Where can I get a list of US zip codes with geologists for latitude and longitude?

Question

See Where can I get a list of US zip codes with geographic and longitude geocodes? at http://gis.stackexchange.com .

We have a table in our database that has the geographic coordinates of latitude and longitude paired with US zip codes. Sample data is as follows:

Zip State Latitude Longitude 30000 GA 33.906553 -84.206311 30001 GA 33.810659 -84.607964 30002 GA 33.77429 -84.260712 30003 GA 33.906553 -84.206311 30004 GA 34.113832 -84.294578 30005 GA 34.079927 -84.221166 30006 GA 33.906553 -84.206311 30007 GA 33.968777 -84.43282 30008 GA 33.902022 -84.580318 30009 GA 33.906553 -84.206311 

The problem is that our data has not been updated for several years. Where can I get (free or for purchase) updated data for this table?

Answer 1

See http://www.boutell.com/zipcodes/

Answer 2

I believe you can find the zip code data from the 2000 US Census here .

"2000 Census Geographic Index Files for counties, county divisions (small divisions of civil divisions / census counties), place and zip code tabulation areas (ZCTA) for 50 states, the District of Columbia and Puerto Rico."