Links of the Week: Which county is that in?

Once in a while, you need to know which county a city is in (for example, because you need to call the county sheriff on a crime story), or conversely, which cities are in a particular county. One sometimes-handy tool for this is a Google maps mashup at ( also has a host of other useful data mapping tools: telephone area code boundaries, zip code boundaries, city boundaries, geocoders and reverse-geocoders) The only shortcoming to’s county boundaries is that you must either already know the zip code of the county you’re looking for, or click in precisely the right location on a map of the U.S.

Another, often easier way to find your county is to use the somewhat under-loved map site MapQuest. Google Maps may have eaten a large portion of MapQuest’s lunch (along with breakfast and most of dinner), but MapQuest is still the only web map service I know of that shows county boundaries on all their maps at certain levels of magnification. If you don’t see the county lines, try zooming in one level at a time until they appear.


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