Detective and Criminal Investigator
Criminal investigation combines real, sworn legal authority with judgment work no AI system can perform: a detective's power to interview suspects under caution, execute search warrants, and testify credibly about an investigation's chain of custody rests on individually-held sworn-officer status, reinforced by POST certification requirements in 37 states and D.
We have not ingested real-world usage data for this occupation yet. We show a band only where genuine data exists, rather than estimate one.
What a detective and criminal investigator actually does
Detectives and criminal investigators conduct investigations into suspected violations of federal, state, or local law, examining crime scenes, interviewing witnesses and suspects, collecting and analyzing physical and digital evidence, and preparing investigative reports that support prosecution. Daily work includes coordinating with forensic labs, building a timeline of events from disparate evidence sources, developing informants and confidential sources, and testifying in court about how an investigation was conducted and what it found.
The role is not a separately licensed civilian position: detectives are sworn law-enforcement officers who typically spend 3-5 years on patrol before promotion, and 37 states plus Washington D. C. require Peace Officer Standards and Training (POST) certification to hold any sworn law-enforcement role, including detective. Detectives work for municipal police departments, county sheriff's offices, state investigative bureaus, and federal agencies, and job titles include Detective, Criminal Investigator, and Homicide Investigator.
Why it reads this way
Criminal investigation combines real, sworn legal authority with judgment work no AI system can perform: a detective's power to interview suspects under caution, execute search warrants, and testify credibly about an investigation's chain of custody rests on individually-held sworn-officer status, reinforced by POST certification requirements in 37 states and D. C.
Real, current AI tools are already reshaping the desk-based side of investigation, predictive-policing and case-management platforms like Palantir Gotham and Mark43 already help triage cases and surface data connections, and gunshot-detection systems like SoundThinking already flag incidents faster than manual reporting. But every credible account of this technology is explicit that these tools augment a detective's data analysis rather than replace the interviewing, evidence-handling, and courtroom-testimony work that requires an accountable, sworn human.
BLS projects steady, about-average growth (3%) through 2034, reflecting stable demand for the sworn-officer role this position requires.
Skills this role draws on
We don't yet have task-by-task time-share data for this occupation, so we can't show which specific tasks carry the exposure score above. This is the real skill set instead.
Typical salary range (USD)
$50,670–$154,360
Average: $93,790/yr
Range source: BLS Occupational Employment and Wage Statistics / O*NET OnLine, 2025
Average source: O*NET OnLine 2025 wage data (Annual Median Wage) for Detectives and Criminal Investigators (33-3021.00); min/max from BLS OEWS 10th/90th percentile
Related careers
Head-to-head comparisons
Detective and Criminal Investigator scores 46/100, reflecting a real mix of automatable desk work and unautomatable sworn-officer work. The verdict rests on a genuine legal wall: detectives are sworn law-enforcement officers, not a separately licensed civilian role, and 37 states plus D.C. require POST certification for any sworn officer, a real, individually-held credential backing the authority to interview suspects, execute warrants, and testify in court. Real, current AI tools (Palantir Gotham, Mark43, SoundThinking gunshot detection) already help triage cases and analyze data, but every credible account keeps the actual investigative and courtroom work with the sworn officer. BLS projects steady, about-average growth (3%) through 2034.
This is a researched judgment (checklist v1.2), not a statistical measurement — it sits alongside, not instead of, the structural exposure signal above. Next scheduled review: 2027-02-19.
Data sources & methodology
Salary data: BLS Occupational Employment and Wage Statistics / O*NET OnLine, 2025. Min/max figures represent the 10th–90th percentile annual wage range across the United States. Average figure sourced separately: O*NET OnLine 2025 wage data (Annual Median Wage) for Detectives and Criminal Investigators (33-3021.00); min/max from BLS OEWS 10th/90th percentile.
Automation Risk Score: Based on O*NET occupational analysis (33-3021.00) evaluating task complexity, physical requirements, social intelligence, and environmental variability. Methodology based on research from Frey & Osborne (Oxford, 2017).
Growth projections: 3% (2024-2034, about average, per BLS Police and Detectives outlook; ~62,200 annual openings, mostly replacement need), based on BLS Occupational Outlook Handbook.