I am seeking a data source for a statewide address point layer. I do not need resident or business information at these addresses; I just need the validated structured addresses (preferably with standardized elements) and the coordinate.
This is for an address suggestion application on clients without internet access. We could do server side queries to an internet service, but not client side. (So, for example, this is why we cannot use Google for queries.) We will be querying partial addresses to build suggestions, so generally geocode services will not work. Partial addresses will have a zip code.
Ideally though, we would obtain a database of address points, allowing a partioned table query server side against that database.
The main State we want is Missouri, followed by Illinois, but could go as high as a nationwide database. We have interest at this time in countries other than the United States.
Do not worry about budget issues on this. I need to gather information on available sources before working up a budget/RFP.
Best Answer
Navteq supply us with point addresses data for Australia, and supply the same for many other countries (US included).
It's not tremendously cheap, but is thorough, vetted, and updated quarterly.
They provide the data in several different formats, from shapemaps through to generic RDBM-format.
I understand Navteq get their data from the same guys that Google use for google maps.