Texas county · RRC district 03

Jefferson County

Jefferson County reported 306,779 barrels of oil and 1.4 million mcf of gas in the 12 months through Jul 2026. That ranks 115th of 224 Texas counties by oil.

County dossier · #115 of 224 for oil

306,779bbl oil, last 12 months−9% vs prior year

Producing leases: 91of 279 on record
Operators: 26
Fields: 60
Top operator: Hilcorp Energy Company

Own minerals in Jefferson County?

Upload a royalty check stub or a phone photo. We compare each month with the Jul 2026 state numbers for the leases below.

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Where it sits

This county

Jefferson County · RRC district 03

Gas, last 12 months: 1,421,298 mcf
Share of Texas oil: <0.1%
Leases on record: 279
Data through: Jul 2026

Production

Five years of output in Jefferson 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 Jefferson County fell 9% over the last 12 months

307k bbl in the 12 months through Jul 2026, against 337k bbl in the 12 months before. Peak month: Apr 2022, 50.8k bbl.

Gas output in Jefferson County held steady over the last 12 months

1.4M mcf in the 12 months through Jul 2026, against 1.5M mcf in the 12 months before. Peak month: May 2022, 294k 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 Jefferson 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.

Find a lease in this listOperatorSort

THOMAS, E., MRS. ET AL
03-10454Hilcorp Energy CompanyFannett
18,600bbl oil−2% on the year before
GLADYS CITY
03-03963Rheaco Oil Company, Ltd.Spindletop
15,931bbl oil+21% on the year before
SONNY V
03-26652Olipdp II, LLCPort Acres (Marg-Frio Cons.)
14,653bbl oil+81% on the year before
FITZHUGH-BURRELL
03-28088Fort Apache Energy, Inc.Fannett
13,891bbl oil−46% on the year before
MCFADDIN TRUST
03-00702Gepard Energy IncClam Lake
13,266bbl oil−14% on the year before
SABCO FOLTS
03-25866White Marlin Operating Co, LLCLA Belle (8600)
12,240bbl oil−5% on the year before
MCFADDIN
03-257094Ballard Exploration Company,inc.Taylor Bayou, S. (Hackberry 1)
257,205mcf gas−12% on the year before
STATE TRACT 29
03-269162Ballard Exploration Company,inc.Pleasure Island (Hackberry 2)
245,270mcf gas−3% on the year before
SUN FEE
03-203126Hilcorp Energy CompanyNome N.e. (12800)
215,169mcf gas+28% on the year before
MCDERMOND, F.
03-12200Hilcorp Energy CompanyNome Se. (Frio, Up)
8,193bbl oil0% on the year before
MMK
03-26396Olipdp II, LLCPort Acres (Marg-Frio Cons.)
7,593bbl oil−24% on the year before
SUN-HARDER A
03-242413Hilcorp Energy CompanyRebel (Yegua)
149,263mcf gas−3% on the year before
JEFFERSON LAND CO. A/C #1
03-09043Milestone Operating, Inc.Lovells Lake (Marg. 2)
6,351bbl oil−17% on the year before
MCFADDIN STATE
03-00701Gepard Energy IncClam Lake
5,206bbl oil−61% on the year before
CLARK
03-11431Rheaco Oil Company, Ltd.Spindletop
5,112bbl oil−14% on the year before
ENGLIN, JOSIE
03-11341Puls Operating CompanyStowell, S. (Stewart U-3)
4,833bbl oil+34% on the year before
FOLTS, W. H. ET AL
03-11360White Marlin Operating Co, LLCLA Belle (8600)
4,631bbl oil−27% on the year before
KEELAND GAS UNIT
03-280482Hilcorp Energy CompanyClaude Watts (Yegua 12600)
107,557mcf gas+115% on the year before
DAVIS
03-1864919th Hole Production, LLCStowell, S. (Crawford, L.)
4,523bbl oil+9% on the year before
BLAUW-PAETZ
03-09024Shoco Production LLCStowell (Sullivan LF)
4,116bbl oil−35% on the year before
GLADYS CITY
03-03959Kingwood Exploration LLCSpindletop
4,040bbl oil+14% on the year before
WALLER, THOMAS F.
03-22468Sawtooth Operating Co., Inc.Stowell (6500 -C-)
3,081bbl oilno full prior year
MCFADDIN, W.P.H.
03-03960Kingwood Exploration LLCSpindletop
3,004bbl oil+32% on the year before
GREY WOLF
03-24520Reo Operating LLCNome
2,953bbl oil+26% on the year before
MCLEAN UNIT 4
03-27819Magnum Producing, LPBig Hill
2,795bbl oil−34% on the year before

Producing leases in Jefferson County

THOMAS, E., MRS. ET AL03-10454Hilcorp Energy CompanyFannett	18,600bbl oil	−2%
GLADYS CITY03-03963Rheaco Oil Company, Ltd.Spindletop	15,931bbl oil	+21%
SONNY V03-26652Olipdp II, LLCPort Acres (Marg-Frio Cons.)	14,653bbl oil	+81%
FITZHUGH-BURRELL03-28088Fort Apache Energy, Inc.Fannett	13,891bbl oil	−46%
MCFADDIN TRUST03-00702Gepard Energy IncClam Lake	13,266bbl oil	−14%
SABCO FOLTS03-25866White Marlin Operating Co, LLCLA Belle (8600)	12,240bbl oil	−5%
MCFADDIN03-257094Ballard Exploration Company,inc.Taylor Bayou, S. (Hackberry 1)	257,205mcf gas	−12%
STATE TRACT 2903-269162Ballard Exploration Company,inc.Pleasure Island (Hackberry 2)	245,270mcf gas	−3%
SUN FEE03-203126Hilcorp Energy CompanyNome N.e. (12800)	215,169mcf gas	+28%
MCDERMOND, F.03-12200Hilcorp Energy CompanyNome Se. (Frio, Up)	8,193bbl oil	0%
MMK03-26396Olipdp II, LLCPort Acres (Marg-Frio Cons.)	7,593bbl oil	−24%
SUN-HARDER A03-242413Hilcorp Energy CompanyRebel (Yegua)	149,263mcf gas	−3%
JEFFERSON LAND CO. A/C #103-09043Milestone Operating, Inc.Lovells Lake (Marg. 2)	6,351bbl oil	−17%
MCFADDIN STATE03-00701Gepard Energy IncClam Lake	5,206bbl oil	−61%
CLARK03-11431Rheaco Oil Company, Ltd.Spindletop	5,112bbl oil	−14%
ENGLIN, JOSIE03-11341Puls Operating CompanyStowell, S. (Stewart U-3)	4,833bbl oil	+34%
FOLTS, W. H. ET AL03-11360White Marlin Operating Co, LLCLA Belle (8600)	4,631bbl oil	−27%
KEELAND GAS UNIT03-280482Hilcorp Energy CompanyClaude Watts (Yegua 12600)	107,557mcf gas	+115%
DAVIS03-1864919th Hole Production, LLCStowell, S. (Crawford, L.)	4,523bbl oil	+9%
BLAUW-PAETZ03-09024Shoco Production LLCStowell (Sullivan LF)	4,116bbl oil	−35%
GLADYS CITY03-03959Kingwood Exploration LLCSpindletop	4,040bbl oil	+14%
WALLER, THOMAS F.03-22468Sawtooth Operating Co., Inc.Stowell (6500 -C-)	3,081bbl oil	n/a
MCFADDIN, W.P.H.03-03960Kingwood Exploration LLCSpindletop	3,004bbl oil	+32%
GREY WOLF03-24520Reo Operating LLCNome	2,953bbl oil	+26%
MCLEAN UNIT 403-27819Magnum Producing, LPBig Hill	2,795bbl oil	−34%

Showing 25 of 91.

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SourceTexas Railroad Commission, Production Data Query. Ranked by an approximate value of last-12-month output, so oil and gas wells sort together.

In Jefferson 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.

Operators in Jefferson County, by oil

Hilcorp Energy leads

Fields in Jefferson County, by oil

Fannett leads

More operators here

OperatorKingwood Exploration LLC5 OperatorS & S Operating Company, Inc.7 OperatorWhite Stride LLC3 OperatorSawtooth Operating Co., Inc.2

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Recent drilling permits in Jefferson County

SUNFLOWER 2 AZM #2
new drill · Exxonmobil Low C Sol on Stor LLC · Jefferson County
Permit 0916286 · Jun 10, 2026

For owners

Minerals in Jefferson County, in plain terms

Rank by oil: 115 of 224
Share of Texas oil: 0.0%
Producing leases: 91
Operators: 26

If you inherited mineral rights in Jefferson County, the money comes from an operator: the company that drills and runs the wells. Here, the largest is Hilcorp Energy Company, among 26 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 279 leases in Jefferson County, of which 91 reported production recently. The state publishes county totals two to three months late, so Jul 2026 is the newest month.