144Vintage 2025 Population Estimates
2020 estimates base?54,889Vintage 2025 Population Estimates
Land area229.3 sq mi2025 Gazetteer Files
Water area18.1 sq mi2025 Gazetteer Files
Total area247.4 sq mi2025 Gazetteer Files
Population density?278 per sq miComputed: Vintage 2025 estimates divided by 2025 Gazetteer land area
Median household income$84,185American Community Survey 2020-2024 5-Year Estimates
Median home value$348,000American Community Survey 2020-2024 5-Year Estimates
Median age48.8American Community Survey 2020-2024 5-Year Estimates
Households24,056American Community Survey 2020-2024 5-Year Estimates
Housing units26,043American Community Survey 2020-2024 5-Year Estimates

Sources: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026; US Census Bureau, Gazetteer Files, 2025 Gazetteer Files, released 10 September 2025; US Census Bureau, American Community Survey, American Community Survey 2020-2024 5-Year Estimates, released 29 January 2026. Population density is computed here, not published: it divides the Vintage 2025 population estimate by the 2025 Gazetteer land area, which are two different Census products. Retrieved 30 August 2026.

How the population changed

The Census Bureau publishes the components behind an estimate, not just the total. For the year to July 2025:

Births minus deaths
-175
598 births, 773 deaths
Net migration
+1,298
More people moved in than moved out.

Source: US Census Bureau, Population Estimates Program, Vintage 2025 Population Estimates, released 26 March 2026. Retrieved 30 August 2026.

The 5 areas bordering Loudon County

Ordered by the length of the border actually shared, which the Census Bureau publishes in its county adjacency file and which no other county reference presents.

Bordering areaStateShared borderPopulation
Monroe CountyTennessee43 mi49,730
Roane CountyTennessee40 mi57,395
Blount CountyTennessee18 mi143,820
McMinn CountyTennessee8.8 mi57,404
Knox CountyTennessee8.5 mi511,453

Source: US Census Bureau, County Adjacency File, 2025 County Adjacency File, released 15 September 2025. Retrieved 30 August 2026.

All 95 counties of Tennessee

Open the interactive Tennessee county map, or jump straight to any of them.

Data on this page last rebuilt 30 August 2026. How these figures are produced.