Dude, that's more than 5 years old.
On Jun 26, 2005, at 8:27 PM, Scott Gifford wrote:
Brian Dunning <[EMAIL PROTECTED]> writes:
You have to purchase a database. ZIP codes are not geographic, you
can't calculate lat/lon from them. Here is one source:
http://www.zipwise.com
As I said below, you can download a free database from the US Census
Bureau. Specifically, the data here:
http://www.census.gov/tiger/tms/gazetteer/zcta5.txt
contains ZIP codes and lat/lon information. I've not used that data,
but I've used this file from 1999 with good results:
http://www.census.gov/geo/www/tiger/zip1999.html
Apparently that will no longer be updated, though, so the ZCTA data is
probably better.
----ScottG.
[...]
On Jun 26, 2005, at 6:43 PM, Scott Gifford wrote:
[...]
In the U.S., you can use the census data:
http://www.census.gov/geo/www/gazetteer/places2k.html
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