New answers tagged geography
Envelopes and the geography type are almost always a bad mixture, since they are not comparable (i.e., Cartesian vs spherical). Your results are probably expected if you see them on a round globe. With the smaller envelope, I see Sumatra: But, with the larger envelope, it goes through the South Pacific: If you need to select features within a ...
Maybe: http://www.arcgis.com/home/item.html?id=8d2012a2016e484dafaac0451f9aea24 But as others have pointed out, free zip code data is not exactly accurate (and I really don't have first hand experience with pay data). Large businesses (such as universities) and large post offices will most likely be off if they have their own zip code associated with them. ...
If Zip Code Tabulated Areas (http://www.census.gov/geo/reference/zctas.html, http://en.wikipedia.org/wiki/ZIP_Code_Tabulation_Area) will do, ftp://ftp2.census.gov/geo/tiger/TIGER2013/ZCTA5/tl_2013_us_zcta510.zip These are not exactly US zip codes though, but are probably what you want.
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