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Updated July 2026
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Illinois
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Illinois sheriff oversight
Knox County
Jack Harlan
, Sheriff
91
FTE (2022)
Compare with
similar counties
·
Illinois average
Staffing breakdown
source: census_cog_e_2022 2022
Sworn officers
27
(30%)
Custody officers
62
(68%)
Civilian staff
2
(2%)
Total
91