Buying Land in DeSoto County, Mississippi

Mississippi's fastest-growing county, driven by Memphis

DeSoto County sits directly across the state line south of Memphis, Tennessee, and that geography drives its entire land-market story. DeSoto has consistently ranked as Mississippi's fastest-growing county, and one national analysis placed it 36th among all US counties for growth rate -- the only Mississippi county to crack that top-100 list -- with a reported population gain of roughly 30,599 people, or about 19.8%, between the 2010 and 2020 Census. That growth is concentrated in and around the county's incorporated cities (Southaven, Olive Branch, Horn Lake, and Hernando) as Memphis-area commuters and employers push south across the state line, but it also puts real, ongoing development pressure on unincorporated land throughout the county.

For a land buyer, this cuts two ways. On one hand, DeSoto offers genuine appreciation potential and infrastructure (roads, utilities, schools) that many rural Mississippi counties simply don't have. On the other, it means land here is priced and regulated more like an exurban growth market than a traditional rural county -- rezoning activity, subdivision approvals, and development-standard compliance are all live, current issues rather than theoretical ones, and buyers should expect a more active, better-staffed planning bureaucracy than in the state's more sparsely populated counties.

A real countywide zoning ordinance -- and five more on top of it

Unlike the many rural Mississippi counties that have never adopted zoning under the state's optional Title 17, Chapter 1 framework, DeSoto County maintains a genuine, detailed, and actively updated Zoning Ordinance (with a version current as of March 2024) plus a separate Design Standard Ordinance governing development standards, both administered by the county's own Planning & Building department under an active Planning Commission. That makes DeSoto, alongside Hinds and Lamar counties, a documented example of a Mississippi county that has fully built out its zoning authority rather than leaving unincorporated land unregulated -- and it means the zoning district assigned to a specific parcel genuinely controls what can be built there, not just what a subdivision covenant happens to say.

Layered on top of the county's own ordinance, each of DeSoto's five incorporated places -- Hernando (the county seat), Horn Lake, Olive Branch, Southaven, and the Town of Walls -- separately adopts and enforces its own zoning ordinance, subdivision regulations, and building, plumbing, gas, electrical, and fire codes within its own limits. That means the very first question for any DeSoto County parcel is jurisdictional: is this land inside one of these five cities, or in the unincorporated county under the county's own Zoning Ordinance and 2030 Comprehensive Plan? Get that answer, and the specific zoning district and its permitted-use table, in writing from the relevant planning office before you assume a parcel can support your intended use.

The county's biggest current zoning story: data centers

As of 2026, DeSoto County's zoning system is actively working through the state's biggest current land-use flashpoint: hyperscale data centers tied to the AI buildout spilling south from Memphis. Elon Musk's xAI has built a large gas-turbine power plant in Southaven to run its Colossus 2 data center, and that project is now the subject of active Clean Air Act litigation brought by the NAACP alongside the Southern Environmental Law Center and Earthjustice. Separately, Olive Branch has fought over a roughly 600-acre industrial rezoning -- the 'DeSoto Innovation District' -- that originally included a data center, and the city has since been drafting a new ordinance to specifically restrict where and how data centers can be sited. Both situations are detailed, with current sourcing, on this site's dedicated DeSoto County zoning page, since they involve more specific, fast-moving facts than this hub can track in real time.

Septic and water still run through the statewide system

Even with DeSoto's unusually developed zoning apparatus, septic permitting still follows Mississippi's statewide model: MSDH's Title 41, Chapter 67 standard, with actual site evaluation and permit issuance handled by the DeSoto County Health Department. Given the pace of development here, expect closer scrutiny of soil conditions and lot sizing than in a slower-growth rural county, and get any existing system's approval and inspection record directly from the health department rather than relying on age or a seller's description.

Water use follows the same MDEQ framework as the rest of the state -- a typical household well stays well under the 20,000-gallon-per-day annual-reporting threshold, but given DeSoto's development pace, any parcel tied to a subdivision's shared water system, an irrigation use, or a commercial well should have its MDEQ permit status confirmed directly, since a permit doesn't automatically transfer to a new owner's different plans.