Bexar County, Texas
Oil and gas wells in and near ZIP code 78221
- 476wells inside the ZIP
- 1,278within 3 miles of it
- 1drilling location in two years
- 36square miles of land
The ZIP code and 3 miles around it
Wells and drilling locations in and around 78221
- Drilling locations1Permits issued in the last two years
- Producing wells556On a lease reporting production now
- Not producing372Shut in, inactive or no lease on record
- Plugged350The state's wellbore record says plugged
The solid line is ZIP code 78221 as the US Census Bureau draws it; the dashed line is 3 miles out. The counts are for everything inside the dashed line: 476 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.
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.
<a href="https://royaltyclerk.com/texas/zip/78221"><img src="https://royaltyclerk.com/maps/zip/78221.svg" alt="Map of ZIP code 78221, Texas, outlined, with 476 oil and gas wells inside it and 1,278 within 3 miles of its edge as dots, and 1 drilling location permitted in two years." width="1000" height="1150" 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/78221">Oil and gas wells in ZIP code 78221, Texas</a> by Royalty Clerk, from Railroad Commission of Texas records</p>In numbers
Wells in 78221 and within 3 miles
| What | Inside 78221 | Within 3 miles |
|---|---|---|
| Producing wells | 353 | 556 |
| Not producing wells | 14 | 372 |
| Plugged wells | 109 | 350 |
| Drilling permits, last 24 months | 1 | 1 |
| All wells | 476 | 1,278 |
ZIP code 78221 covers 36 square miles of land and 1.8 of water: about 13 wells to the square mile.
Drilling locations
The newest drilling permits in and near 78221
| Issued | Lease and well | Where | Operator |
|---|---|---|---|
| 2025-04-25 | CASSIN D 19vertical · API 42-029-36584 · permit 0907616Alamo Environmental, Inc. | in 7822129.30759, -98.45662 on OpenStreetMap (opens in a new tab) | Alamo Environmental, Inc. |
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 78221
- 1Metzger, H.l. F 301.4 mi NWProducing · API 42-029-37940 · Sorto, Peters God · inside 78221
- 2Metzger, H.l. Y 71.4 mi NWProducing · API 42-029-38007 · Sorto, Peters God · inside 78221
- 3Metzger, H.l. Y 61.4 mi NWProducing · API 42-029-38008 · Sorto, Peters God · inside 78221
- 4Metzger, H.l. X 91.4 mi NWProducing · API 42-029-38006 · Sorto, Peters God · inside 78221
- 5Metzger, H.l. Y 51.5 mi NWProducing · API 42-029-38009 · Sorto, Peters God · inside 78221
- 6Metzger, H.l. W 91.5 mi NWProducing · API 42-029-38004 · Sorto, Peters God · inside 78221
Who runs them
Operators of the wells in 78221
- 1South Sam Operating Company, LLC371 wells292 on producing leases
- 2Sorto, Peters God81 wells81 on producing leases
- 3Seeker Oil Company, Incorporated24 wellsnone on a producing lease
Around it
Towns and ZIP codes around 78221
FAQ
Questions people ask
Are there oil or gas wells near 78221?
Yes. 476 oil and gas wells with a location on the state's map lie inside ZIP code 78221, 353 of them on producing leases, and 1,278 within 3 miles of its edge. The state issued 1 drilling permit with a well location within 3 miles in the last 24 months, the newest on April 25, 2025.
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 78221, 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 78221?
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 Bexar County roll lists it.
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 78221?
See whether a county roll lists your name, and get an email when a permit or a new well is filed near you.
Sources
- US Census Bureau, 2020 ZIP Code Tabulation Areas, cartographic boundary file at 1:500,000 (cb_2020_us_zcta520_500k)www2.census.gov/geo/tiger/GENZ2020/shp/cb_2020_us_zcta520_500k.zip · file of May 19, 2023, read November 14, 2026
- Railroad Commission of Texas, well layers and drilling permit fileswww.rrc.texas.gov/resource-center/research/data-sets-available-for-download/ · loaded as the state publishes them; figures kept six hours
- US Census Bureau, cartographic boundary files (county lines), through the us-atlas package 3.0.1www.census.gov/geographies/mapping-files/time-series/geo/cartographic-boundary.html · built into the site with its well maps
- GeoNames, towns and their points (CC BY 4.0)www.geonames.org/ · built into the site with its town pages
- USGS The National Map, basemap services (topo and imagery map under the wells), public domainapps.nationalmap.gov/services/ · tiles drawn under the map when it is made