Sell Your Mineral Rights in St. Mary Parish, LA
If you own mineral rights in St. Mary Parish, you're sitting on acreage in one of Louisiana's historically productive Gulf Coast corridors — a region that has been generating both oil and gas for decades. Whether you just got an offer in the mail or inherited these rights years ago and never really looked into them, it's worth understanding what you actually have before you make any decisions.
Est. per Acre
$200–$1,800
per net royalty acre
Core Basin
Gulf Coast
Primary Formation
Primary Resource
Oil & Gas
Commodity Type
What's Going On With Mineral Rights in St. Mary Parish Right Now
St. Mary Parish sits in the Gulf Coast Basin, a mature but still-active producing region in south-central Louisiana, anchored by the parish seat of Franklin. This isn't a brand-new shale play with rigs popping up overnight — it's a long-established producing area where oil and gas have been pulled from the ground for generations, and where operators continue to work existing fields and pursue new development in deeper horizons. Activity levels here are moderate compared to hotter plays like the Haynesville or Eagle Ford, so if you've received an unsolicited offer, it's worth taking your time rather than assuming you need to act immediately. Rights in established Gulf Coast parishes like this one can carry real value, but that value depends heavily on where your acreage sits, what's beneath it, and whether any operator has already leased or developed nearby.
St. Mary Parish Mineral Rights — By the Numbers
$200 – $1,800
estimate, varies by location and activity
Estimated Value Range Per Acre
Gulf Coast Basin
Primary Basin
Oil and Gas
both produced in the parish
Primary Commodities
49,114
residents
Parish Population
Franklin
St. Mary Parish, LA
Parish Seat
Who's Operating in St. Mary Parish
Active Gulf Coast operators work this parish — specific names vary by tract and year. We can identify who holds leases near your acreage.
What's in the Ground
Frio Formation
A prolific Gulf Coast producing zone found across south Louisiana. The Frio has been a reliable oil and gas producer in this region for decades and remains a target for operators working established fields.
Wilcox Sands
Deeper Wilcox sands have historically produced both oil and gas across the Gulf Coast trend. Where present in St. Mary Parish, they represent a meaningful component of subsurface value.
Oligocene Sands
Shallow to mid-depth Oligocene sands are common producing intervals across south-central Louisiana. These sands contribute to the multi-zone character that makes Gulf Coast acreage potentially valuable at several horizons.
What to Know About St. Mary Parish
Louisiana Uses the Napoleonic Code as Its Legal Foundation
Louisiana's property and mineral law is rooted in civil law tradition, not common law like the rest of the U.S. This matters: mineral rights in Louisiana operate under the Louisiana Mineral Code, which has specific rules around prescription (the equivalent of expiration) and servitudes. If your rights have been dormant for 10 years without a producing well or a signed lease, they may have prescribed back to the surface owner. This is one of the most important things Louisiana mineral owners need to understand — and a good reason to verify the status of your rights before assuming they're active.
Mineral Servitudes Can Prescribe
Unlike most states where severed mineral rights last indefinitely, Louisiana mineral servitudes expire after 10 years of non-use unless interrupted by production, a new lease, or other qualifying activity. If you inherited rights and haven't checked on them in years, it's worth confirming they haven't prescribed.
St. Mary Parish Is Coastal, Which Adds Complexity
Parts of St. Mary Parish border the Atchafalaya Basin and coastal wetlands. Mineral development in or near these areas can involve additional state and federal permitting layers. This doesn't eliminate value, but it's a real factor in how and whether certain tracts get developed.
Royalty Rates Are Negotiable
Standard lease royalties in Louisiana are often 1/5 (20%), but many landowners accept 1/6 or less without realizing they had room to negotiate. If an operator approaches you about leasing your rights, the royalty rate — and the bonus payment — are both on the table.
Questions We Hear From St. Mary Parish Owners
I inherited mineral rights in St. Mary Parish but haven't heard from any operator in years. Are they still worth something?
An operator sent me a lease offer. Should I just sign it?
What makes St. Mary Parish different from other Gulf Coast parishes when it comes to mineral rights value?
Find Out What Your St. Mary Parish Mineral Rights Are Worth
You don't need to figure this out alone. Whether you've just gotten an offer, inherited rights you've never looked into, or are simply curious what your acreage might be worth today — we'll give you a straightforward, no-pressure answer. The first conversation is free, and we'll tell you what we actually think, not just what you want to hear.
Get My Free ValuationData Sources
Production and operator figures for St. Mary Parish are drawn from U.S. Census Bureau (ACS 5-Year), and Wikipedia. Per-acre values are estimates and not an offer.
Other Gulf Coast Counties
St. Mary Parish is part of the Gulf Coast. See the full basin overview, operators, and counties we serve.
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