National Neighborhood Data Archive (NaNDA): Law Enforcement Organizations by Census Tract, United States, 2003-2017

Principal Investigator(s): View help for Principal Investigator(s) Michael Esposito, University of Michigan. Institute for Social Research; Mao Li, University of Michigan. Institute for Social Research; Jessica Finlay, University of Michigan. Institute for Social Research; Iris Gomez-Lopez, University of Michigan. Institute for Social Research; Anam Khan, University of Michigan. Institute for Social Research; Philippa Clarke, University of Michigan. Institute for Social Research; Megan Chenoweth, University of Michigan Institute for Social Research

Version: View help for Version V3

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NaNDA_Law_Enforcement_Orgs_by_Census_Tract_2003-2017_v1-0.pdf	application/pdf	333.2 KB	10/20/2020 10:18:AM
nanda_lawenf0317T_01P.sas7bdat	application/x-sas-data	489.2 MB	10/20/2020 08:36:AM
nanda_lawenf_tract_2003-2017_01P.dta	application/x-stata	258 MB	10/20/2020 10:19:AM
nanda_lawenf_tract_2003-2017_01P_csv_with_readme.zip	application/zip	20.5 MB	10/20/2020 08:34:AM

Project Citation:

Esposito, Michael, Li, Mao, Finlay, Jessica, Gomez-Lopez, Iris, Khan, Anam, Clarke, Philippa, and Chenoweth, Megan. National Neighborhood Data Archive (NaNDA): Law Enforcement Organizations by Census Tract, United States, 2003-2017. Ann Arbor, MI: Inter-university Consortium for Political and Social Research [distributor], 2020-10-20. https://doi.org/10.3886/E115973V3

Project Description

Summary: This dataset contains measures of the number and per capita density of law enforcement and safety organizations—such as police and fire departments, courts, jails, and lawyers—per United States census tract from 2003 through 2017.

Funding Sources: United States Department of Health and Human Services. Administration for Community Living. National Institute on Disability, Independent Living, and Rehabilitation Research (90RTHF0001); United States Department of Health and Human Services. National Institutes of Health. National Institute on Aging (RF1-AG-057540)

Scope of Project

Subject Terms: police departments; fire departments; courts; jails; lawyers; law enforcement agencies; public safety

Geographic Coverage: United States

Time Period(s): 2003 – 2017 (2003-2015, 2017)

Collection Date(s): 2020 – 2020

Universe: Law enforcement organizations in all census tracts in the United States, including Puerto Rico and the US Virgin Islands.

Data Type(s): aggregate data

Methodology

Data Source:

The 2017 North American Industry Classification System (NAICS, https://www.census.gov/cgi-bin/sssd/naics/naicsrch?chart=2017) was used to identify law enforcement organizations.
Establishment data was taken from the 2017 National Establishment Time Series (NETS) database.
Establishment census tracts, as well as land area per tract, were determined using the 2010 version of the US TIGER/Line shapefiles (https://www2.census.gov/geo/tiger/TIGER2010/TRACT/2010/tl_2010_us_tract10.zip).
Census tract population figures for 2000-2010 are drawn from the NaNDA dataset Neighborhood Socioeconomic and Demographic Characteristics of Census Tracts, United States, 2000-2010 (https://www.openicpsr.org/openicpsr/project/111107/).
Population figures for 2011-2017 were obtained from the NaNDA dataset Socioeconomic Status and Demographic Characteristics of Census Tracts, United States, 2008-2017 (https://www.openicpsr.org/openicpsr/project/119451/).

Unit(s) of Observation: census tract, year

Geographic Unit: census tract

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