Illinois / Human Services / Internal Security Inv I

Job-title file

Internal Security Inv I

Carry out the duties of this position in support of the agency's public mission.

9 employees hold this title in Human Services. Median total compensation for the role is $65,800, below the department median of $74,500.

Employees: 9
Total payroll: $583.9K
Role median: $65,800
Agency median: $74,500
Comparison: Below

What the records show

Role pay distribution

Pay distribution for this role

$2,900$147,744+

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

How total compensation varies among the 9 people in this role. Even for one job title, pay differs with seniority, step, overtime, and tenure. Each bar is a pay range; the far-right bar collects the highest earners.

Compare departments

This role across Illinois

Internal Security Inv I is held in 3 Illinois departments. In Human Services, the median of $65,800 ranks #2 of 3.

Highest-paying departments for this role

State Lottery

$80,200 · 1

State Police

$65,750 · 18

Median total compensation for the Internal Security Inv I role in other Illinoisdepartments (highest first). Each bar links to that department’s page for this role.

Same department

Other job titles in Human Services

Account Technician I 70
Account Technician II 74
Accountant 46
Accountant Advanced 44
Administrative Assistant I 100
Administrative Assistant I 73
Administrative Assistant II 65
Cook I 47
Disabil Claims Adjudicator Trainee 95
Disability Claims Adjudicator I 63
Domestic Worker 175
Educator 54
Executive I 410
Executive II 162
Habilitation Program Coordinator 75
Human Resources Representative 120
Human Resources Specialist 52
Human Services Casework Manager 229
Human Services Caseworker 3,405
Internal Security Inv II 40
Maintenance Equipment Operator 48
Maintenance Equipment Operator 40
Mental Health Technician I 1,049
Mental Health Technician I 483
Mental Health Technician II 1,179
Mental Health Technician II 1,091
Mental Health Technician III 159
Mental Health Technician Trainee 507
Mental Health Technicina III 137
Office Assistant 137
Office Associate 217
Office Coordinator 87
Public Aid Eligibility Assistant 423
Public Aid Eligibility Assistant 237
Public Service Administrator 475
Registered Nurse I 378
Registered Nurse II 281
Rehabilitation Case Coordinator I 121
Rehabilitation Case Coordinator II 176
Rehabilitation Counselor 109
Rehabilitation Counselor Senior 162
Rehabilitation Counselor Trainee 54
Residential Care Worker 68
Residential Services Supervisor 86
Secretary Therapy Aide I 658
Secretary Therapy Aide II 44
Secretary Therapy Aide Tr 143
Security Officer 111
Security Therapy Aide I 556
Security Therapy Aide II 46
Senior Public Service Administr 290
Senior Public Service Administrative 200
Social Service Program Planner III 103
Social Service Program Planner IV 54
Social Services Career Trainee 620
Social Worker II 106
Staff Development Specialist I 153
Staff Development Specialist I 111
Stationary Engineer 63
Support Service Worker 440

Record list

Employees with this title

Page 1

Teresa Knight

Internal Security Inv I/Human Services

2024 total comp

$149,600

Sub-department: Ludeman Development Center
Base pay: $0
Overtime: $0
Other pay: $149,600
Benefits: $0
Total compensation: $149,600
Union / bargaining unit: Collective Bargaining
Work county: Cook

Source-specific fields

4-D Exempt: Yes
Employment Status: CERTIFIED
Period Pay Rate: $6,900
Rutan Exempt: No

Teresa Knight is a Internal Security Inv I at Human Services within Ludeman Development Center. 2024 total compensation came to $149,600. Union affiliation: Collective Bargaining.

Natlie Richmond

Internal Security Inv I/Human Services

2024 total comp

$138,000

Sub-department: Ludeman Development Center
Base pay: $0
Overtime: $0
Other pay: $138,000
Benefits: $0
Total compensation: $138,000
Union / bargaining unit: Collective Bargaining
Work county: Cook

Source-specific fields

4-D Exempt: Yes
Employment Status: CERTIFIED
Period Pay Rate: $5,000
Rutan Exempt: No

Natlie Richmond works as a Internal Security Inv I for Human Services within Ludeman Development Center. Natlie earned $138,000 in 2024. Their bargaining unit is Collective Bargaining.

Cody Waterkotte

Internal Security Inv I/Human Services

2024 total comp

$91,800

Sub-department: Sexually Violent Persons Program
Base pay: $0
Overtime: $0
Other pay: $91,800
Benefits: $0
Total compensation: $91,800
Union / bargaining unit: Collective Bargaining
Work county: Schuyler

Source-specific fields

4-D Exempt: Yes
Employment Status: CERTIFIED
Period Pay Rate: $4,100
Rutan Exempt: No

Cody Waterkotte holds the role of Internal Security Inv I at Human Services within Sexually Violent Persons Program. In 2024, their total compensation was $91,800. Their bargaining unit is Collective Bargaining.

Gregory Dodson

Internal Security Inv I/Human Services

2024 total comp

$66,400

Sub-department: Murray Development Center
Base pay: $0
Overtime: $0
Other pay: $66,400
Benefits: $0
Total compensation: $66,400
Union / bargaining unit: Collective Bargaining
Work county: Clinton

Source-specific fields

4-D Exempt: No
Employment Status: CERTIFIED
Period Pay Rate: $3,400
Rutan Exempt: No

At Human Services, Gregory Dodson serves as a Internal Security Inv I within Murray Development Center. Their 2024 pay totaled $66,400. Union affiliation: Collective Bargaining.

Anthony Kirk

Internal Security Inv I/Human Services

2024 total comp

$65,800

Sub-department: Mental Health Administrative
Base pay: $0
Overtime: $0
Other pay: $65,800
Benefits: $0
Total compensation: $65,800
Union / bargaining unit: Collective Bargaining
Work county: Sangamon

Source-specific fields

4-D Exempt: No
Employment Status: PROB 4 MOS
Period Pay Rate: $3,600
Rutan Exempt: No

At Human Services, Anthony Kirk serves as a Internal Security Inv I within Mental Health Administrative. Their 2024 pay totaled $65,800. Their bargaining unit is Collective Bargaining.

Angelo Hightower

Internal Security Inv I/Human Services

2024 total comp

$54,100

Sub-department: Choate Developmental Disabilities Center
Base pay: $0
Overtime: $0
Other pay: $54,100
Benefits: $0
Total compensation: $54,100
Union / bargaining unit: Collective Bargaining
Work county: Union

Source-specific fields

4-D Exempt: No
Employment Status: CERTIFIED
Period Pay Rate: $3,100
Rutan Exempt: No

Angelo Hightower holds the role of Internal Security Inv I at Human Services within Choate Developmental Disabilities Center. In 2024, their total compensation was $54,100. They are represented by Collective Bargaining.

Brian Buss

Internal Security Inv I/Human Services

2025 total comp

$9,900

Sub-department: Chester Mental Health Center
Base pay: $0
Overtime: $0
Other pay: $9,900
Benefits: $0
Total compensation: $9,900
Union / bargaining unit: Collective Bargaining
Work county: Randolph

Source-specific fields

4-D Exempt: No
Employment Status: CERTIFIED
Period Pay Rate: $1,300
Rutan Exempt: No

Brian Buss holds the role of Internal Security Inv I at Human Services within Chester Mental Health Center. In 2025, their total compensation was $9,900. Their bargaining unit is Collective Bargaining.

Carl Threlkeld

Internal Security Inv I/Human Services

2024 total comp

$5,400

Sub-department: Choate Developmental Disabilities Center
Base pay: $0
Overtime: $0
Other pay: $5,400
Benefits: $0
Total compensation: $5,400
Union / bargaining unit: Collective Bargaining
Work county: Union

Source-specific fields

4-D Exempt: No
Employment Status: PROB 6 MOS
Period Pay Rate: $2,800
Rutan Exempt: No

At Human Services, Carl Threlkeld serves as a Internal Security Inv I within Choate Developmental Disabilities Center. Their 2024 pay totaled $5,400. Their bargaining unit is Collective Bargaining.

Paul Sowell

Internal Security Inv I/Human Services

2024 total comp

$2,900

Sub-department: Fox Development Center
Base pay: $0
Overtime: $0
Other pay: $2,900
Benefits: $0
Total compensation: $2,900
Union / bargaining unit: Collective Bargaining
Work county: Livingston

Source-specific fields

4-D Exempt: No
Employment Status: CERTIFIED
Period Pay Rate: $2,900
Rutan Exempt: No

At Human Services, Paul Sowell serves as a Internal Security Inv I within Fox Development Center. Their 2024 pay totaled $2,900. Union affiliation: Collective Bargaining.