[Talk-us] USPS Address Database

Anthony osm at inbox.org
Wed Mar 2 20:53:06 GMT 2011

On Wed, Mar 2, 2011 at 3:47 PM, Anthony <osm at inbox.org> wrote:
> On Wed, Mar 2, 2011 at 2:23 PM, Brian Wilson <brian at wildsong.biz> wrote:
>> You'd be better off trying to get tax assessor data on a county by
>> county basis and then create centroids from the parcels.
> I've tried that, and it works great for individual residences.  But
> it's useless for apartments and businesses, because there's only one
> address per parcel.

On Wed, Mar 2, 2011 at 3:44 PM, Anthony <osm at inbox.org> wrote:
> My understanding is that
> the USPS maintains an extraordinarily up-to-date list of unique valid
> addresses.
> A copy of it would be extremely useful.

Point being, with the USPS "valid address database", when one parcel
has an address of 740 Evergreen Terrace, and the parcel next to it has
an address of 746 Evergreen Terrace, you'd know whether that means
that one of the parcels has multiple addresses, or just that for some
reason the USPS skipped a few numbers.

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