Ask HN: How does Google maintain/update the information for the GeoCoding API?

[whatitdobooboo]

Or more specifically, If someone wanted to recreate this for NYC, how would they go about it?

[NetToolKit]

The good news is that you can do it for NYC using OpenAddresses data. We published two pieces about how to geocode more generally:

https://www.nettoolkit.com/geo/the-basics-of-geocoding https://www.nettoolkit.com/geo/adventures-in-address-parsing

It turns out that geocoding has been a much bigger project than we anticipated, but we offer the service very inexpensively. Let me know if you have any questions.