[vlucas]

I made the website http://devdata.io for this exact reason. You can get an array/list/object of US state names and abbreviations (and lots of other datasets) in any language supported (currently JavaScript, PHP, Python, Ruby, C#, and Lua).

[ashmud]

Suggestions, based on what we also have/use.

Datasets: Languages (human), SMS Carriers

Language: SQL