Cook County, Illinois / Adult Probation Department

Agency file

Adult Probation Department

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

The Adult Probation Department runs the corrections system — operating prisons and jails, supervising people in custody, and managing parole or probation.

In 2018, this agency had 542 employees with median total compensation of $22,023; the highest distinct record was $42,290.

Year: 2018
Total payroll: $10.7M
Employees: 542
Median total: $22,023
Highest record: $42,290

What the records show

Compensation analytics

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

Salary distribution

-$3,722$26,971+

Hover a bar for its range; click to filter the list below.

How 2018 total compensation is spread across the 542 employees. Each bar is a pay range; taller bars mean more people earn in that range. The amber line marks the median ($22,023) — half earn less, half more. The far-right bar collects the highest earners.

Average pay composition

Base — $19,783 (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

$13,593

$15,700

$22,023

$22,420

$24,682

The pay ladder for this department. Someone at the 90th percentile earns $24,682 — more than 90% of the department; the 10th percentile earns $13,593. The shaded band is the middle half of employees (25th–75th percentile).

Largest job titles

Adult Probation Officer- Psb

188 · $22,420

Pretrial Officer I- Psb

62 · $22,288

Adult Probation Officer- Psc

52 · $24,669

Adult Probation Officer

45 · $15,700

Supervisor Adult Probation

31 · $24,324

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.

Trend

Year over year

How this department's total payroll, headcount, and median pay changed across the 3 published years.

Year	Total payroll	Employees	Median pay
2016	$11.1M —	647 —	$20,610 —
2017	$10.8M ▼ 2.8%	593 ▼ 8.3%	$21,495 ▲ 4.3%
2018	$10.7M ▼ 0.4%	542 ▼ 8.6%	$22,023 ▲ 2.5%

Record list

Employees

Page 1

Shenea Kirklin

Adult Probation Officer- Psb/Adult Probation Department

2018 total comp

$3,071

Base pay: $3,071
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $3,071
Hire date: 2002-05-06

Source-specific fields

Employee Identifier: a39317d9-030c-40c1-9730-e95305ddf335
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 1567
Office: 1280
Position Id: 9512344

At Adult Probation Department, Shenea Kirklin serves as a Adult Probation Officer- Psb. Their tenure dates to 2002, about 16 years. Their 2018 pay totaled $3,071.

Zachary Westerfield

Adult Probation Officer/Adult Probation Department

2017 total comp

$2,970

Base pay: $2,970
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $2,970
Hire date: 2014-10-20
Middle name: J

Source-specific fields

Employee Identifier: f87d5e4f-d10d-40f7-9954-28d068b2f3d7
Fiscal Period: 2017Q3
Fiscal Quarter: 3
Job Code: 1561
Office: 1280
Position Id: 9512300

Zachary Westerfield holds the role of Adult Probation Officer at Adult Probation Department. Their tenure dates to 2014, about 3 years. In 2017, their total compensation was $2,970.

John Hughes

Adult Probation Officer- Psb/Adult Probation Department

2017 total comp

$2,883

Base pay: $2,883
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $2,883
Hire date: 1988-11-14
Middle name: W

Source-specific fields

Employee Identifier: a741e115-07e4-4a77-98c2-0bb2baddb242
Fiscal Period: 2017Q4
Fiscal Quarter: 4
Job Code: 1567
Office: 1280
Position Id: 9512444

John Hughes works as a Adult Probation Officer- Psb for Adult Probation Department. Their tenure dates to 1988, about 29 years. John earned $2,883 in 2017.

Nicholas Plecas

Adult Probation Officer- Psb/Adult Probation Department

2018 total comp

$2,681

Base pay: $2,681
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $2,681
Hire date: 2008-12-08

Source-specific fields

Employee Identifier: b692b69f-b781-4062-bbdf-c6874e6ada86
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 1567
Office: 1280
Position Id: 1300089

At Adult Probation Department, Nicholas Plecas serves as a Adult Probation Officer- Psb. They have served since 2008 (about 10 years). Their 2018 pay totaled $2,681.