For multiple cities I don't know but San Francisco has some neighborhood polygons available. The SF neighborhoods according to the city planning department are at http://gispub02.sfgov.org/website/sfshare/catalog/planning_neighborhoods.zip. I think there is another one from SF realtors association but it is different. I mention these because you mentioned SoMa. From what I remember seeing of the Flickr neighborhood data it was fairly similar if not as "clean." The neighborhood lines didn't always run along streets the way the official dataset does. Other cities might have something similar.
Cheers, Greg On Fri, 2010-09-24 at 16:57 -0700, Tom Longson (nym) wrote: >> > Does anyone know where to get neighborhood data (as opposed to city / >> county)? >> > >> > Ideally names like "SoMa" and "Gourmet Ghetto" with a polygon for >> boundary. >> > > Flickr used geotagged photos to generate shapefiles that include > neighborhoods, and released the data into the public domain: > > http://code.flickr.com/blog/2008/10/30/the-shape-of-alpha/ > > The data is quite valuable but definitely is not perfect - depending on > your needs, you may need to curate it. > > As another option, Urban Mapping offers a fairly rich neighborhood-oriented > webservice API on a fee-per-query model. As such you won't get the polygons > from it; for that you'll need to a direct licensing agreement (not sure what > their pricing is on that but under low to moderate query volume the API > would be more cost efficient.) See > http://www.urbanmapping.com/products/urbanware/neighborhoods/ > > So you have the Zillow shapes, Flickr shapes, and Urban Mapping's API as > the main options as far as I'm aware, each with various pros/cons. I'd be > curious to hear more about your intended use case. > > Anyone know if the OSM folks are thinking at all about neighborhoods? > > -Josh W > blockchalk.com > _______________________________________________ > Geowanking mailing list > [email protected] > http://geowanking.org/mailman/listinfo/geowanking_geowanking.org > > > > _______________________________________________ > Geowanking mailing list > [email protected] > http://geowanking.org/mailman/listinfo/geowanking_geowanking.org > >
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