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When I was working at FEMA, we were trying to get language data from the US Census to overlay onto the Emergency Management GIS applications.  FEMA Teams would go into areas unknowing what languages folks spoke, which, of course, caused problems.

Emergency Management GIS:  Language Map

Language Mapper from US Census

Well, last week the Census just released a new mapping application that maps languages spoken and it is awesome.  The mapping data randomly places a dot for every 75 people (or so) that speaks a language you select, providing a geographic representation of where different languages are spoken in your community.  It’s best used to understand the distribution of language spoken at a county level, good stuff to include in your Emergency Management GIS operations.  Understanding actual counts is more problematic unless you use a geography of a county or greater. Continue Reading