The Limestone County Alabama map is best read as a rapidly changing Tennessee Valley county with Athens at the center, I-65 and U.S. 72 forming the main crossroads, Elkmont and Ardmore marking the Tennessee border, Huntsville and Madison expanding into the east, and the Tennessee River–Wheeler Reservoir defining the south. Recent industrial and residential growth has made the eastern county far more urban than older descriptions suggest.
Table of Contents
Download the Limestone County map
The JPG separates the Athens core, I-65/U.S. 72 crossroads, Tennessee-border communities, eastern Huntsville growth area, and the southern Wheeler Reservoir landscape.
- Map file: Limestone County map
- File format: JPG
- Coverage: County boundary and selected labeled places
Quick Facts
| State | Alabama |
|---|---|
| County | Limestone County |
| County seat | Athens |
| 2025 population estimate | 122,928 |
| 2020 census population | 103,570 |
| 2020 land area | 559.96 sq mi |
| 2020 population density | 185.0 per sq mi |
| Main routes | I-65, I-565, U.S. 31, U.S. 72, AL 20, AL 99, AL 127, AL 251 |
| Major waters | Tennessee River, Wheeler Reservoir, Elk River, Limestone Creek |
| Major growth areas | Athens/I-65, Huntsville-annexed east, I-565 industrial corridor |
The U.S. Census Bureau estimates 122,928 residents as of July 1, 2025, 18.7 percent above the 2020 estimates base of 103,563. The 2020 census counted 103,570 residents. That rate is exceptionally strong for north Alabama and reflects simultaneous growth around Athens, Huntsville-annexed land, and the I-565 employment corridor.
Limestone County contains 559.96 square miles of land and had a 2020 density of 185.0 people per square mile. The figure hides a major internal contrast: eastern and central corridors are urbanizing quickly while much of the northwest remains farmland, small towns, and creek-valley countryside.
What the Map Shows
Athens is the county seat and the strongest geographic anchor. U.S. 72 crosses east-west while I-65 passes just east of town, putting Athens at the intersection of the Nashville–Birmingham and Huntsville–Florence travel directions.
Elkmont represents the northern rural corridor near Tennessee. The former railroad through town has been converted into the Richard Martin Rails to Trails route, which continues north to the state line and preserves the same linear travel geography in a different form.
Ardmore marks the northeastern Tennessee-border edge. It serves as a cross-state reference point for the U.S. 31/I-65 side and helps separate northern Limestone County from the more urban Huntsville-facing east.
Mooresville is a tiny historic town in the southeast. Limestone County’s official history identifies it as incorporated on November 16, 1818, making it the oldest town in the county. Its rural historic fabric now sits very close to modern Huntsville–Madison growth.
Huntsville is primarily a Madison County city, but large parts of its corporate limits extend into Limestone County. The City’s 2025 Limestone County master plan covers roughly 45,000 acres of city and unincorporated land and treats the area as a major long-term employment and housing corridor.
Madison also extends into Limestone County; the city’s official property locator explicitly lists Limestone County properties inside Madison city limits. Together, Huntsville and Madison explain why the eastern county is developing much faster than its older agricultural identity would imply.
Decatur is mostly south of the Tennessee River in Morgan County, but it remains a useful external anchor for I-565, Alabama 20, and Wheeler Reservoir. The eight map labels—Ardmore, Athens, Decatur, Elkmont, Huntsville, Lester, Madison, and Mooresville—work best when grouped into central, border, eastern-growth, and southern-river zones.
County Layout and Location
Limestone County stretches from the Tennessee state line south to the Tennessee River. Lauderdale County lies to the west, Madison County to the east, and Lawrence and Morgan counties to the south. County history also identifies the Elk River in the west and the Tennessee River in the south as defining physical features.
I-65 is the county’s principal north-south spine. It carries regional traffic toward Nashville and Birmingham and concentrates commercial, industrial, and residential development around its interchanges.
U.S. 72 crosses Athens and connects east toward Madison and Huntsville and west toward Florence. The I-65/U.S. 72 interchange is therefore the county’s clearest regional crossroads.
I-565 enters the southeastern county and links the I-65 corridor directly with Huntsville. The land around the I-65/I-565 junction has become one of the most important industrial and residential development zones in north Alabama.
Alabama 127 and 99 connect Athens with Elkmont and the northwest, while Alabama 20 serves the Tennessee River and Decatur-facing south. Major highways establish the growth corridors, and state and county roads feed the rural communities into those corridors.
ALDOT lists a September 2016 functional-classification map for Limestone County. Because the eastern edge has changed rapidly since then, the countywide sheet is best paired with newer Huntsville planning information when interpreting today’s developed area.
Local Context
Limestone County was created on February 6, 1818, by the Alabama Territorial General Assembly. It was named for Limestone Creek and its hard limestone bed, and Athens became the county seat in 1819 after being incorporated the previous year.
The Tennessee Valley’s fertile soils made agriculture central to early settlement and county growth. County history still identifies Limestone as one of Alabama’s significant cotton-producing counties, even as metropolitan development consumes more farmland in the east.
Railroads changed the middle and northern county in the nineteenth century. The old route through Elkmont survives in a new form as the 10.2-mile Richard Martin Rails to Trails path from Piney Chapel through Elkmont toward Veto at the Tennessee line.
The Elk River is the principal western river corridor. Limestone County’s canoe trail begins near Elkmont and extends 21.9 river miles, illustrating how the river ties the Tennessee-border north to the Tennessee River system farther south.
Wheeler Reservoir dominates the southern edge. TVA lists 67,070 acres of water surface and 1,027 miles of shoreline, making the reservoir a major navigation, industrial, ecological, and recreation feature across the Tennessee Valley.
County history records that about 50,000 acres in Limestone County were taken for the creation of Wheeler Lake and related works. That transformation altered farms, roads, and settlement while bringing TVA electricity and a new economic relationship with the river.
The modern east side is being reshaped by Huntsville. Its 2025 Limestone County master plan covers roughly 45,000 acres and forecasts about 2,200 new housing units and 2,400 new jobs annually over a long-term planning horizon.
Industrial development in Huntsville-annexed Limestone County includes Mazda Toyota Manufacturing, Polaris, and Amazon. In January 2026, Huntsville approved a 648.44-acre annexation south of I-565 that includes land for the first Huntsville City Schools campus in Limestone County, reinforcing the shift from employment-only growth toward full suburban communities.
Ways to Use This Map
Start with Athens, then trace I-65 north-south and U.S. 72 east-west. Those two routes establish the county’s central frame before adding the Tennessee-border communities, Huntsville-facing east, and Tennessee River south.
Treat I-565 and Huntsville-annexed land as a separate growth zone. Older county maps may make this area look rural, but current land use includes major manufacturing, logistics, and large planned residential developments.
Finally, compare the Elk River with Wheeler Reservoir. The northwest is a rural border-and-river landscape, while the south is a broad Tennessee River reservoir corridor tied to Decatur, navigation, industry, and TVA infrastructure.
- Use Athens, I-65, and U.S. 72 as the central government and transportation framework.
- Group Elkmont and Ardmore as the Tennessee-border rural corridor.
- Read Huntsville, Madison, and I-565 as the eastern industrial and residential growth zone.
- Use Mooresville to mark the meeting point of early settlement and modern suburban expansion.
- Trace the Elk River and Wheeler Reservoir to distinguish the western and southern water landscapes.
Frequently Asked Questions
Why are Huntsville and Madison labeled on a Limestone County map?
Both cities have corporate limits extending into Limestone County. Huntsville in particular controls a large annexed growth area around I-565 and I-65, so the eastern county is directly tied to Huntsville’s industrial, housing, school, and infrastructure planning.
Why is Limestone County growing so quickly?
The growth combines Athens expansion, access to I-65 and I-565, Huntsville’s westward annexation, major manufacturing and logistics employers, and large new housing projects. The 2025 Census estimate is 18.7 percent above the 2020 estimates base, so the change is already visible in countywide population data.
Related Alabama County Maps
- Lowndes County Map
- Macon County Map | Tuskegee, I-85, and Four Places
- Madison County Map | Huntsville, Redstone Arsenal, and 12 Places
- Marengo County Map | Demopolis, Linden, and 10 Places
Sources
- U.S. Census Bureau QuickFacts
- Limestone County official history
- City of Athens history
- ALDOT Highway Functional Classification Maps
- City of Huntsville Limestone County growth plan
- City of Huntsville 2026 Limestone County annexation
- TVA Wheeler Reservoir
- Limestone County Richard Martin Rails to Trails
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