What is an 1811 Special Agent?

If you’ve been researching careers in federal law enforcement, you’ve likely seen the term “1811.” But what exactly does it mean?

In the federal hiring system, jobs are categorized by series codes set by the Office of Personnel Management (OPM). The number 1811 is the official designation for Criminal Investigators (Special Agents). These professionals investigate violations of federal law, gather and analyze evidence, interview witnesses and suspects, execute search and arrest warrants, and prepare cases for prosecution.

An 1811’s work depends on their agency’s mission, but core responsibilities often include:

• Conducting complex criminal investigations into violations of federal statutes

• Gathering physical, documentary, and digital evidence

• Interviewing victims, witnesses, and suspects

• Coordinating with other federal, state, and local law enforcement agencies

• Preparing detailed investigative reports

• Executing search and arrest warrants

• Testifying in federal court as a fact or expert witness

1811s may specialize in areas such as counterterrorism, cybercrime, narcotics trafficking, public corruption, human trafficking, or financial fraud. The job demands a mix of investigative skill, legal knowledge, and the ability to operate effectively under pressure.

Special Agents in the 1811 series serve in many different agencies, each with its own mission and jurisdiction. Examples include:

• Federal Bureau of Investigation (FBI)

• U.S. Secret Service (USSS)

• Homeland Security Investigations (HSI)

• Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF)

• Drug Enforcement Administration (DEA)

• U.S. Postal Inspection Service (USPIS)

• U.S. Army Criminal Investigation Division (CID)

• Naval Criminal Investigative Service (NCIS)

• Various Offices of Inspector General (OIGs)

Applicants generally must:

• Meet age, citizenship, and background requirements

• Pass a thorough background investigation and medical exam

• Complete agency-specific training at the Federal Law Enforcement Training Centers (FLETC) or Academies

• Demonstrate investigative, analytical, and communication skills

1811 work can involve irregular hours, frequent travel, and high-stakes decision-making. Yet it is also one of the most impactful careers in public service—directly protecting communities, enforcing federal law, and ensuring accountability.