Oil & gas wells in Mercer County, IL
131 catalogued wells in Mercer County, Illinois, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Mercer County, Illinois has 131 catalogued oil & gas wells: 0 active (0%), 12 plugged & abandoned (9%) and 0 documented orphans. It ranks 77th of the 98 Illinois counties WellCensus profiles by well count and holds 0.1% of the state's 174,478 catalogued wells.
Catalogued wells
131
Active
0
Plugged
12
Documented orphans
0
What is the status of oil and gas wells in Mercer County?
0% of Mercer County's wells are active, 19 percentage points below the Illinois share of 19%. 9% are plugged & abandoned, against 61% statewide and 47% nationally. No documented orphaned wells are recorded in Mercer County; Illinois as a whole has 3,986. The remaining 119 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Mercer County?
By product class, 0 of the county's wells (0%) are oil wells, 0 (0%) gas wells and 0 (0%) injection wells. Statewide the oil share is 40% and the gas share 1%. The deepest total depth published for a Mercer County well is 3,716 ft, against 29,864 ft for Illinois as a whole. 100% of the county's wells carry coordinates and appear on the map.
How does Mercer County compare with other Illinois counties?
Mercer County has the 77th-most catalogued wells of the 98 Illinois counties with at least 25. The median Illinois county on WellCensus has 525 wells. The largest, Crawford County, has 22,961.
Who operates wells in Mercer County?
27 distinct operators of record are linked to wells in Mercer County. 97% 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 Mercer County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| 17 | 12-131-00020 | Other status | Other type | Alco Oil & Gas Corp. |
| Well API 12-131-00125 | 12-131-00125 | Other status | Other type | Alco Oil & Gas Corp. |
| Dellitts J W 18 | 12-131-00143 | Other status | Other type | Coal Valley Mng Co |
| T-2 | 12-131-00171 | Other status | Other type | Illinois Power Co. |
| Fullerton 1 | 12-131-00172 | Plugged & abandoned | Other type | Kelly, Harold L. |
| Deal J T | 12-131-00182 | Other status | Other type | — |
| Scott,P 1 | 12-131-00185 | Plugged & abandoned | Other type | Plymouth Well Co |
| Frase Max J Mrs 1 | 12-131-00189 | Plugged & abandoned | Other type | Two Rivers Petroleum Co., Inc. |
| Greenwood T F | 12-131-00190 | Other status | Other type | Unknown |
| Smith 1 | 12-131-00191 | Other status | Other type | No Company |
| Mcgaw 1 | 12-131-00205 | Plugged & abandoned | Other type | Cofer Lee |
| 1 | 12-131-00217 | Other status | Other type | Hydraulic-Press Brck |
| 12 | 12-131-00220 | Other status | Other type | Hydraulic-Press Brck |
| 13 | 12-131-00221 | Other status | Other type | Hydraulic-Press Brck |
| Fairbairn R J 1 | 12-131-00227 | Other status | Other type | — |
| Fairbairn R J 2 | 12-131-00228 | Other status | Other type | — |
| Fairbairn R J 3 | 12-131-00229 | Other status | Other type | — |
| W S Butcher 1 | 12-131-00234 | Plugged & abandoned | Other type | Nelson-Pattersn-Edws |
| Well API 12-131-00236 | 12-131-00236 | Plugged & abandoned | Other type | Gooden |
| 1 | 12-131-00238 | Plugged & abandoned | Other type | Little Star Coal |
| Maloney, W. J. | 12-131-00271 | Other status | Other type | Unknown |
| Nemmick, L | 12-131-00286 | Other status | Other type | Neidig J I |
| Matherville City | 12-131-00288 | Other status | Other type | Jones & Schmeiser |
| Fee 1 | 12-131-00294 | Plugged & abandoned | Other type | Cofer Lee |
| Keithsburg 1-49 | 12-131-00296 | Other status | Other type | Layne Western Co., Inc. |
A sample of the county’s wells — every catalogued well has its own page. Browse all 131 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 Mercer County, IL?
Mercer County, Illinois has 131 catalogued oil & gas wells: 0 active, 12 plugged and 0 documented orphans.
How many orphaned wells are in Mercer County?
No documented orphaned wells are currently recorded in Mercer County, Illinois.
What share of wells in Mercer County are plugged?
12 of Mercer County's 131 catalogued wells (9%) are plugged & abandoned, compared with 61% across Illinois.
Which Illinois county has the most oil and gas wells?
Crawford County has the most catalogued wells of any Illinois county on WellCensus (22,961); Mercer County ranks 77th with 131.
How many companies operate wells in Mercer County?
27 distinct operators of record are linked to catalogued wells in Mercer County, Illinois.
Nearby in the Illinois rankings
About this data
Source: Illinois State Geological Survey 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 Mercer County, Illinois”, https://wellcensus.com/wells/illinois/mercer (data as of October 10, 2026).