![]() I am adamant that the “central city” in any non-bureaucratic sense is not defined by weird municipal boundaries, and if density is a valid metric it provides some confirmation. First, looking at density is one way to judge what the core of the city of “Boston” is. There are a few things I take away from the density map. The densest blocks of all seem to be in the most central Boston neighborhoods, South Boston, some of Cambridge, the aforementioned Comm Ave corridor in Allston/Brighton, Chelsea, and most solidly East Boston. The patterns here aren’t surprising and seem to correspond quite well to the built-up areas you’d see in an aerial image. Here also is a standard but detailed map of population density in the Greater Boston area, classified so as to highlight variations in the highest-density areas. Might it shock those people worried about the “Manhattanization” of Boston that much of quaint old Beacon Hill is in one way already Manhattanized? Only a few blocks have Manhattan-level density, most of them of course in and around Boston they’re in the most central neighborhoods and in college areas (Harvard, Northeastern, and along Comm Ave in Allston/Brighton). (we are the third most populous country in the world, but we are pretty huge) nearer the high end is the average density of Somerville (the most densely populated city in New England and one of the densest in the country) and at the extreme is the average density of Manhattan. At the low end is the average density of the U.S. As usual, click these for larger versions.įirst, we thought it would be fun (okay, not fun in the usual sense, but in the nerd sense) to compare population density in Massachusetts to some averages in the above series of maps. They’re all based on Census blocks, which in urban areas more or less correspond to actual city blocks. There’s nothing novel about population density maps, but I can’t recall seeing many density maps based on new Census data, and it may be interesting to examine local patterns in some detail, so here are some maps based on the 2010 Census ( data here). It is of course very dense compared to most places in this country among cities over 100,000 in population Boston ranks seventh in population density (Cambridge is fifth), and among the fifty states Massachusetts is the third most densely populated. Other Populated Areas are all Census Designated Places/Incorporated Places that lie outside of the boundaries of Census Urbanized Areas.One of the things that quickly struck me-and that, I think, becomes apparent to most newcomers and visitors-after moving to the Boston area is how small it is for a “big city” in the United States. The resultant data layer represents "Other Populated Areas". Census Urbanized Areas (High Population Areas) were erased from the CDP/Incorporated Places data layer using the Esri ArcGIS ERASE command. Other Populated Areas are derived from the Census Designated Places (CDP)/Incorporated Places data layer. Urbanized Clusters within the Census Urban Areas data layer were not included in the High Population Areas data layer. Within the Urban Areas data layer, features defined as Urbanized Areas were extracted to become the "High Population Areas" data layer. High Population Areas are derived from the Census Urban Areas data layer. The Census 2010 TIGER files were downloaded from the Census website ( High Population Areas Bureau of the Census 2010 TIGER database. The High Population Areas and Other Populated Areas data layers are derived from the U.S. Version: 5 (Derived from 2020 Census / 2022 TIGER/Line Geodatabase) For Version 2 of the data, a PDF map is available for download. XML file within the downloadable Esri Shapefile or as an independent link. Other Populated Areas are all CDP/Incorporated Places that lie outside of the boundaries of Census Urban Areas containing 50,000 or more people with a population density of at least 1,000 people per square mile.ĭepending on the version, the metadata is included as an. The resultant data layer represents the "Other Populated Areas" data layer. Were erased from the CDP/Incorporated Places data layer using the Esri ArcGIS ERASE command. Census Urban Areas (High Population Areas) Which was downloaded from the Census website. ![]() Census Bureau's TIGER Designated Places (CDP)/Incorporated Places data layer, The Other Populated Areas (OPA) data is derived from the U.S. Open PDF files with Adobe Acrobat Reader.ĭownload HPA V2 as Shapefile (ZIP) Download HPA V2 as ArcInfo Export (ZIP) Download HPA V2 PDF Map (ZIP) Open HPA V2 Metadata Other Populated Areas (OPA) Data Esri shapefiles can be used with numerous GIS applications. Installation: ArcInfo Export files can be imported into Esri ArcGIS using the To Coverage option within the Conversion Tools Toolbox.
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