View Boston Police Department public journal of crime statistics by date, including types of crimes.
View Boston city maps, including design and construction projects, building energy reporting, vision story map, and city department locations.
Search City of Boston crime map by date, type of crime and keyword.
Search City of Boston GIS map by parcel ID or address.
Search Chelsea property map by owner's name, parcel ID, street name, or street number.
View City of Chelsea GIS page, including parcels, zoning and wards.
View Winthrop Town Assessing Department tax maps list by map number including parcel numbers and scale information.
The National Spatial Data Infrastructure (NSDI) is a national repository and data portal for spatial data and mapping information. The Massachusetts GIS Maps Database includes a variety of mapping data sets, including GIS mapping data. The NSDI includes more than 4 million maps covering the entire United States.
The NSDI provides access to GIS mapping data for the general public, Federal, State, and local government entities, researchers, and developers. Massachusetts GIS Maps Database includes mapping data from Federal agencies such as the USGS, the Census Bureau, the Environmental Protection Agency, and the Bureau of Land Management; State mapping agencies, such as the Michigan Department of Transportation; and local governments, such as the cities of Detroit and Chicago.
Massachusetts GIS Maps Database also includes data sets from private companies and nonprofit organizations. These data sets include mapping data for businesses and industries, transportation networks, land use, and water resources.