Illinois Well Data › Marion County
Marion County, Illinois: well depth, yield & drilling cost
✓ 1,432 ISGS records · verified 2026-10-12
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How deep are wells in Marion County, Illinois?
The median drilled well depth in Marion County is 50 ft, based on 1,272 wells with recorded depths in the state ISGS database. Half of all wells fall between 33 ft and 90 ft; 90% are shallower than 130 ft. Wells drilled since 2016 have a median depth of 50 ft.
How much does it cost to drill a well in Marion County?
Applying published per-foot rates to the local median depth of 50 ft: drilling and casing alone typically runs $1,250–$3,250; a complete system including pump, pressure tank, and hookup typically runs $3,000–$5,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Marion County?
Few static water level measurements are recorded for this county.
How much water do wells in Marion County produce?
The median tested yield is 7 gpm (middle half: 3 gpm–20 gpm), from 487 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
Who drills wells in Marion County?
Companies and licensed drillers by number of wells logged in this county, per records filed with the Illinois State Geological Survey.
| Driller | Wells since 2016 |
|---|---|
| Haake, Ralph | 5 |
| Greg A. Evans | 2 |
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Well records by ZIP code in Marion County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Salem (62881) — 280 wells, median 40 ft
- Iuka (62849) — 274 wells, median 86 ft
- Alma (62807) — 165 wells, median 45 ft
- Kinmundy (62854) — 147 wells, median 60 ft
- Kell (62853) — 142 wells, median 70 ft
- Patoka (62875) — 131 wells, median 38 ft
- Odin (62870) — 104 wells, median 40 ft
- Vernon (62892) — 92 wells, median 43 ft
- Centralia (62801) — 90 wells, median 40 ft
- Walnut Hill (62893) — 66 wells, median 40 ft
- Sandoval (62882) — 64 wells, median 37 ft
Method: medians computed from ISGS records (ISGS water wells; engineering, mineral and stratigraphic test borings, mine shafts, outcrops and monitoring wells are excluded, as are wells the survey records as plugged; depths 0-5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.