The efforts to reduce jail population during the COVID-19 pandemic has led to a skyrocketing demand in equipment.
Jail officials say they are working to address the supply issues but asked for assistance from other county officials.
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Because of the shortage, anyone assigned to electronic monitoring will be held at the jail until a judge modifies their bond.
In a letter to stakeholders, Cook County Sheriff Tom Dart said as of March 1, the jail population was 5,604. On Thursday it was 4,064. He also said the electronic monitoring program saw a 30% increase since May 2017, almost all of which took place over the last two months.
The jail has come under national scrutiny as a COVID-19 hotspot.