Hello, we are looking for a source of inexpensive data which will give
us a list of addresses in the United States, and their respective
latitudes and longitudes. For example, for 123 Main St. in Peoria,
Kansas, the longitude would be 86.3321, the latitude would be 35.235.

There are other services which do this on a per-address basis, for
example, maporama.com, and another on a per-location basis,
www.lat-long.com. However, the problem with both sites is that you
cannot export the information, it is on a one by one basis. Anyway, we
are not interested in locations per se, just street addresses.

There are some sources which provide this information, such as
SelectPhone by Infousa, but the problem is that you cannot export
their data for some of their products, or, if you want to export their
data, you have to spend an exorbitant amount of money to do that,
money we do not have.

So, right now, we're coming up dry in finding an inexpensive database
(even though it seems that this would be public domain information).
Can you help?

Thanks a lot, please feel free to post a question for clarification if you'd like.

P.S. Incidentally, by inexpensive, we mean that the entire database
would cost less than $200 to export and/or acquire.

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Request for Question Clarification by mathtalk-ga on 23 Jan 2005 11:16 PST

Hi, drive2learn-ga:

Would a table of latitudes and longitudes keyed by zipcode be satisfactory?

regards, mathtalk-ga

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Request for Question Clarification by pafalafa-ga on 23 Jan 2005 13:16 PST

drive2learn-ga,

Interesting question!  The Census Bureau maintains a Master Address
File that contains a lot of the info you're after, especially after
it's integrated with its TIGER database.  Thing is, though, these are
HUGE files, containing records covering well over 100 million distinct
addresses in the US.  This isn't the sort of thing readily managed on
a desktop PC.

Can you tell us a bit more about your capacity to handle such a large
dataset.  This may help in identifying a source you can work with.

Thanks.

pafalafa-ga

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Clarification of Question by drive2learn-ga on 24 Jan 2005 03:50 PST

To clarify:

Mathtalk: Well, we need for each street address, eg. 123 Main St, 4320
Peachtree Rd, etc.  Now, if there is a list of all addresses within a
zip code, with this key, and we can get for all zip codes, and it was
cheap, this would be ok.

Pafalafa: Our PC is 3.4 ghz, 2gb ram, SCSI HD . . . should be adequate.