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Cook County, Illinois / County Treasurer

Agency file

County Treasurer

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

The County Treasurer manages public finances — collecting revenue and taxes, budgeting, accounting, and financial oversight.

In 2018, this agency had 78 employees with median total compensation of $20,687; the highest distinct record was $44,021.

Year
2018
Total payroll
$1.7M
Employees
78
Median total
$20,687
Highest record
$44,021

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 78 employees. Each bar is a pay range; taller bars mean more people earn in that range. The amber line marks the median ($20,687) — half earn less, half more. The far-right bar collects the highest earners.

Average pay composition

  • Base — $22,121 (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
$11,748
$16,888
$20,687
$28,179
$33,654

The pay ladder for this department. Someone at the 90th percentile earns $33,654 — more than 90% of the department; the 10th percentile earns $11,748. The shaded band is the middle half of employees (25th–75th percentile).

Largest job titles

Administrative Analyst I
11 · $16,644
Administrative Assistant IV
6 · $20,997
Administrative Assistant III
6 · $18,226
Systems Analyst V
4 · $33,387
Accountant III
4 · $14,003

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.

YearTotal payrollEmployeesMedian pay
2016
$1.9M
—
107
—
$17,545
—
2017
$1.9M
▲ 0.9%
112
▲ 4.7%
$17,373
▼ 1.0%
2018
$1.7M
▼ 9.7%
78
▼ 30.4%
$20,687
▲ 19.1%

Record list

Employees

Page 1

Patrick Nester

Chief Financial Officer/County Treasurer

2016 total comp
$39,652
Base pay
$39,652
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$39,652
Hire date
2004-01-12
Middle name
A

Source-specific fields

Employee Identifier
7199d794-b0cf-45a1-ba82-0880ad362254
Fiscal Period
2016Q2
Fiscal Quarter
2
Job Code
120
Office
1060
Position Id
1331

Patrick Nester is a Chief Financial Officer at County Treasurer. Hired in 2004, they have about 12 years of service. 2016 total compensation came to $39,652.

Thomas Corfman

Deputy Director of Pub Rel & Com Rel/County Treasurer

2018 total comp
$39,577
Base pay
$39,577
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$39,577
Hire date
2017-01-11

Source-specific fields

Employee Identifier
6bb6f406-3f61-4387-8ac7-7fa00d3ca096
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
5351
Office
1060
Position Id
1300072

Thomas Corfman works as a Deputy Director of Pub Rel & Com Rel for County Treasurer. They have served since 2017 (about a year). Thomas earned $39,577 in 2018.

David Byrnes

Data Services Administrator/County Treasurer

2018 total comp
$39,323
Base pay
$39,323
Overtime
$0
Other pay
$0
Benefits
$0
Total compensation
$39,323
Hire date
2004-04-05
Middle name
W

Source-specific fields

Employee Identifier
e874fd01-ca00-42bf-994f-279c2de6117d
Fiscal Period
2018Q2
Fiscal Quarter
2
Job Code
193
Office
1060
Position Id
600001

David Byrnes works as a Data Services Administrator for County Treasurer. Their tenure dates to 2004, about 14 years. David earned $39,323 in 2018.