Skip to content
Royalty Clerk

Starr County, Texas

Oil and gas wells in and near ZIP code 78588

  • 148wells inside the ZIP
  • 442within 3 miles of it
  • 6drilling locations in two years
  • 37square miles of land

The ZIP code and 3 miles around it

Wells and drilling locations in and around 78588

Map of ZIP code 78588, Texas, outlined, with 148 oil and gas wells inside it and 442 within 3 miles of its edge as dots, and 6 drilling locations permitted in two years.
  • Drilling locations6Permits issued in the last two years
  • Producing wells159On a lease reporting production now
  • Not producing193Shut in, inactive or no lease on record
  • Plugged90The state's wellbore record says plugged

The solid line is ZIP code 78588 as the US Census Bureau draws it; the dashed line is 3 miles out. The counts are for everything inside the dashed line: 148 of the wells are inside the ZIP itself. Sources: Railroad Commission of Texas well layers and permit files, US Census Bureau ZIP Code Tabulation Areas and county outlines, town points from GeoNames (CC BY 4.0), base map from USGS The National Map.

See the whole Texas well map

Yes. 148 oil and gas wells with a location on the state's map lie inside ZIP code 78588, 57 of them on producing leases, and 442 within 3 miles of its edge. The state issued 6 drilling permits with a well location within 3 miles in the last 24 months, the newest on March 27, 2026.
Open the live mapWatch Starr County
Use this map on your site

You may show this map on any site, unchanged. Keep the credit line and its link to Royalty Clerk under the map. The picture updates by itself as the state records new wells and permits.

Download the picture (WebP)
<a href="https://royaltyclerk.com/texas/zip/78588"><img src="https://royaltyclerk.com/maps/zip/78588.svg" alt="Map of ZIP code 78588, Texas, outlined, with 148 oil and gas wells inside it and 442 within 3 miles of its edge as dots, and 6 drilling locations permitted in two years." width="1000" height="813" loading="lazy" style="max-width:100%;height:auto;border:0"></a>
<p style="margin:4px 0 0;font-size:14px">Map: <a href="https://royaltyclerk.com/texas/zip/78588">Oil and gas wells in ZIP code 78588, Texas</a> by Royalty Clerk, from Railroad Commission of Texas records</p>

In numbers

Wells in 78588 and within 3 miles

Every well with a location on the state's map, by what it is now. The second column takes in the ZIP and the 3 miles around it.
Oil and gas wells and drilling permits in ZIP code 78588 and within 3 miles of it
WhatInside 78588Within 3 miles
Producing wells57159
Not producing wells63193
Plugged wells2890
Drilling permits, last 24 months16
All wells148442

ZIP code 78588 covers 37 square miles of land: about 4.0 wells to the square mile.

Drilling locations

The newest drilling permits in and near 78588

The 11 newest permits with a well location inside the ZIP or within 3 miles of its edge, with the coordinates of the surface location.
Newest drilling permits in and within 3 miles of ZIP code 78588
IssuedLease and wellWhere
2026-03-27MONTALVO, N. R. 62vertical · API 42-427-34817 · permit 0914356Triad O&G, LLC1.3 mi outside26.67918, -98.49749 on OpenStreetMap (opens in a new tab)
2026-02-20I.V. MONTALVO 'A' 20vertical · API 42-427-34762 · permit 0913510Killam Oil Co., Ltd.1.0 mi outside26.68136, -98.49290 on OpenStreetMap (opens in a new tab)
2025-10-20I.V. MONTALVO 'C' 49vertical · API 42-427-34736 · permit 0911186Killam Oil Co., Ltd.0.1 mi outside26.70549, -98.48194 on OpenStreetMap (opens in a new tab)
2025-10-20I.V. MONTALVO 'C' 58vertical · API 42-427-34743 · permit 0911185Killam Oil Co., Ltd.in 7858826.70747, -98.47911 on OpenStreetMap (opens in a new tab)
2025-03-07MONTALVO, N. R. 62vertical · API 42-427-34817 · permit 0906366Triad O&G, LLC1.3 mi outside26.67918, -98.49749 on OpenStreetMap (opens in a new tab)
2025-03-03MONTALVO, N. R. 62vertical · API 42-427-34817 · permit 0906294Triad O&G, LLC1.3 mi outside26.67918, -98.49749 on OpenStreetMap (opens in a new tab)
2024-08-19I.V. MONTALVO 'C' 55vertical · API 42-427-34739 · permit 0902050Killam Oil Co., Ltd.in 7858826.69967, -98.48055 on OpenStreetMap (opens in a new tab)
2024-08-08I.V. MONTALVO 'C' 56vertical · API 42-427-34767 · permit 0901825Killam Oil Co., Ltd.0.2 mi outside26.69630, -98.48834 on OpenStreetMap (opens in a new tab)
2024-07-11I.V. MONTALVO 'A' 20vertical · API 42-427-34762 · permit 0901123Killam Oil Co., Ltd.1.0 mi outside26.68136, -98.49290 on OpenStreetMap (opens in a new tab)
2024-05-31BLOCK, E. HEIRS 'B' 4vertical · API 42-427-33060 · permit 0899782Osborn,w.b. Oil & Gas Operations2.3 mi outside26.69659, -98.53340 on OpenStreetMap (opens in a new tab)
2024-02-08MONTALVO, N. R. 62vertical · API 42-427-34817 · permit 0897026Triad O&G, LLC1.3 mi outside26.67918, -98.49749 on OpenStreetMap (opens in a new tab)

A permit is permission to drill, not a well. Source: Railroad Commission of Texas drilling permits. This week's permits, statewide

Nearest wells

The wells nearest the middle of 78588

Measured from a point inside the ZIP (26.73530, -98.39424) to each well's surface location, at any distance.
  1. 1Villarreal 130.3 mi ENot producing · API 42-427-00397 · Wagner Oil Company · inside 78588
  2. 2Villarreal 23 L0.4 mi EProducing · API 42-427-00404 · Wagner Oil Company · inside 78588
  3. 3Villarreal 110.6 mi ENot producing · API 42-427-00395 · Wagner Oil Company · inside 78588
  4. 4Villarreal 40.6 mi EProducing · API 42-427-00388 · Wagner Oil Company · inside 78588
  5. 5Villarreal 10.6 mi EPlugged · API 42-427-00386 · Wagner Oil Company · inside 78588
  6. 6Villarreal 10 C0.7 mi NEProducing · API 42-427-00394 · Wagner Oil Company · inside 78588

Who runs them

Operators of the wells in 78588

The companies on record for the wells inside the ZIP, most wells first. A plugged well keeps the last operator the state has for it.
  1. 1Merit Energy Company71 wells39 on producing leases
  2. 2Wagner Oil Company37 wells26 on producing leases
  3. 3Killam Oil Co., Ltd.24 wells3 on producing leases
  4. 4Hilcorp Energy Company10 wells9 on producing leases
  5. 5Valley Petrochemicals, LLC3 wellsnone on a producing lease
  6. 6Overton Park Oil & Gas LP2 wellsnone on a producing lease
  7. 7Proline Energy Resources Inc1 wellnone on a producing lease

Around it

Towns and ZIP codes around 78588

Towns

    ZIP codes that touch 78588

    All of Starr County: leases, operators and production · Starr County well map · Every Texas ZIP code

    FAQ

    Questions people ask

    Are there oil or gas wells near 78588?

    Yes. 148 oil and gas wells with a location on the state's map lie inside ZIP code 78588, 57 of them on producing leases, and 442 within 3 miles of its edge. The state issued 6 drilling permits with a well location within 3 miles in the last 24 months, the newest on March 27, 2026.

    Is this the same area as the Postal Service's ZIP code?

    Nearly. The Postal Service does not publish ZIP code boundaries, so we use the US Census Bureau's ZIP Code Tabulation Area for 78588, built from census blocks where most addresses use that ZIP. The edges can differ from mail delivery by a street or two, and a few ZIP codes (post office boxes, single buildings) have no area of their own.

    Do I own minerals under a well in 78588?

    A well nearby says nothing about who owns the minerals under it. The county's mineral roll lists who is paid on each producing lease. Search a name to see whether the Starr County roll lists it.

    Search a name

    Where do the numbers come from?

    Every dot is a well location from the Railroad Commission of Texas well layers, or a drilling permit's surface location from its permit files, issued in the last 24 months. A well counts as producing when its lease reported oil or gas in its newest months, and as plugged when the state's wellbore record says so. Nothing on this page comes from owners or from addresses.

    Own land or minerals near 78588?

    See whether a county roll lists your name, and get an email when a permit or a new well is filed near you.

    Search a family nameWatch Starr County

    Sources