Loudon County area

Population and density of Loudon County

The Census Bureau estimates that 63,764 people lived in Loudon County on July 1, 2025. That ranks #867 of 3,222 county equivalents nationally and #23 of 95 in Tennessee. Since the April 1, 2020 estimates base of 54,889, the population has grown by 8,875 (+16.2%), compared with +5.8% for Tennessee as a whole.

With 229.3 square miles of land, that is 278 people per square mile (107 per km²), placing Loudon County #537 nationally for density and #14 in Tennessee. The median county equivalent has 47 people per square mile; the Tennessee median is 76. Put another way, there are about 2.3 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Loudon County

5 incorporated places lie at least partly in Loudon County. Together they are home to 21,448 people (33.6%); the other 42,316 (66.4%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Lenoir City city, with 12,530 residents in the county. The county seat, Loudon city, has 6,963 residents. By land, Farragut town is the largest at 16 mi² across all its counties. Among places with at least 1,000 residents in 2020, Lenoir City city grew fastest since then (+24.2%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Loudon County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Loudon County is a central county of the Knoxville, TN Metropolitan Statistical Area. Its 9 county equivalents have 968,137 residents on 3,501 square miles of land; Loudon County accounts for 6.5% of the land and 6.6% of the residents. By combined land it ranks #81 of 393 metropolitan areas, and #61 by population. It belongs to the Knoxville-Morristown-Sevierville, TN Combined Statistical Area.

ZIP codes

9 ZIP Code Tabulation Areas have land in Loudon County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.

377373774237771377723777437846378743788537922

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Loudon County

Loudon County shares a land border with 5 county equivalents. Each of them has more land than Loudon County. The largest neighbor is Monroe County (635.8 mi²) and the smallest is Roane County (360.8 mi²). Together with its neighbors, Loudon County forms a block of 2,723.2 mi² of land, of which it holds 8.4%.

How big is Loudon County compared with U.S. states?

Loudon County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 4.5 times as much. Tennessee’s county land could hold about 180 areas the size of Loudon County.

Another way to picture it: the same land area would fill a square about 15.1 miles (24.4 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Loudon County?

Loudon County has more land than 266 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Loudon County at #2,957 nationally by total area, 1 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 7.3%, compared with a national county-equivalent median of 1.2% — 6.1 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Loudon County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.