Oil & gas wells in Monroe County, IL
469 catalogued wells in Monroe County, Illinois, from the state regulator registry and the federal orphaned-well inventory.
Dataset updated . Derived from public data sources.
At a glance
Monroe County, Illinois has 469 catalogued oil & gas wells: 77 active (16%), 241 plugged & abandoned (51%) and 4 documented orphans. It ranks 52nd of the 98 Illinois counties WellCensus profiles by well count and holds 0.3% of the state's 174,478 catalogued wells.
Catalogued wells
469
Active
77
Plugged
241
Documented orphans
4
What is the status of oil and gas wells in Monroe County?
16% of Monroe County's wells are active, 3 percentage points below the Illinois share of 19%. 51% are plugged & abandoned, against 61% statewide and 47% nationally. 2 wells (0.4%) are shut-in — unplugged but idle. 4 wells (0.9%) are documented orphans with no operator able to plug them, compared with 2% across Illinois and 4% nationally. The remaining 145 carry status codes outside those classes, such as permitted or cancelled locations.
What kinds of wells are in Monroe County?
By product class, 129 of the county's wells (28%) are oil wells, 0 (0%) gas wells and 45 (10%) injection wells. Statewide the oil share is 40% and the gas share 1%. The deepest total depth published for a Monroe County well is 2,768 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 Monroe County compare with other Illinois counties?
Monroe County has the 52nd-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. By documented orphans it ranks 43rd in Illinois.
Who operates wells in Monroe County?
142 distinct operators of record are linked to wells in Monroe County. 98% 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 Monroe County
🔒 Create a free account to export CSV| Well | API # / state ID | Status | Type | Operator |
|---|---|---|---|---|
| Dannehold 2 | 12-133-20895 | Orphaned | Oil | Southern IL Exploration Company |
| Theobald 6 | 12-133-20836 | Other status | Other type | Kelly, John W. |
| Theobald 7 | 12-133-20837 | Other status | Other type | Kelly, John W. |
| Krause, Charles J. 1 | 12-133-00280 | Orphaned | Other type | Maroney |
| Dannehold 1 | 12-133-20872 | Orphaned | Other type | White, W. Carl |
| Kolmer-Ries etal Unit 2 | 12-133-21219 | Other status | Oil | Pard Company |
| Ries, Edwin 15 | 12-133-21495 | Other status | Oil | Monroe Co. Oil Trust |
| Stumph, Minnie 1 | 12-133-00027 | Plugged & abandoned | Other type | Koenigsmark, Robert J. Trustee |
| Besher, Floyd 1 M-3-54 | 12-133-00042 | Plugged & abandoned | Other type | Sun Production Co.(Sun Oil) |
| Smithton Hunting & Fishing 1 | 12-133-00050 | Plugged & abandoned | Other type | Willson C |
| Henry, M. 1 | 12-133-00074 | Plugged & abandoned | Other type | Davoust, R. C. Company |
| Gummershimer 1 | 12-133-00101 | Plugged & abandoned | Other type | Morris Etal |
| Rose, W. E. 1 | 12-133-00102 | Plugged & abandoned | Other type | Hacker, C. A. |
| Toenjes, John 1 | 12-133-00109 | Plugged & abandoned | Other type | Petrol Company |
| Reuff, Charles 1 | 12-133-00114 | Plugged & abandoned | Other type | Petrol Company |
| Schlegel 1 | 12-133-00115 | Plugged & abandoned | Other type | Ora Production Co |
| 1 | 12-133-00118 | Plugged & abandoned | Other type | Waterloo & Columbia RR |
| 2 | 12-133-00119 | Plugged & abandoned | Other type | Columbia Waterloo Rr |
| Frierdich, Franziska 1 | 12-133-00120 | Plugged & abandoned | Other type | Petrol Company |
| Frierdich, Robert 1 | 12-133-00121 | Active | Oil | Ellis & Sutherland |
| Frierdich, Robert 2 | 12-133-00122 | Plugged & abandoned | Other type | Ellis & Sutherland |
| Frierdich, Robert 5 | 12-133-00123 | Plugged & abandoned | Oil | Ellis & Sutherland |
| Frierdich 6 | 12-133-00124 | Active | Oil | Ellis & Sutherland |
| Frierdich 7 | 12-133-00125 | Active | Oil | Ellis & Sutherland |
| Gaertner, C. 5 | 12-133-00126 | Plugged & abandoned | Other type | Ohio Oil Co., The |
A sample of the county’s wells — every catalogued well has its own page. Browse all 469 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 Monroe County, IL?
Monroe County, Illinois has 469 catalogued oil & gas wells: 77 active, 241 plugged and 4 documented orphans.
How many orphaned wells are in Monroe County?
4 wells in Monroe County, Illinois are documented orphans — unplugged with no solvent operator of record, the 43rd-highest count among Illinois counties.
What share of wells in Monroe County are plugged?
241 of Monroe County's 469 catalogued wells (51%) 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); Monroe County ranks 52nd with 469.
How many companies operate wells in Monroe County?
142 distinct operators of record are linked to catalogued wells in Monroe 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 Monroe County, Illinois”, https://wellcensus.com/wells/illinois/monroe (data as of October 10, 2026).