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Texas county · RRC district 04

Duval County

Duval County reported 439,604 barrels of oil and 3.5 million mcf of gas in the 12 months through Jul 2026. That ranks 100th of 224 Texas counties by oil.

County dossier · #100 of 224 for oil

439,604bbl oil, last 12 months−10% vs prior year
Producing leases
346of 976 on record
Operators
57
Fields
149

Own minerals in Duval 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

Duval CountyDuvalJim WellsDuval County
Duval County · RRC district 04
Gas, last 12 months
3,534,090 mcf
Share of Texas oil
<0.1%
Leases on record
976
Data through
Jul 2026

Production

Five years of output in Duval County

Monthly totals for every lease the Railroad Commission places in this county. Oil is in barrels (bbl), gas in thousand cubic feet (mcf).

Oil output in Duval County fell 10% over the last 12 months

440k bbl in the 12 months through Jul 2026, against 490k bbl in the 12 months before. Peak month: Dec 2021, 62.6k bbl.

Oil output in Duval County fell 10% over the last 12 months440k bbl in the 12 months through Jul 2026, against 490k bbl in the 12 months before. Peak month: Dec 2021, 62.6k bbl.Oil, bbl per month025k50k75kPeak 62.6k (Dec 21)36.4k20222023202420252026
Oil output in Duval County fell 10% over the last 12 months440k bbl in the 12 months through Jul 2026, against 490k bbl in the 12 months before. Peak month: Dec 2021, 62.6k bbl.Oil, bbl per month025k50k75kPeak 62.6k (Dec 21)36.4k'22'23'24'25'26

Gas output in Duval County rose 5% over the last 12 months

3.5M mcf in the 12 months through Jul 2026, against 3.3M mcf in the 12 months before. Peak month: May 2022, 444k mcf.

Gas output in Duval County rose 5% over the last 12 months3.5M mcf in the 12 months through Jul 2026, against 3.3M mcf in the 12 months before. Peak month: May 2022, 444k mcf.Gas, mcf per month0100k200k300k400k500kPeak 444k (May 22)241k20222023202420252026
Gas output in Duval County rose 5% over the last 12 months3.5M mcf in the 12 months through Jul 2026, against 3.3M mcf in the 12 months before. Peak month: May 2022, 444k mcf.Gas, mcf per month0100k200k300k400k500kPeak 444k (May 22)241k'22'23'24'25'26

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 Duval County

Ranked by what they produced in the last 12 months. Sort, filter by operator or field, and open any lease for its month-by-month ledger.

Showing 25 of 150 (the 150 largest of 346 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 Duval County

Who runs the leases, and what they produce

Your royalty check comes from the operator. These are the ones with the most output here.

Recent drilling permits in Duval County

For owners

Minerals in Duval County, in plain terms

Rank by oil
100 of 224
Share of Texas oil
0.0%
Producing leases
346
Operators
57

If you inherited mineral rights in Duval County, the money comes from an operator: the company that drills and runs the wells. Here, the largest is Killam Oil Co., Ltd., among 57 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 976 leases in Duval County, of which 346 reported production recently. The state publishes county totals two to three months late, so Jul 2026 is the newest month.