Police Car Routes are areas which patrol cars are dispatched. In Cambridge there are many route cars and cruisers have one officer in each car. This is different from Sector cars which have 2 officers per car. This layer is used for response by Cambridge Public Safety.

Police Sectors are areas which patrol cars are dispatched. In Cambridge there are 5 sector cars and each cruiser has two officers in each car. This is different from route cars which only have 1 officer per car. This layer is used for response by Cambridge Public Safety. Police Sectors are areas which police cars are dispatched using the computer aided dispatch (CAD) software.

This polygon layer contains the six elective districts for state legislators who represent Cambridge in the Massachusetts House of Representatives. This layer was created for general use by the Cambridge Election Commission and for public distribution. Cambridge wards and precincts can be overlaid on district boundaries to designate which voters fall into each district.

For more information and download links see:
http://www.cambridgema.gov/gis/gisdatadictionary/elections/elections_staterepdistricts.aspx

This layer contains five polygons representing the city's Neighborhood Conservation Districts (NCDs). Conservation districts are groups of buildings and their surroundings that are architecturally and historically distinctive. Exterior changes to buildings within NCDs are subject to review by NCD commissions made up of residents appointed by the City Manager. The GIS data layer was created in 2000 from paper documents. Cambridge designated its first NCD in 1984, following City Council legislation the year before allowing NCD establishment.

For more information and download links see:
http://www.cambridgema.gov/GIS/gisdatadictionary/Historical/HISTORICAL_NhoodConservationDist.aspx

This point layer contains the eight fire stations within the City of Cambridge. Created for internal use by the Cambridge Emergency Communications Department, for general map-making purposes, and for public distribution.

For more information and download links see:
http://www.cambridgema.gov/gis/gisdatadictionary/public_safety/publicsafety_firestations.aspx

This layer contains point features of miscellaneous municipal buildings. This category is broader than just 'City Offices' as it includes sites such as the VFW hall, Senior Center, and DPW garages. Created for general use by City staff. Used for both mapping and specific identification of buildings with a similar use.

For more information and download links see:
http://www.cambridgema.gov/gis/gisdatadictionary/landmark/landmark_municipalbuildings.aspx

This layer contains polygons representing individual properties, usually a single parcel or building. The GIS data layer was created from paper documents. The Historical_LandmarksEasements layer contains individual parcels and buildings that are designated by the City Council as Cambridge Landmarks or that are protected by way of a voluntary donation of a preservation easement (aka preservation restriction) by a property owner to the City’s Historical Commission. Changes to the layer come about a few times a year as new landmarks and easements are so designated.

For more information and download links see:
http://www.cambridgema.gov/gis/gisdatadictionary/historical/historical_landmarkseasements.aspx

This layer contains point features of Youth Centers in Cambridge. Created for general use by City staff. Used for both mapping and specific identification of buildings with a similar use.

For more information and download links see:
http://www.cambridgema.gov/GIS/gisdatadictionary/Landmark/LANDMARK_YouthCenters.aspx

This layer contains two polygons representing the city's Historic Districts, Fort Washington Historic District and Old Cambridge Historic District. Historic Districts are groups of buildings, structures, and their surroundings that are architecturally and historically distinctive. Exterior changes to buildings within Historic Districts are subject to review by the Historical Commission made up of residents appointed by the City Manager.

For more information and download links see:
http://www.cambridgema.gov/GIS/gisdatadictionary/Historical/HISTORICAL_HistoricDistricts.aspx

Police Walking Routes are areas which officers patrol by foot. There are 37 different walking routes in Cambridge. This layer is used for response by Cambridge Public Safety.