Oil & gas wells in Monterey County, CA
3,871 catalogued wells in Monterey County, California, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Monterey County, California has 3,871 catalogued oil & gas wells: 860 active (22%), 2,481 plugged & abandoned (64%) and 24 documented orphans. It ranks 7th of the 39 California counties WellCensus profiles by well count and holds 2% of the state's 242,471 catalogued wells.
Catalogued wells
3,871
Active
860
Plugged
2,481
Documented orphans
24
What is the status of oil and gas wells in Monterey County?
22% of Monterey County's wells are active, close to the California share of 22%. 64% are plugged & abandoned, against 60% statewide and 47% nationally. 433 wells (11%) are shut-in — unplugged but idle. 24 wells (0.6%) are documented orphans with no operator able to plug them, compared with 1% across California and 4% nationally. The remaining 73 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Monterey County?
By product class, 2,355 of the county's wells (61%) are oil wells, 0 (0%) gas wells and 412 (11%) injection wells. Statewide the oil share is 68% and the gas share 3%. 100% of the county's wells carry coordinates and appear on the map.
How does Monterey County compare with other California counties?
Monterey County has the 7th-most catalogued wells of the 39 California counties with at least 25. The median California county on WellCensus has 675 wells. The largest, Kern County, has 156,849. By documented orphans it ranks 11th in California.
Who operates wells in Monterey County?
202 distinct operators of record are linked to wells in Monterey County. 100% of the county's wells carry a link to a canonical operator profile; the rest list no operator or a name not yet resolved. Each well's page names its operator where the state publishes one.
Wells in Monterey County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| Orradre 56-12 | 04-053-00001 | Plugged & abandoned | Oil | Aera Energy LLC |
| Orradre 219-2 | 04-053-00002 | Shut-in | Oil | Aera Energy LLC |
| Sinclair 3 | 04-053-00003 | Plugged & abandoned | Injection | Pacific Coast Energy Company LP |
| Herbert 1 | 04-053-00004 | Plugged & abandoned | Other type | C. C. Peterson |
| Rosenberg (NCT-1) 262 | 04-053-00005 | Plugged & abandoned | Other type | Chevron U.S.A. Inc. |
| Ash-Sorenson 1 | 04-053-00006 | Plugged & abandoned | Other type | Fred Ash & Sons |
| Rosenberg (NCT-1) 49 | 04-053-00007 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Orradre H2-13 | 04-053-00008 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Orradre 552-12 | 04-053-00009 | Plugged & abandoned | Injection | Aera Energy LLC |
| Orradre T 2-6 | 04-053-00010 | Shut-in | Oil | Aera Energy LLC |
| Rosenberg (NCT-1) 102 | 04-053-00011 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Orradre M12-13 | 04-053-00012 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Aurignac (NCT-1) 27 | 04-053-00013 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Orradre J1-10 | 04-053-00014 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Orradre 194-12 | 04-053-00015 | Plugged & abandoned | Oil | Aera Energy LLC |
| Orradre 84-12 | 04-053-00016 | Plugged & abandoned | Oil | Aera Energy LLC |
| Orradre H6-13 | 04-053-00017 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Rosenberg (NCT-1) 76 | 04-053-00018 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Orradre 86-12 | 04-053-00019 | Plugged & abandoned | Oil | Aera Energy LLC |
| Doud 1-13 | 04-053-00020 | Plugged & abandoned | Oil | W. W. Holmes, Operator |
| Jack 17-16 | 04-053-00021 | Plugged & abandoned | Other type | Tepesquet Oil Corp. |
| Aurignac (NCT-2) 1 | 04-053-00022 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Rosenberg (NCT-1) 201 | 04-053-00024 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Rosenberg (NCT-1) 219 | 04-053-00025 | Plugged & abandoned | Oil | Chevron U.S.A. Inc. |
| Hambey 52-18 | 04-053-00026 | Plugged & abandoned | Oil | Aera Energy LLC |
A sample of the county’s wells — every catalogued well has its own page. Browse all 3,871 in search → (filter by operator, status and type, then export), or find a specific well on the live map.
Frequently asked questions
How many oil and gas wells are in Monterey County, CA?
Monterey County, California has 3,871 catalogued oil & gas wells: 860 active, 2,481 plugged and 24 documented orphans.
How many orphaned wells are in Monterey County?
24 wells in Monterey County, California are documented orphans — unplugged with no solvent operator of record, the 11th-highest count among California counties.
What share of wells in Monterey County are plugged?
2,481 of Monterey County's 3,871 catalogued wells (64%) are plugged & abandoned, compared with 60% across California.
Which California county has the most oil and gas wells?
Kern County has the most catalogued wells of any California county on WellCensus (156,849); Monterey County ranks 7th with 3,871.
How many companies operate wells in Monterey County?
202 distinct operators of record are linked to catalogued wells in Monterey County, California.
Nearby in the California rankings
- Oil & gas wells in California· 242,471 wells
- Orange County, CA· 9,085 wells
- Ventura County, CA· 8,532 wells
- Santa Barbara County, CA· 6,814 wells
- San Luis Obispo County, CA· 2,016 wells
- Solano County, CA· 1,717 wells
- Los Angeles Offshore County, CA· 1,547 wells
- Orphaned wells by state and county· 164,816 nationally
About this data
Source: CalGEM WellSTAR well registry, plus the USGS United States Documented Orphaned Well Database (2026, doi 10.5066/P13FHBYG), as published October 10, 2026 — WellCensus refreshes it monthly. See the methodology for how records are matched, cleaned and scored.
Cite as: WellCensus, “Oil & gas wells in Monterey County, California”, https://wellcensus.com/wells/california/monterey (data as of October 10, 2026).