Crime Scene Investigator / Forensic Technician in Illinois

$63,936 – $140,784

state pay plan range, a year

classes in the state plan

$124,790

median pay in IL, all employers

370

workers in IL (SOC 19-4092)

Sources: Illinois Department of Central Management Services, Illinois CMS Alphabetic Index of Position Titles (FY 2027, effective July 1, 2026, corrected edition); U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 — state estimates. Data captured September 30, 2026.

Illinois state pay plan Sourced

Published rates for each class, lowest first, effective July 1, 2026. These are the ranges Illinois sets for its own state employees; cities, counties and school districts have their own pay plans.

Class and grade	Published rate
Forensic Scientist Trainee Class 15897 Grade RC-062-15-B · RC-062 Technical Employees	$5,328.00 – $7,480.00 a month $63,936 – $89,760 a year 10 steps Step 1b: $5,328.00 a month Step 1a: $5,495.00 a month Step 1: $5,566.00 a month Step 2: $5,812.00 a month Step 3: $6,051.00 a month Step 4: $6,287.00 a month Step 5: $6,540.00 a month Step 6: $6,788.00 a month Step 7: $7,196.00 a month Step 8: $7,480.00 a month
Grade RC-062-15-Q · RC-062 Technical Employees	$5,556.00 – $7,819.00 a month $66,672 – $93,828 a year 10 steps Step 1b: $5,556.00 a month Step 1a: $5,731.00 a month Step 1: $5,808.00 a month Step 2: $6,062.00 a month Step 3: $6,316.00 a month Step 4: $6,568.00 a month Step 5: $6,840.00 a month Step 6: $7,093.00 a month Step 7: $7,514.00 a month Step 8: $7,819.00 a month
Grade RC-062-15-S · RC-062 Technical Employees	$5,656.00 – $7,937.00 a month $67,872 – $95,244 a year 10 steps Step 1b: $5,656.00 a month Step 1a: $5,834.00 a month Step 1: $5,912.00 a month Step 2: $6,176.00 a month Step 3: $6,425.00 a month Step 4: $6,684.00 a month Step 5: $6,956.00 a month Step 6: $7,209.00 a month Step 7: $7,633.00 a month Step 8: $7,937.00 a month
Grade MS-12-4 · Merit Compensation System salary ranges (MS)	$5,328.00 – $7,480.00 a month $63,936 – $89,760 a year
Forensic Scientist I Class 15891 Grade RC-062-18-B · RC-062 Technical Employees	$6,135.00 – $8,790.00 a month $73,620 – $105,480 a year 10 steps Step 1b: $6,135.00 a month Step 1a: $6,327.00 a month Step 1: $6,424.00 a month Step 2: $6,733.00 a month Step 3: $7,044.00 a month Step 4: $7,369.00 a month Step 5: $7,665.00 a month Step 6: $7,975.00 a month Step 7: $8,449.00 a month Step 8: $8,790.00 a month
Grade RC-062-18-Q · RC-062 Technical Employees	$6,404.00 – $9,187.00 a month $76,848 – $110,244 a year 10 steps Step 1b: $6,404.00 a month Step 1a: $6,602.00 a month Step 1: $6,710.00 a month Step 2: $7,039.00 a month Step 3: $7,367.00 a month Step 4: $7,700.00 a month Step 5: $8,016.00 a month Step 6: $8,336.00 a month Step 7: $8,835.00 a month Step 8: $9,187.00 a month
Grade RC-062-18-S · RC-062 Technical Employees	$6,507.00 – $9,307.00 a month $78,084 – $111,684 a year 10 steps Step 1b: $6,507.00 a month Step 1a: $6,712.00 a month Step 1: $6,821.00 a month Step 2: $7,153.00 a month Step 3: $7,480.00 a month Step 4: $7,817.00 a month Step 5: $8,132.00 a month Step 6: $8,454.00 a month Step 7: $8,944.00 a month Step 8: $9,307.00 a month
Grade MS-19-4 · Merit Compensation System salary ranges (MS)	$6,135.00 – $8,790.00 a month $73,620 – $105,480 a year
Forensic Scientist II Class 15892 Grade RC-062-20-B · RC-062 Technical Employees	$6,820.00 – $9,875.00 a month $81,840 – $118,500 a year 10 steps Step 1b: $6,820.00 a month Step 1a: $7,033.00 a month Step 1: $7,152.00 a month Step 2: $7,513.00 a month Step 3: $7,860.00 a month Step 4: $8,235.00 a month Step 5: $8,595.00 a month Step 6: $8,951.00 a month Step 7: $9,494.00 a month Step 8: $9,875.00 a month
Grade RC-062-20-Q · RC-062 Technical Employees	$7,121.00 – $10,323.00 a month $85,452 – $123,876 a year 10 steps Step 1b: $7,121.00 a month Step 1a: $7,345.00 a month Step 1: $7,474.00 a month Step 2: $7,849.00 a month Step 3: $8,221.00 a month Step 4: $8,611.00 a month Step 5: $8,981.00 a month Step 6: $9,353.00 a month Step 7: $9,925.00 a month Step 8: $10,323.00 a month
Grade RC-062-20-S · RC-062 Technical Employees	$7,236.00 – $10,439.00 a month $86,832 – $125,268 a year 10 steps Step 1b: $7,236.00 a month Step 1a: $7,462.00 a month Step 1: $7,593.00 a month Step 2: $7,966.00 a month Step 3: $8,336.00 a month Step 4: $8,724.00 a month Step 5: $9,096.00 a month Step 6: $9,470.00 a month Step 7: $10,038.00 a month Step 8: $10,439.00 a month
Grade MS-23-4 · Merit Compensation System salary ranges (MS)	$6,820.00 – $9,875.00 a month $81,840 – $118,500 a year
Crime Scene Investigator Class 09980 Grade RC-028-21-B · RC-028 Paraprofessional Human Services Employees	$7,195.00 – $10,485.00 a month $86,340 – $125,820 a year 10 steps Step 1b: $7,195.00 a month Step 1a: $7,423.00 a month Step 1: $7,554.00 a month Step 2: $7,942.00 a month Step 3: $8,325.00 a month Step 4: $8,713.00 a month Step 5: $9,108.00 a month Step 6: $9,489.00 a month Step 7: $10,081.00 a month Step 8: $10,485.00 a month
Grade RC-028-21-Q · RC-028 Paraprofessional Human Services Employees	$7,516.00 – $10,958.00 a month $90,192 – $131,496 a year 10 steps Step 1b: $7,516.00 a month Step 1a: $7,753.00 a month Step 1: $7,894.00 a month Step 2: $8,299.00 a month Step 3: $8,700.00 a month Step 4: $9,103.00 a month Step 5: $9,522.00 a month Step 6: $9,920.00 a month Step 7: $10,537.00 a month Step 8: $10,958.00 a month
Grade RC-028-21-S · RC-028 Paraprofessional Human Services Employees	$7,627.00 – $11,076.00 a month $91,524 – $132,912 a year 10 steps Step 1b: $7,627.00 a month Step 1a: $7,868.00 a month Step 1: $8,010.00 a month Step 2: $8,412.00 a month Step 3: $8,813.00 a month Step 4: $9,225.00 a month Step 5: $9,636.00 a month Step 6: $10,032.00 a month Step 7: $10,651.00 a month Step 8: $11,076.00 a month
Grade MS-25-4 · Merit Compensation System salary ranges (MS)	$7,195.00 – $10,485.00 a month $86,340 – $125,820 a year
Forensic Scientist III Class 15893 Grade RC-062-22-B · RC-062 Technical Employees	$7,602.00 – $11,110.00 a month $91,224 – $133,320 a year 10 steps Step 1b: $7,602.00 a month Step 1a: $7,841.00 a month Step 1: $7,984.00 a month Step 2: $8,400.00 a month Step 3: $8,809.00 a month Step 4: $9,227.00 a month Step 5: $9,653.00 a month Step 6: $10,054.00 a month Step 7: $10,681.00 a month Step 8: $11,110.00 a month
Grade RC-062-22-Q · RC-062 Technical Employees	$7,937.00 – $11,605.00 a month $95,244 – $139,260 a year 10 steps Step 1b: $7,937.00 a month Step 1a: $8,190.00 a month Step 1: $8,342.00 a month Step 2: $8,779.00 a month Step 3: $9,209.00 a month Step 4: $9,641.00 a month Step 5: $10,086.00 a month Step 6: $10,512.00 a month Step 7: $11,162.00 a month Step 8: $11,605.00 a month
Grade RC-062-22-S · RC-062 Technical Employees	$8,055.00 – $11,732.00 a month $96,660 – $140,784 a year 10 steps Step 1b: $8,055.00 a month Step 1a: $8,308.00 a month Step 1: $8,463.00 a month Step 2: $8,890.00 a month Step 3: $9,325.00 a month Step 4: $9,757.00 a month Step 5: $10,206.00 a month Step 6: $10,633.00 a month Step 7: $11,279.00 a month Step 8: $11,732.00 a month
Grade MS-28-4 · Merit Compensation System salary ranges (MS)	$7,832.00 – $11,587.00 a month $93,984 – $139,044 a year

Rates are as the plan publishes them; "a year" figures are conversions. Classes are matched to this job by title (GovJobsWiki editorial rule).

Source: Illinois Department of Central Management Services, Illinois CMS Alphabetic Index of Position Titles (FY 2027, effective July 1, 2026, corrected edition). Data captured September 30, 2026.

Pay in Illinois, all employers Sourced

Forensic Science Technicians (SOC 19-4092) in Illinois, all employers combined: BLS state estimates do not separate government from private.

Measure	IL
Workers	370
10th percentile	$65,780
Median	$124,790
90th percentile	$148,790
National median, government employers	$73,540

Sources: U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 — state estimates; U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics (OEWS), May 2025 — national estimates by ownership. Data captured September 30, 2026.

Employers in Illinois

722 police departments in Illinois.

102 sheriff's offices in Illinois.

Source: Federal Bureau of Investigation, Crime Data Explorer — law-enforcement agencies by state (API). Data captured September 30, 2026.

More about this job

Requirements, hiring process, training, schedule and day-to-day work are on the national Crime Scene Investigator / Forensic Technician page.

Crime Scene Investigator / Forensic Technician in Illinois

Illinois state pay plan Sourced

Pay in Illinois, all employers Sourced

Employers in Illinois

More about this job

Crime Scene Investigator / Forensic Technician in other states