Texas county · RRC district 01
Zavala County
Zavala County reported 6.3 million barrels of oil and 11 million mcf of gas in the 12 months through Jul 2026. That ranks 35th of 224 Texas counties by oil.
County dossier · #35 of 224 for oil
- Producing leases
- 321of 455 on record
- Operators
- 36
- Fields
- 37
- Top operator
- Exco Operating Company, LP
Own minerals in Zavala County?
Upload a royalty check stub or a phone photo. We compare each month with the Jul 2026 state numbers for the leases below.
Where it sits
This county
- Gas, last 12 months
- 11,142,607 mcf
- Share of Texas oil
- 0.3%
- Leases on record
- 455
- Data through
- Jul 2026
Production
Five years of output in Zavala County
Oil output in Zavala County fell 29% over the last 12 months
6.3M bbl in the 12 months through Jul 2026, against 9M bbl in the 12 months before. Peak month: Aug 2024, 896k bbl.
Gas output in Zavala County fell 22% over the last 12 months
11M mcf in the 12 months through Jul 2026, against 14M mcf in the 12 months before. Peak month: Oct 2024, 1.4M mcf.
SourceTexas Railroad Commission, Production Data Query, county totals of every lease. Reported through Jul 2026, file dated Sep 18, 2026. The newest month is often revised as operators file late.
Leases
The biggest leases in Zavala County
632,421bbl oil−19% on the year before
498,519bbl oil−48% on the year before
349,734bbl oil−21% on the year before
226,690bbl oil−31% on the year before
225,115bbl oil−30% on the year before
218,455bbl oilno full prior year
209,259bbl oil−27% on the year before
142,683bbl oil−23% on the year before
141,789bbl oil−15% on the year before
118,385bbl oil−32% on the year before
89,412bbl oil−11% on the year before
79,928bbl oil−53% on the year before
77,400bbl oil−26% on the year before
69,459bbl oil−11% on the year before
67,614bbl oil−13% on the year before
67,506bbl oil−27% on the year before
63,828bbl oil−57% on the year before
63,390bbl oil−35% on the year before
61,679bbl oil−50% on the year before
60,292bbl oil−44% on the year before
58,404bbl oil−52% on the year before
56,414bbl oilno full prior year
53,684bbl oil−39% on the year before
51,153bbl oil−18% on the year before
48,567bbl oil−1% on the year before
Showing 25 of 150 (the 150 largest of 321 producing leases).
SourceTexas Railroad Commission, Production Data Query. Ranked by an approximate value of last-12-month output, so oil and gas wells sort together.
In Zavala County
Who runs the leases, and what they produce
Operators in Zavala County, by oil
Exco Operating Company leads
- Exco Operating Company, LP95 producing leases here3.4Mbbl
- Buffco Production Inc.14 producing leases here945kbbl
- Trinity Operating (Usg), LLC38 producing leases here718kbbl
- CML Exploration, LLC52 producing leases here476kbbl
- Magnolia Oil & Gas Operating LLC10 producing leases here259kbbl
- U.S. Energy Development Corp9 producing leases here225kbbl
- Formentera Operations LLC6 producing leases here61.5kbbl
- Etoco, L.P.1 producing lease here53.7kbbl
Fields in Zavala County, by oil
Briscoe Ranch (Eagleford) leads
- Briscoe Ranch (Eagleford)184 producing leases here · District 01 · Field 120182005.8Mbbl
- Pearsall (Austin Chalk)28 producing leases here · District 01 · Field 69981125386kbbl
- Pearsall (Buda, S.)27 producing leases here · District 01 · Field 6998137576.9kbbl
- Pena Creek (Georgetown)14 producing leases here · District 01 · Field 7041121074.3kbbl
- Spinach (Elaine)1 producing lease here · District 01 · Field 8518830016.4kbbl
- Elaine, W. (San Miguel)2 producing leases here · District 01 · Field 282305003,993bbl
- Independence, West (Olmos)1 producing lease here · District 01 · Field 443663002,985bbl
- Jetero (San Miguel)1 producing lease here · District 01 · Field 463152002,954bbl
More operators here
Recent drilling permits in Zavala County
No drilling permits in Zavala County are in our data yet.
For owners
Minerals in Zavala County, in plain terms
- Rank by oil
- 35 of 224
- Share of Texas oil
- 0.3%
- Producing leases
- 321
- Operators
- 36
If you inherited mineral rights in Zavala County, the money comes from an operator: the company that drills and runs the wells. Here, the largest is Exco Operating Company, LP, among 36 operators with producing leases.
Each lease has a name, a Railroad Commission district and a lease number. Your check stub prints them, or a version of them. Search the name on your stub, open the lease, and compare the “oil sold” and “gas sold” volumes for the month with the barrels and mcf on your stub.
We hold 455 leases in Zavala County, of which 321 reported production recently. The state publishes county totals two to three months late, so Jul 2026 is the newest month.