[Talk-us] CDPs and admin_level

[Anthony]

On Mon, Oct 12, 2009 at 9:06 AM, Greg Troxel <gdt at ir.bbn.com> wrote:
> Why is CDP different from UPS delivery zone, or zip code, or any other
> division by some other entity?

Well, it's different because it's defined geographically, as a
polygon, whereas UPS delivery zones and zip codes are defined as a set
of addresses, which may or may not even be geographical (think APO
addresses), and quite often don't map into a polygon.  But I'm not
saying that should matter.