Troy Hughes presented a cool approach to BASUG (Boston Area SAS Users Group) a couple months ago. It uses PROC FCMP to create a SAS function that runs a Python function that uses the Google Maps API to get the answer. It's a bit more work to set up than Zdeb's 2010 approach. But the benefit is you get back data, rather than free text you need to parse.
Recording of the webinar: https://www.basug.org/videos?wix-vod-video-id=7ba7f8b4c7b948ac8108b15f0ca8675e&wix-vod-comp-id=comp-...
Slides: https://www.basug.org/_files/ugd/6fce8c_1b7a6abc29b74fe0937e154db349f05c.pdf
Paper: https://www.basug.org/_files/ugd/6fce8c_ff95f43425e04153a63c25757a3ef03b.pdf
Mike Raithel presented a neat approach that is I think more similar to Mike Zdeb's.
Recording: https://www.basug.org/videos?wix-vod-video-id=4ffd50aeee284b1ca2a7c3ef5a91790e&wix-vod-comp-id=comp-...
Paper: https://www.basug.org/_files/ugd/6fce8c_964ee9ecca2d4def95d523ccef5b9465.pdf
And of course you can always search lexjansen.com for more user group papers.