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Cook County, Illinois / Police Department

Agency file

Police Department

Source file: Cook County, Illinois — Employee Payroll / ingested Jun 19, 2026

The Police Department provides law enforcement and public safety — patrol, criminal investigation, and emergency response.

In 2018, this agency had 83 employees with median total compensation of $17,792; the highest distinct record was $25,226.

Year
2018
Total payroll
$1.4M
Employees
83
Median total
$17,792
Highest record
$25,226

What the records show

Compensation analytics

These summaries compare pay within the agency before listing individual records.

Salary distribution

How 2018 total compensation is spread across the 83 employees. Each bar is a pay range; taller bars mean more people earn in that range. The amber line marks the median ($17,792) — half earn less, half more. The far-right bar collects the highest earners.

Average pay composition

  • Base — $17,016 (100%)
  • Overtime — $0 (0%)
  • Other — $0 (0%)
  • Benefits — $0 (0%)

What an average paycheck here is made of — base salary versus overtime, other pay (bonuses, allowances), and benefits. A large overtime or other-pay share means take-home often exceeds base salary.

Pay percentiles

10th
25th
Median
75th
90th
$10,389
$15,965
$17,792
$20,529
$21,989

The pay ladder for this department. Someone at the 90th percentile earns $21,989 — more than 90% of the department; the 10th percentile earns $10,389. The shaded band is the middle half of employees (25th–75th percentile).

Largest job titles

County Police Officer
50 · $17,792
County Police Sergeant
10 · $21,061
Deputy Sheriff D2B
4 · $13,947
Police Commander
3 · $21,925
Administrative Assistant II
3 · $11,331

The most common job titles in this department by headcount, with the median total compensation for each. Click a title to see everyone who holds it.

Record list

Employees

Page 1

Richard O'Brien

County Police Sergeant/Police Department

2018 total comp
$20,723
Base pay
$20,723
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$20,723
Hire date
1995-06-12
Middle name
P

Source-specific fields

Employee Identifier
848afe7e-f3ef-4cf6-9595-3149d37a4288
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
1330
Office
1231
Position Id
1804042

At Police Department, Richard O'Brien serves as a County Police Sergeant. Hired in 1995, they have about 23 years of service. Their 2018 pay totaled $20,723.

Salvatore Marra

County Police Officer/Police Department

2018 total comp
$20,669
Base pay
$20,669
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$20,669
Hire date
1993-07-26

Source-specific fields

Employee Identifier
76f7825e-f47b-4953-8f3f-96ccdb7b1c3d
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
1328
Office
1231
Position Id
1803902

Salvatore Marra holds the role of County Police Officer at Police Department. They have served since 1993 (about 25 years). In 2018, their total compensation was $20,669.

Bonnie Busching

County Police Sergeant/Police Department

2018 total comp
$20,529
Base pay
$20,529
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$20,529
Hire date
1998-10-13
Middle name
J

Source-specific fields

Employee Identifier
457ea408-cc55-4bf0-8a55-300540571b7f
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
1330
Office
1231
Position Id
1803985

Bonnie Busching is a County Police Sergeant at Police Department. Hired in 1998, they have about 20 years of service. 2018 total compensation came to $20,529.

Vincent Garrett

County Police Sergeant/Police Department

2018 total comp
$20,410
Base pay
$20,410
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$20,410
Hire date
1995-08-07
Middle name
F

Source-specific fields

Employee Identifier
140d8934-1620-45da-801d-ccbd56316bcb
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
1330
Office
1231
Position Id
1803942

Vincent Garrett is a County Police Sergeant at Police Department. Their tenure dates to 1995, about 23 years. 2018 total compensation came to $20,410.

Luis Domenech

County Police Sergeant/Police Department

2018 total comp
$20,211
Base pay
$20,211
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$20,211
Hire date
2004-11-01
Middle name
A

Source-specific fields

Employee Identifier
16786a25-996c-42bd-a029-7dc908593174
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
1330
Office
1231
Position Id
1803925

Luis Domenech is a County Police Sergeant at Police Department. Hired in 2004, they have about 14 years of service. 2018 total compensation came to $20,211.

Terrence Ross

County Police Officer/Police Department

2018 total comp
$19,947
Base pay
$19,947
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$19,947
Hire date
1995-12-04

Source-specific fields

Employee Identifier
f26d7584-e7af-4eac-aff2-d2a1e95e6296
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
1328
Office
1231
Position Id
1803906

At Police Department, Terrence Ross serves as a County Police Officer. They have served since 1995 (about 23 years). Their 2018 pay totaled $19,947.