THE SIMPSON COUNTY LAND BRIEF
Land in the
Southern Hilly Gulf Coastal Plain setting.
Simpson County has 589.2 square miles of land in Mississippi. 3 mapped landscape regions meet across Simpson County: Southern Hilly Gulf Coastal Plain, Southern Rolling Plains, Southeastern Floodplains and Low Terraces.
Irregular plains of sand, silt and clay support a mix of pine and hardwood landscapes. The region has more relief than the lower coastal plain, with generally gentle stream gradients.
Regional context: Southeastern Plains ↗ · Regional mapping across the county footprint
Where the landscape changes
Simpson County intersects 3 mapped regional units. The largest mapped shares are:
- Southern Hilly Gulf Coastal Plain92.8%
- Southern Rolling Plains5.2%
- Southeastern Floodplains and Low Terraces2%
Mississippi Valley Loess Plains in Simpson County
Windblown loess blankets irregular plains and rolling hills, with steeper bluffs near the Mississippi River. Flatter eastern areas contrast with the more deeply cut bluff country.
Read the regional source ↗Finding your parcel within Simpson County
The atlas lists 4 cities, towns, townships, and Census communities associated with Simpson County, including Mendenhall, Magee, D'Lo. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Simpson County by land and water
The Census records 1.3 square miles of water within Simpson County, or 0.2% of its total area. That share is close to Simpson County’s 0.2%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Simpson County has 110.2 times the land area of nearby Mendenhall city (5.35 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Copiah County, Covington County, Hinds County, Jefferson Davis County, Lawrence County, Rankin County, Smith County within Mississippi. A tract near one of these lines should be matched to the county identifier on its own records.

