Census of State and Local Law Enforcement Agencies (CSLLEA), 2018

The BJS Census of State and Local Law Enforcement Agencies (CSLLEA) is conducted every 4 years to provide a complete enumeration of agencies and their employees. Employment data are reported by agencies for sworn and nonsworn (civilian) personnel and, within these categories, by full-time or part-time status. The pay period that included June 30, 2018, was the reference date for personnel data. Agencies also complete a checklist of functions they regularly perform, or have primary responsibility for, within the following areas: patrol and response, criminal investigation, traffic and vehicle-related functions, detention-related functions, court-related functions, forensic services, special public safety functions (e.g., animal control), task force participation, and specialized functions (e.g., search and rescue). The CSLLEA provides national data on the number of state and local law enforcement agencies and employees for local police departments, sheriffs' offices, state law enforcement agencies, and special jurisdiction agencies. It also serves as the sampling frame for BJS surveys of law enforcement agencies.

国家司法统计局（BJS）每四年进行一次州和地方执法机构（CSLLEA）普查，旨在全面统计各执法机构和其员工情况。执法机构需上报宣誓和非宣誓（平民）人员的就业数据，并在这些类别中按全职或兼职状态进行细分。以2018年6月30日为参考日期的支付周期包含了人员数据。执法机构还需完成一份清单，列出他们在以下领域内定期执行或承担主要责任的职能：巡逻与响应、刑事侦查、交通与车辆相关职能、拘留相关职能、法庭相关职能、法医服务、特殊公共安全职能（例如，动物控制）、任务小组参与以及特殊职能（例如，搜救）。CSLLEA为国家层面提供了关于州和地方执法机构以及员工数量的数据，包括地方警察局、郡治安官办公室、州执法机构和特殊管辖机构。同时，它也作为BJS对执法机构调查的抽样框架。