Mineral rights in Starr County, Texas
Starr County sees steady, selective drilling — 19 permits over the last 24 months, cooling versus the prior period.
- 19
- Permits · 24 mo
- 11,774
- Wells on record
- 665
- Mineral owners
- 215.8K
- Oil 2025 (bbl)
down 10% vs prior 24 months
appraisal-linked records
RRC county cycle data
Who's drilling Starr County
Operators ranked by drilling permits approved in the 24 months ending 2026-05-23.
| Operator | Permits · 24 mo |
|---|---|
| Killam Oil | 7 |
| Triad O&G, LLC | 3 |
| Mueller Exploration | 2 |
| Osborn, W.B. Oil & Gas Operations | 1 |
| Petrovybe Opco LLC | 1 |
What the record says
Starr County recorded 19 drilling permits in the 24 months ending 2026-05-23, against 21 in the prior 24 months. Activity centers on the Western Gulf basin.
On the production side, Texas Railroad Commission county cycle data shows Starr County produced roughly 215.8K barrels of oil and 18M Mcf of gas in 2025 — the royalty base that mineral values here are priced against.
Ownership is spread across 665 mineral owners holding 665 appraisal-linked interest records . Fragmented ownership like this is where buyers find deals — and where heirs discover interests they didn't know they had. See our guide to researching mineral ownership.
Thinking about value? Start with what drives mineral prices or run the numbers in the value calculator.
Starr County mineral rights FAQ
Who is drilling in Starr County, Texas?
The most active operators by permits approved in the last 24 months are Killam Oil, Triad O&G, LLC, Mueller Exploration. The full table above lists the top five with permit counts.
How many mineral owners are there in Starr County?
County appraisal and ownership records show 665 distinct mineral owners holding 665 interest records in Starr County as of the 2026-05-23 snapshot.
How do I research mineral rights ownership in Starr County?
Start with the Starr County clerk's deed records and the county appraisal roll, then verify against state regulator filings. Our title search guide walks through the process, and the Mineral Eagle platform links these records for the whole county.
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Buying in Starr County?
Mineral Eagle links every permit above to the owners it affects — 665 of them, with the records to back it up.