Illinois Well Data › Boone County

Boone County, Illinois: well depth, yield & drilling cost

Name: Boone County, Illinois water well statistics
Creator: Illinois Well Data
License: https://creativecommons.org/licenses/by/4.0/

✓ 4,750 ISGS records · verified 2026-10-12

165 ftmedian well depth

105 ft–225 fttypical depth range

15 gpmmedian yield (4,086 tests)

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How deep are wells in Boone County, Illinois?

The median drilled well depth in Boone County is 165 ft, based on 4,630 wells with recorded depths in the state ISGS database. Half of all wells fall between 105 ft and 225 ft; 90% are shallower than 275 ft. Wells drilled since 2016 have a median depth of 165 ft.

How much does it cost to drill a well in Boone County?

Applying published per-foot rates to the local median depth of 165 ft: drilling and casing alone typically runs $4,125–$10,725; a complete system including pump, pressure tank, and hookup typically runs $9,900–$16,500. Actual quotes depend on site access, geology, and casing requirements.

What is the static water level in Boone County?

Few static water level measurements are recorded for this county.

How much water do wells in Boone County produce?

The median tested yield is 15 gpm (middle half: 10 gpm–20 gpm), from 4,086 pump tests. A typical household needs 5–10 gpm.

Drilled depth distribution

0–50 ft 127 50–100 ft 866 100–150 ft 985 150–200 ft 857 200–300 ft 1,472 300–400 ft 229 400–600 ft 71 600+ ft 23

Who drills wells in Boone 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
Smith, Allen E.	52
Martin, Charles	46
Nice, Mark E.	25
Binz, David Joseph	21
Anhalt, Tony	14
Beaman, Jessie J.	11
Bull Well Drilling Inc	9
Schuur, Bill	8

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Well records by ZIP code in Boone County

Median depth, water level, and yield for each ZIP code with recorded wells.

Belvidere (61008) — 1,172 wells, median 139 ft
Poplar Grove (61065) — 1,157 wells, median 175 ft
Rockford (61114) — 965 wells, median 180 ft
Caledonia (61011) — 639 wells, median 165 ft
Garden Prairie (61038) — 505 wells, median 140 ft
Capron (61012) — 492 wells, median 130 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.