A5 is a geospatial index that partitions the world into pentagonal cells. The cells are available at 31 resolution levels, from a handful covering the whole world down to less than 30mm² (github.com)

submitted 3 weeks ago by cm0002@lemdro.id to c/programming@programming.dev

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[-] refalo@programming.dev 4 points 3 weeks ago* (last edited 3 weeks ago)

They actually do move... cities/towns/place names expand and contract, and incorporate and unincorporate all the time... it's a huge pain in the ass for our system at work. Some place names are also 100% made up by the USPS and only used by them, and guess what, you still gotta support it. Even the professional paid databases don't contain every possible place name people use.

And my comment was more about geocoding of exact addresses, not whole cities.

this post was submitted on 19 Oct 2026

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