County outline
Where Henderson County is located
Area breakdown
Land accounts for 98.9% of Henderson County’s measured area and water for 1.1%. Its combined area converts to 1,362 square kilometers or approximately 336,566 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 520.009 | 1,346.817 | 332,805.8 |
| Water | 5.876 | 15.219 | 3,760.6 |
| Total | 525.885 | 1,362.036 | 336,566.4 |
How Henderson County compares
By original Census land area, Henderson County ranks #34 of 95 in Tennessee and #2005 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.192 times the Tennessee county-equivalent median of 436.1 square miles. It accounts for 1.3% of the combined county land area in the state.
See the complete Tennessee ranking · What counts as a county equivalent?
Population and density of Henderson County
The Census Bureau estimates that 28,518 people lived in Henderson County on July 1, 2025. That ranks #1,535 of 3,222 county equivalents nationally and #54 of 95 in Tennessee. Since the April 1, 2020 estimates base of 27,844, the population has grown by 674 (+2.4%), compared with +5.8% for Tennessee as a whole.
With 520 square miles of land, that is 55 people per square mile (21 per km²), placing Henderson County #1,464 nationally for density and #65 in Tennessee. The median county equivalent has 47 people per square mile; the Tennessee median is 76. Put another way, there are about 12 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 27,833 | 27,918 | 27,912 | 28,083 | 28,229 | 28,518 |
| Change | — | +85 | −6 | +171 | +146 | +289 |
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 Henderson County
4 incorporated places lie at least partly in Henderson County. Together they are home to 9,396 people (32.9%); the other 19,122 (67.1%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Lexington city, with 8,130 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Lexington cityCounty seat | 8,130 | +2.4% | 11.8 |
| Scotts Hill townAlso in 1 other county | 562 | +1.1% | 3.666 |
| Sardis town | 417 | +2.7% | 2.5 |
| Parker's Crossroads city | 287 | +1.1% | 3.786 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Henderson County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Henderson County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
14 ZIP Code Tabulation Areas have land in Henderson County; 6 of them have most of their land inside the county, and the others mainly cover neighboring areas.
3831338321383283832938345383513835238363383683837038371383743838838390
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 Henderson County
Henderson County shares a land border with 5 county equivalents. It has more land than 2 of them. The largest neighbor is Carroll County (597.7 mi²) and the smallest is Chester County (285.7 mi²). Together with its neighbors, Henderson County forms a block of 2,871.9 mi² of land, of which it holds 18.1%.
| Bordering county equivalent | Land mi² | Size vs. Henderson | Compare |
|---|---|---|---|
| Carroll County | 597.7 | 1.1× larger | Compare |
| Hardin County | 577.5 | 1.1× larger | Compare |
| Madison County | 557.2 | 1.1× larger | Compare |
| Decatur County | 333.9 | 1.6× smaller | Compare |
| Chester County | 285.7 | 1.8× smaller | Compare |
How big is Henderson County compared with U.S. states?
Henderson County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2 times as much. Tennessee’s county land could hold about 79 areas the size of Henderson County.
Another way to picture it: the same land area would fill a square about 22.8 miles (36.7 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 Henderson County?
Henderson County has more land than 1,217 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 Henderson County at #2,088 nationally by total area, 83 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 1.1%, compared with a national county-equivalent median of 1.2%. The two percentages are within 0.1 percentage points of each other. 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 Henderson County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2004 | Marin County, California | 520.1 | Compare |
| #2005 | Henderson County, Tennessee | 520 | This county |
| #2006 | Jefferson County, Mississippi | 519.9 | Compare |
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.
Representative coordinates
The Census internal point is 35.653994, -88.387674. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 1,346,816,742 m²; AWATER: 15,219,341 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Henderson County?
Henderson County, Tennessee has 520 square miles (1,346.8 km²) of land and 5.876 square miles of water, for a total area of 525.9 square miles. It ranks #2005 of 3,222 U.S. county equivalents by land area.
Is Henderson County the largest county in Tennessee?
No. Henderson County ranks #34 of 95 in Tennessee by land area. The largest is Shelby County, with 752.8 square miles of land.
What counties border Henderson County?
Henderson County shares a land border with Decatur County, Carroll County, Chester County, Madison County, and Hardin County.
What is the population of Henderson County?
The Census Bureau estimates Henderson County had 28,518 residents on July 1, 2025, ranking #1,535 of 3,222 county equivalents. That is 55 people per square mile of land.
What is the county seat of Henderson County?
The county seat of Henderson County is Lexington.
What cities and towns are in Henderson County?
Henderson County has 4 incorporated places. The most populous are Lexington city, Scotts Hill town, Sardis town, and Parker's Crossroads city; 19,122 residents live outside any incorporated place.
Is Henderson County part of a metropolitan area?
No. Henderson County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Henderson County?
14 ZIP Code Tabulation Areas have land in Henderson County, and 6 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Henderson County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2 times as much land.
How many acres of land are in Henderson County?
The land measurement converts to approximately 332,806 acres. Including water, total area is approximately 336,566 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.