The Madison County Alabama map is most informative when the county is divided into a Huntsville urban core, the Madison–Research Park west side, Redstone Arsenal in the southwest, fast-growing northern communities such as Harvest and Hazel Green, mountain-influenced eastern communities such as Gurley and Owens Cross Roads, and the Tennessee River edge in the south. Roads and terrain explain these differences better than a simple list of place names.
Table of Contents
Download the Madison County map
The JPG separates the Huntsville–Madison urban area, Redstone Arsenal, the northern communities, the eastern mountain side, and the Tennessee River corridor.
- Map file: Madison County map
- File format: JPG
- Coverage: County boundary and selected labeled places
Quick Facts
| State | Alabama |
|---|---|
| County | Madison County |
| County seat | Huntsville |
| 2025 population estimate | 433,516 |
| 2020 census population | 388,153 |
| 2020 land area | 801.60 sq mi |
| 2020 population density | 484.2 per sq mi |
| Main routes | I-565, U.S. 72, U.S. 231/431, AL 53, AL 255 |
| Major waters | Tennessee River/Wheeler Reservoir, Flint River, Paint Rock River system |
| Terrain | Tennessee Valley, Monte Sano and Green Mountain, western edge of the Cumberland Plateau |
The U.S. Census Bureau estimates 433,516 residents as of July 1, 2025, 11.7 percent above the 2020 estimates base of 388,158. The 2020 census counted 388,153 residents. That increase reflects sustained expansion across Huntsville, Madison, the northern suburbs, and major employment corridors.
Madison County contains 801.60 square miles of land and had a 2020 density of 484.2 people per square mile. The average masks a sharp pattern: the Huntsville–Madison core is heavily urbanized, while the Tennessee-border north and the ridge-and-valley east remain more dispersed.
What the Map Shows
Huntsville is the county seat and dominant urban center. Downtown government functions, Redstone Arsenal, NASA’s Marshall Space Flight Center, Cummings Research Park, and the University of Alabama in Huntsville form a concentrated government, defense, research, and education economy on the central and western side.
Madison sits immediately west of Huntsville and is a major suburban center in its own right. U.S. 72 and I-565 connect it with Research Park, Huntsville, and Limestone County, while county district boundaries also place Madison, Research Park, and Triana in one continuous western urban corridor.
Redstone Arsenal is not an ordinary municipality. It is a large U.S. Army installation occupying much of southwestern Huntsville, and NASA’s Marshall Space Flight Center is physically located inside the Arsenal. Recognizing that land block is essential to understanding why road access and development take unusual shapes on the southwest side.
Harvest, Hazel Green, and Meridianville represent the broad northern growth belt. The Tennessee Valley is relatively flat here, so subdivisions and commuter development can spread along north-south arterials with fewer mountain barriers than on the eastern side.
New Market and Moores Mill orient the northeast. They sit between the flatter Hazel Green–Meridianville area and the more rugged terrain toward Jackson County, making them useful transition points between suburban expansion and rural valley settlement.
Gurley, New Hope, and Owens Cross Roads define the east and southeast. Madison County’s own District 3 groups these communities together, and the Monte Sano–Green Mountain ridges channel roads and development into narrower valleys and passes.
Triana lies near the Tennessee River southwest of Madison. It marks the connection between the western suburban corridor, Redstone Arsenal’s southern edge, and the Wheeler Reservoir landscape.
The 12 map labels are Gurley, Harvest, Hazel Green, Huntsville, Madison, Meridianville, Moores Mill, New Hope, New Market, Owens Cross Roads, Redstone Arsenal, and Triana. Reading them as urban core, northern growth belt, eastern mountain communities, and southern river edge gives them a clearer geographic role.
County Layout and Location
Madison County reaches from the Tennessee state line south to the Tennessee River. Limestone County is to the west, Jackson County to the east, and Morgan and Marshall counties lie across or beyond the southern river-and-mountain edge. Most of the central and northern county occupies the Tennessee Valley, while ridges rise sharply in the east and southeast.
I-565 is the principal east-west freeway for the Huntsville–Madison urban area. It links the I-65/Limestone County side with Huntsville, Redstone Arsenal access, the airport corridor, and the central city.
U.S. 72 forms a second east-west spine farther north. It passes through Huntsville’s commercial and residential belt, connects west toward Madison and Athens, and continues east toward Gurley and Scottsboro.
U.S. 231/431 is the main north-south route through Huntsville. The Memorial Parkway corridor ties Meridianville and the Tennessee direction to downtown Huntsville and the Tennessee River/Morgan County side.
Alabama 53 carries traffic northwest through Harvest and Toney toward Tennessee, while Alabama 255/Research Park Boulevard ties Redstone Arsenal and Research Park to northwestern Huntsville. Northern growth therefore follows several parallel arterial corridors rather than one single suburban axis.
ALDOT lists a March 2019 countywide functional-classification map for Madison County and an April 2025 Huntsville MPO map. The newer MPO resource is the better guide to the current urban road hierarchy, while the county sheet remains useful for the outer rural network.
The Tennessee River widens into Wheeler Reservoir along the southern edge. TVA identifies Madison as one of the north Alabama counties touched by the reservoir, making the river a major physical boundary for Redstone Arsenal, Triana, and southern Huntsville.
Local Context
Madison County was created in 1808 by the governor of Mississippi Territory and named for James Madison. Huntsville developed around Hunt’s Spring and became the county seat; by 1811 the territorial legislature had restored the Huntsville name after an unsuccessful attempt to rename the settlement Twickenham.
The county’s early regional importance came from land sales, the Tennessee River, and railroad transportation. Madison County history records the 1855 completion of the Memphis and Charleston Railroad and describes the navigable Tennessee River as part of the wider southern transportation system.
A dramatic economic change began in 1941 when the Huntsville Arsenal and Redstone Ordnance Plant were built southwest of the city. After World War II, Redstone became the Army’s center for rocket and missile development, redirecting Huntsville from a textile and agricultural city toward engineering and federal research.
NASA’s Marshall Space Flight Center was founded in 1960 and is located on Redstone Arsenal. NASA currently describes Marshall as a field center with more than 6,000 people and major responsibilities for the Space Launch System, human landing systems, and space-station science operations.
Cummings Research Park provides the private-sector and academic counterpart to Redstone. The park reports 3,843 acres, more than 300 companies, and about 26,000 employees, helping explain the dense office, technology, university, retail, and residential development between U.S. 72 and I-565.
Monte Sano creates one of the county’s strongest physical contrasts. Monte Sano State Park covers 2,140 acres and contains 20 miles of hiking trails and 14 miles of biking trails, but its broader geographic importance is the steep ridge immediately east of central Huntsville.
Monte Sano and Green Mountain funnel east-southeast travel through a limited number of crossings. That is why Owens Cross Roads and the Hampton Cove side can be close to downtown in straight-line distance while their road pattern looks very different from the flat Madison and Research Park side.
The northern county presents the opposite terrain. Hazel Green, Harvest, Meridianville, and surrounding communities occupy a broad Tennessee Valley plain with long arterial roads and comparatively few topographic barriers, allowing suburban growth to spread across a much wider area.
Ways to Use This Map
Start with Huntsville and trace I-565 east-west and U.S. 231/431 north-south. Then place Madison, Research Park, and Redstone Arsenal to the west and southwest. Those relationships establish the modern employment and transportation core.
Next group Harvest, Hazel Green, Meridianville, and New Market as the northern valley growth belt. Contrast that pattern with Gurley, New Hope, and Owens Cross Roads, where ridges and valleys exert much more control over roads and development.
Finally overlay the Tennessee River/Wheeler Reservoir with Monte Sano and Green Mountain. The southern water boundary and eastern ridges explain why Triana, Redstone Arsenal, south Huntsville, and the southeast communities connect through specific corridors rather than a uniform street grid.
- Use Huntsville, I-565, and U.S. 231/431 as the central government and transportation frame.
- Connect Madison, Cummings Research Park, and Redstone Arsenal as the western and southwestern employment belt.
- Group Harvest, Hazel Green, Meridianville, and New Market as the Tennessee-border growth area.
- Read Gurley, New Hope, and Owens Cross Roads through the Monte Sano–Green Mountain terrain.
- Use Triana and the Tennessee River/Wheeler Reservoir as the southern geographic boundary.
Frequently Asked Questions
Are Redstone Arsenal and NASA’s Marshall Space Flight Center the same place?
They are separate organizations but their locations overlap. Redstone Arsenal is a large U.S. Army installation, and NASA’s Marshall Space Flight Center is located within the Arsenal in Huntsville. On a county map, Redstone is the broad federal land area and Marshall is one of its major research institutions.
Why does growth look different in Hazel Green and Owens Cross Roads?
Hazel Green sits on the flatter Tennessee Valley plain, where roads and subdivisions can spread broadly along U.S. 231/431 and Alabama 53. Owens Cross Roads is influenced by Monte Sano, Green Mountain, and adjacent ridges, which concentrate travel and development into narrower corridors.
Related Alabama County Maps
- Marengo County Map | Demopolis, Linden, and 10 Places
- Marion County Map | Hamilton, Winfield, and 10 Places
- Marshall County Map | Guntersville, Albertville, and 10 Places
- Mobile County Map | Port, Coast, and 21 Places
Sources
- U.S. Census Bureau QuickFacts
- Madison County official history
- Madison County northern and northeastern communities
- Madison County southern and eastern communities
- ALDOT Highway Functional Classification Maps
- NASA Marshall Space Flight Center
- Cummings Research Park
- Monte Sano State Park
- TVA Wheeler Reservoir
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These maps are edited visual materials, not raw data files, and are provided for education, documents, presentations, and graphic reference.
