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Bureau of Justice Statistics (BJS)
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Home  | Data Collection Detail

Data Collection: Law Enforcement Management and Administrative Statistics (LEMAS)
Status: Active
Frequency: 1987, 1990, 1993, 1997, 1999 (limited scope), 2000, 2003, 2007, 2013, 2016
Latest data available: 2016

Beginning in 2016, the Law Enforcement Management and Administrative Statistics (LEMAS) survey adopted a core and supplement structure. Conducted periodically since 1987, the LEMAS core collects data from over 3,000 general purpose, county, and local law enforcement agencies, including all those that employ 100 or more full-time sworn officers and a nationally representative sample of smaller agencies. Data are obtained on agency responsibilities, operating expenditures, job functions of sworn and civilian employees, officer salaries and special pay, demographic characteristics of officers, weapons and armor policies, education and training requirements, computers and information systems, vehicles, special units, and community policing activities. Due to the breadth of the survey, detailed analysis of any specific law enforcement topic cannot be done with the LEMAS core. The LEMAS supplements are designed to fill this void by allowing for a more comprehensive examination on a key topic in law enforcement and are administered between core years. The 2016 LEMAS Body-Worn Camera Supplement is the first supplement administered under the new structure.

On This Page

Data Experts

  • Shelley Hyland, PH.D., Statistician, BJS
  • Anthony Whyde, Statistician, BJS
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    Collection Period

    1987, 1990, 1993, 1997, 1999 (limited scope), 2000, 2003, 2007, 2013, 2016

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    Questionnaires

    Body-Worn Camera Supplement
    2018 PDF (246K)
    Law Enforcement Management and Administrative Statistics (CJ-38)
    2000 Short (52K) | 2000 PDF (91K) | 2000 Long (105K)
    Sample Survey of Law Enforcement Agencies (CJ-44)
    2016 PDF (310K) | 2013 PDF (331K) | 2007 Long PDF (709K) | 2007 Short PDF (560K) | 2007 PDF (174K) | 2003 PDF (350K) | 2003 Short (135K) | 2003 Long (197K) | 1999 PDF (89K) | 1999 PDF | 1997 Short (100K) | 1997 PDF | 1997 Long (150K) | 1993 Short (3.4M) | 1993 Long (766K) | 1990 Short (1M) | 1990 Long (2M) | 1987 Long (6M) | 1987 Short (187K)
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    Documentation

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    Methodology

    LEMAS Core

    The Law Enforcement Management and Administrative Statistics (LEMAS) survey collects data from a nationally representative sample of state, county, and local law enforcement agencies in the United States. For most questions, a reference date of June 30, 2016 was used.

    The 2016 LEMAS sample design called for the survey questionnaire to be sent to 3,499 general purpose state and local law enforcement agencies. The design called for all agencies employing 100 or sworn personnel to be included with certainty (self-representing), and for smaller agencies to be sampled from strata based on number of sworn officers and type of agency.

    A total of 27 local police departments were determined to be out-of-scope for the survey because they were special jurisdiction agencies, had closed, had outsourced their operations, or were operating on a part-time basis. The final mail out total of 3,472 agencies included 2,613 local police departments, 810 sheriffs' offices, and the 49 state agencies.

    A total of 2,780 agencies responded to the LEMAS questionnaire, for a response rate of 80%. The final database includes responses from 2,136 local police departments, 600 sheriffs' offices, and 49 state law enforcement agencies (including partial responses from 5 primary state police agencies). The overall response rate for local police departments was 82%, 74% for sheriffs' offices, and 90% for state law enforcement agencies.

     

    LEMAS Supplements

    In 2016, BJS administered the first LEMAS supplement on body-worn cameras (BWCs). The LEMAS Body-Worn Camera Supplement (LEMAS-BWCS) collected data from a nationally representative sample of about 5,000 general-purpose law enforcement agencies. The survey was administered to agencies regardless of whether they had BWCs and contained items for agencies with and without BWCs. The LEMAS-BWCS used the same sampling strategy as the LEMAS core but increased the sample size in order to power analysis for agencies with and without BWCs.

    A total of 87 agencies were found to be ineligible for the LEMAS-BWCS. The final sample size of 4,976 agencies included 3,707 local and county police departments, 1,220 sheriffs' offices, and all 49 primary state police agencies.

    A total of 3,928 agencies responded to the LEMAS-BWCS, for a response rate of 79%. The overall response rate for local police departments was 80%, 77% for sheriffs' offices, and 90% for primary state agencies.

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    Publications & Products

    The following publications and products were generated by BJS using data from this collection.

    Body-Worn Cameras in Law Enforcement Agencies, 2016 Presents data on body-worn camera (BWCs) use and non-use in general-purpose law enforcement agencies for 2016.
      Press Release | Summary (PDF 209K) | Full report (PDF 484K) | Data tables (Zip format 29K)


    Full-Time Employees in Law Enforcement Agencies, 1997-2016 Presents counts of full-time employees in general-purpose law enforcement agencies for 2016, with comparisons to prior years.
      Full report (PDF 325K) | Data tables (Zip format 7K)
    Part of the Law Enforcement Management and Administrative Statistics Series

    Police Vehicle Pursuits, 2012-2013 Presents data on police vehicle pursuits and pursuit-related policies, including the number of police vehicle pursuits conducted by general purpose state and local law enforcement agencies in 2012, and the types of written pursuit-related policies maintained by these agencies as of January 2013.
      Press Release | Summary (PDF 184K) | PDF (851K) | ASCII file (33KB) | Comma-delimited format (CSV) (Zip format 45K)
    Part of the Law Enforcement Management and Administrative Statistics Series

    Sheriffs' Office Personnel, 1993-2013 THE NUMBER OF FULL-TIME EMPLOYEES IN SHERIFFS' OFFICES INCREASED NEARLY 60 PERCENT FROM 1993 TO 2013
      Press Release
    Part of the Sheriffs' Office Series

    Sheriffs' Office Personnel, 1993-2013 Presents data on persons employed by the nation's sheriffs' offices on January 1, 2013, and employment trends since 1993.
      Press Release | Summary (PDF 233K) | PDF (801K) | ASCII file (28K) | Comma-delimited format (CSV) (Zip format 22K)
    Part of the Sheriffs' Office Series

    Local Police Departments, 2013: Equipment and Technology Presents findings on local police departments by population served in 2013, including comparisons with previous survey years.
      Press Release (8KB) | Summary (PDF 243KB) | PDF (640KB) | ASCII file (25KB) | Comma-delimited format (.csv) (Zip format 38KB)
    Part of the Local Police Departments Series

    Local Police Departments, 2013: Personnel, Policies, and Practices Presents findings on local police departments by population served in 2013, including comparisons with previous surveys dating back to 1987.
      Press Release | Executive Summary (PDF 85K) | PDF (751K) | ASCII file (36K) | Comma-delimited format (.csv) (Zip format 46K)
    Part of the Local Police Departments Series

    Sheriffs' Offices, 2007 - Statistical Tables Presents data collected from a nationally representative sample of sheriffs' offices on a variety of agency characteristics.
      PDF (706K) | ASCII file (16K) | Comma-delimited format (CSV) (Zip format 65K)
    Part of the Sheriffs' Office Series

    Local Police Departments, 2007 Presents data collected from a representative sample of local police departments nationwide on a variety of agency characteristics.
      PDF (580K) | ASCII file (28K) | Spreadsheet (Zip format 58K)
    Part of the Local Police Departments Series

    Gang Units in Large Local Law Enforcement Agencies, 2007 Presents data from the first nationwide study of specialized police units dedicated solely to addressing gang activity.
      Acrobat (PDF 378K) | ASCII file (20K) | Spreadsheet (Zip format 33K)


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    Related Topics

  • Law Enforcement
  • Law Enforcement | Local Police
  • Law Enforcement | Sheriffs' Offices
  • Law Enforcement | State Law Enforcement
  • Law Enforcement | Community Policing
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