Agency file

County Assessor

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

The County Assessor is a government agency that delivers public services and programs within its jurisdiction.

In 2018, this agency had 271 employees with median total compensation of $17,235; the highest distinct record was $37,413.

Year: 2018
Total payroll: $5.1M
Employees: 271
Median total: $17,235
Highest record: $37,413

What the records show

Compensation analytics

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

Salary distribution

$354$33,293+

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

How 2018 total compensation is spread across the 271 employees. Each bar is a pay range; taller bars mean more people earn in that range. The amber line marks the median ($17,235) — half earn less, half more. The far-right bar collects the highest earners.

Average pay composition

Base — $18,863 (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

$12,136

$13,993

$17,235

$22,893

$29,267

The pay ladder for this department. Someone at the 90th percentile earns $29,267 — more than 90% of the department; the 10th percentile earns $12,136. The shaded band is the middle half of employees (25th–75th percentile).

Largest job titles

Support Staff Iii-Assessor

17 · $13,094

Residential Junior Analyst I

10 · $14,216

Taxpayer Information Junior Specialist

10 · $13,001

Taxpayer Information Senior Special I

8 · $15,286

Ic Valuations Group Leader III

6 · $25,709

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	$5.4M —	309 —	$16,363 —
2017	$5.4M ▲ 0.9%	286 ▼ 7.4%	$17,235 ▲ 5.3%
2018	$5.1M ▼ 5.3%	271 ▼ 5.2%	$17,235 ±0%

Record list

Employees

Page 1

Dorota Sienkiewicz

Ic Valuations Junior Analyst I/County Assessor

2018 total comp

$11,307

Base pay: $11,307
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $11,307
Hire date: 2016-09-19

Source-specific fields

Employee Identifier: a00ac3d7-52dd-446e-84e9-67a2b6373ad2
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 4884
Office: 1040
Position Id: 9500760

Dorota Sienkiewicz holds the role of Ic Valuations Junior Analyst I at County Assessor. Their tenure dates to 2016, about 2 years. In 2018, their total compensation was $11,307.

Luis Martinez

Deputy Assessor of HR Assessor/County Assessor

2016 total comp

$11,105

Base pay: $11,105
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $11,105
Hire date: 1986-06-16

Source-specific fields

Employee Identifier: 8bf56c76-edf3-4b71-adf5-1344083f0644
Fiscal Period: 2016Q3
Fiscal Quarter: 3
Job Code: 5786
Office: 1040
Position Id: 9500763

Luis Martinez works as a Deputy Assessor of HR Assessor for County Assessor. Hired in 1986, they have about 30 years of service. Luis earned $11,105 in 2016.

Alexandra Pina

Taxpayer Information Junior Specialist/County Assessor

2018 total comp

$10,713

Base pay: $10,713
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,713
Hire date: 2016-06-27

Source-specific fields

Employee Identifier: 0153ed23-6eca-4719-b17a-834040050dd1
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 4910
Office: 1040
Position Id: 9500943

Alexandra Pina is a Taxpayer Information Junior Specialist at County Assessor. Their tenure dates to 2016, about 2 years. 2018 total compensation came to $10,713.

Sabrina Lewis

Support Staff Iii-Assessor/County Assessor

2018 total comp

$10,713

Base pay: $10,713
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,713
Hire date: 2015-08-10

Source-specific fields

Employee Identifier: f4f0db2c-43f9-4261-b8a7-4ca5c5db0ea1
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 4909
Office: 1040
Position Id: 9500946

Sabrina Lewis is a Support Staff Iii-Assessor at County Assessor. Their tenure dates to 2015, about 3 years. 2018 total compensation came to $10,713.

Edna Hernandez

Support Staff Iii-Assessor/County Assessor

2018 total comp

$10,713

Base pay: $10,713
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,713
Hire date: 2015-08-10
Middle name: F

Source-specific fields

Employee Identifier: 15637e7b-561b-4593-90b7-581e0c67180d
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 4909
Office: 1040
Position Id: 9500742

Edna Hernandez works as a Support Staff Iii-Assessor for County Assessor. Hired in 2015, they have about 3 years of service. Edna earned $10,713 in 2018.

Josefina Holmes

Support Staff V - Assessor/County Assessor

2017 total comp

$10,516

Base pay: $10,516
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,516
Hire date: 1995-10-17
Middle name: F

Source-specific fields

Employee Identifier: effdfe43-3970-481c-8cd4-6e038c447091
Fiscal Period: 2017Q1
Fiscal Quarter: 1
Job Code: 4937
Office: 1040
Position Id: 9500932

At County Assessor, Josefina Holmes serves as a Support Staff V - Assessor. They have served since 1995 (about 22 years). Their 2017 pay totaled $10,516.

Kevin O'Brien

Manager of Technician Review-Assesor/County Assessor

2016 total comp

$10,414

Base pay: $10,414
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,414
Hire date: 1981-03-16
Middle name: J

Source-specific fields

Employee Identifier: 23a6c95d-fb80-4637-9a88-4fa2f348dd4e
Fiscal Period: 2016Q1
Fiscal Quarter: 1
Job Code: 5158
Office: 1040
Position Id: 9500822

Kevin O'Brien works as a Manager of Technician Review-Assesor for County Assessor. They have served since 1981 (about 35 years). Kevin earned $10,414 in 2016.

Laura Barragan

Taxpayer Information Junior Specialist/County Assessor

2018 total comp

$10,275

Base pay: $10,275
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,275
Hire date: 2017-01-09
Middle name: A

Source-specific fields

Employee Identifier: 9f290da8-2e54-468b-bbed-84dbe50ef682
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 4910
Office: 1040
Position Id: 9500740

Laura Barragan works as a Taxpayer Information Junior Specialist for County Assessor. Hired in 2017, they have about a year of service. Laura earned $10,275 in 2018.

Grace Mulica

Taxpayer Information Junior Specialist/County Assessor

2018 total comp

$10,275

Base pay: $10,275
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,275
Hire date: 2016-12-27
Middle name: B

Source-specific fields

Employee Identifier: 94034e66-d9f1-43e9-9445-efed34c36a2a
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 4910
Office: 1040
Position Id: 9500830

At County Assessor, Grace Mulica serves as a Taxpayer Information Junior Specialist. Hired in 2016, they have about 2 years of service. Their 2018 pay totaled $10,275.

Thomas Egan

Support Staff Iii-Assessor/County Assessor

2016 total comp

$10,159

Base pay: $10,159
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $10,159
Hire date: 1988-01-06

Source-specific fields

Employee Identifier: 51be163e-080f-43ea-b2e8-a39ba296598c
Fiscal Period: 2016Q4
Fiscal Quarter: 4
Job Code: 4909
Office: 1040
Position Id: 9501030

Thomas Egan works as a Support Staff Iii-Assessor for County Assessor. They have served since 1988 (about 28 years). Thomas earned $10,159 in 2016.