I have a list of zip codes that I need attach zone numbers to. I wish it were as easy as saying all zip codes from 00001-20000 = zone 1, 20001-40000 = zone 2...but they're all over the place.
So, I'd need to do something like zone = 1 if (000-003) or (588-595) or 770-778) or etc.
So I have one column that gives the zone number and another column that gives the first three digits of the zip code.
Any ideas?
Thanks
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