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    • This is a Non-Federal dataset covered by different Terms of Use than Data.gov.

    Police Data: Computer Aided Dispatch (CAD)

    Metadata Updated: March 22, 2026

    This data set encompasses calls for service from 2017 to present from the City of Somerville's Computer Aided Dispatch (CAD) system. It excludes routine or administrative tasks (like vehicle refueling), community engagement efforts, and other non-call-related activities.

    Certain sensitive incidents, such as potential homicides or those requiring investigative follow-up, are omitted. Additionally, some incidents deemed sensitive statutorily or by SPD are included in the data set but stripped of temporal or geographic information in order to protect the privacy of victims.

    This data set is refreshed daily with data appearing with a one-month delay (e.g. CAD calls for service from 1/1 will appear on 2/1). If a daily update does not refresh, please email data@somervillema.gov.

    Access & Use Information

    Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than Data.gov. License: See this page for license information.

    Downloads & Resources

    Dates

    Metadata Created Date May 10, 2024
    Metadata Updated Date March 22, 2026

    Metadata Source

    Harvested from somervillema json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date May 10, 2024
    Metadata Updated Date March 22, 2026
    Publisher data.somervillema.gov
    Maintainer
    Identifier https://data.somervillema.gov/api/views/mdb2-mgc7
    Data First Published 2024-09-10
    Data Last Modified 2026-03-21
    Category Public Safety
    Public Access Level public
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.somervillema.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Harvest Object Id cd4ce9b5-7aac-44f1-84ba-4890bd4e311f
    Harvest Source Id ded7e0b2-febc-49bb-af4c-ee572aa34770
    Harvest Source Title somervillema json
    Homepage URL https://data.somervillema.gov/d/mdb2-mgc7
    License http://opendatacommons.org/licenses/odbl/1.0/
    Source Datajson Identifier True
    Source Hash 6a1fb012318bb42b90efd507434571def79faa2e9e2a735aec787dda53cba9cc
    Source Schema Version 1.1

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