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How to Become a Criminal Investigator: The Roadmap to Dream Career

February 07, 2023 · 6 min read

Criminal investigators are typically police officers, detectives, or special agents who are responsible for investigating crimes and gathering evidence. Some agencies may require a certain level of education or experience in law enforcementcriminal justice, or a related field. Additionally, candidates for criminal investigator positions may have to pass a physical fitness test, written exam, and/or background check. However, the specific requirements for becoming a criminal investigator can vary depending on the jurisdiction and type of agency.

To become a criminal investigator, you generally need to follow these steps:

  1. Meet the minimum qualifications: Most agencies require criminal investigators to be at least 21 years old, have a high school diploma or equivalent, and be U.S. citizens. Some agencies may also require a bachelor's degree in criminal justice, law enforcement, or a related field.
  2. Gain law enforcement experience: Many criminal investigator positions require prior experience as a police officer, deputy sheriff, or other law enforcement official. This experience can demonstrate your knowledge of law enforcement procedures and practices.
  3. Pass a written exam: Many agencies require candidates to pass a written examination to assess their knowledge of law enforcement practices, criminal procedures, and other relevant topics.
  4. Pass a physical fitness test: Many agencies require criminal investigators to be physically fit and able to perform physically demanding tasks. You may be required to pass a physical fitness test to demonstrate your abilities.
  5. Pass a background check: Most agencies conduct a thorough background check on candidates to ensure they have a clean criminal record and are suitable for a law enforcement position.
  6. Complete training: If you are hired, you will typically be required to complete a training program, which may include classroom instruction, on-the-job training, and firearms training.

The specific requirements for becoming a criminal investigator can vary depending on the jurisdiction and type of agency. It's best to check with the agency you're interested in working for to determine their specific requirements.


To become a criminal investigator, you may consider obtaining a bachelor's degree in criminal justice, law enforcement, or a related field from an accredited college or university. Some common degrees for criminal investigators include:

  1. Bachelor's degree in Criminal Justice: This degree program provides a comprehensive understanding of the criminal justice system, law enforcement procedures, and criminology.
  2. Bachelor's degree in Law Enforcement: This degree program focuses specifically on law enforcement procedures and practices, and may include courses in criminal investigations, criminal law, and policing.
  3. Bachelor's degree in Forensic Science: This degree program focuses on the scientific aspects of criminal investigations and may include courses in crime scene analysis, forensic psychology, and fingerprint analysis.

You can also find online degree programs in criminal justice, law enforcement, or forensic science, which allow you to complete your studies from the comfort of your own home.

While a bachelor's degree is not always required for criminal investigator positions, it can help increase your chances of being hired and may provide you with a broader understanding of the criminal justice system and the skills needed for criminal investigations.


The length of time it takes to become a criminal investigator can vary depending on a number of factors, including:

  1. Level of education: If you choose to pursue a bachelor's degree in criminal justice, law enforcement, or a related field, it typically takes four years of full-time study to complete.
  2. Work experience: If you have prior law enforcement experience, it may shorten the time it takes to become a criminal investigator, as many agencies require or prefer previous experience for this position.
  3. Training: Most agencies require criminal investigators to complete a training program, which can last anywhere from several weeks to several months. The length of the training program depends on the agency and the position's specific requirements.

In general, it can take anywhere from a few months to several years to become a criminal investigator, depending on your level of education and experience, and the specific requirements of the agency you are interested in working for. It's best to check with the agency you're interested in working for to determine the specific requirements and time frame for becoming a criminal investigator.


To be successful as a criminal investigator, you will need a combination of technical skills, interpersonal skills, and personal qualities, including:

  1. Technical skills: Knowledge of criminal investigation techniques and procedures, as well as experience with forensic technology and equipment.
  2. Analytical skills: The ability to collect, analyze and interpret data and evidence to solve crimes.
  3. Communication skills: Excellent written and verbal communication skills to gather information from witnesses and suspects and to prepare detailed reports.
  4. Interpersonal skills: Ability to establish rapport with a variety of people and work effectively with other law enforcement agencies and departments.
  5. Problem-solving skills: The ability to identify, analyze and solve complex problems and make sound decisions.
  6. Physical fitness: The ability to physically perform the duties of a criminal investigator, including running, climbing, and engaging in potentially hazardous situations.
  7. Attention to detail: A meticulous attention to detail to ensure that no piece of evidence is overlooked or misinterpreted.
  8. Ethics and integrity: High standards of ethics and integrity to maintain public trust and confidence in the criminal justice system.
  9. Adaptability: The ability to work in a fast-paced, constantly changing environment and adjust to new circumstances and challenges.
  10. Emotional stability: The ability to maintain composure and remain level-headed in high-stress and potentially dangerous situations.

Becoming a criminal investigator can be a challenging and competitive process, but it is also a rewarding career for those who are well-suited for the role. Here are some of the factors that may make it difficult to become a criminal investigator:

  1. Stiff competition: There may be many qualified candidates applying for a limited number of positions, making it a competitive process.
  2. Stringent requirements: Most agencies have strict requirements for criminal investigators, including minimum age, education, and work experience, which can be challenging to meet.
  3. Extensive background check: Most agencies conduct a thorough background check, including a review of your criminal record, financial history, and personal references, which can be a challenging process.
  4. Physical fitness test: Many agencies require criminal investigators to pass a physical fitness test, which can be difficult for some individuals.
  5. Intense training: Criminal investigators must complete extensive training, which can be physically and mentally demanding.

However, for those who are dedicated and have the right combination of technical skills, interpersonal skills, and personal qualities, becoming a criminal investigator can be a fulfilling and rewarding career. The best way to determine if this is the right career for you is to research the requirements and talk to individuals who work in this field.

by Olena Sobolieva

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