I already have the information for US states and Counties. I have the information in the JSON files. I want the information for ALL US city and Zip Code information.

I can't really navigate the US consensus sites so if anyone has the information, I'd be really thankful.

  • I found this site where I had to pay for Zip codes for different regions. Other places I have found the info for major cities i.e 10 odd cities only. I am looking for the entire US.
  • 1
    Welcome to gis.SE. Questions like this are usually helped by showing some evidence of what research you've already done, and why existing Q&A (like gis.stackexchange.com/questions/35106/…) aren't applicable to your situation.
    – BradHards
    Nov 18 '13 at 7:12
  • @BradHards Well, the solutions proposed in the question as well the answer are older links and are not working currently.
    – Kraken
    Nov 18 '13 at 7:27
  • You could ask this on OpenData.stackexchange.com! Lots of folks there who may be able to help! Nov 18 '13 at 7:28
  • I do not know how good those pay sites are, but I have yet to find any free zip code layers that are not almost worthless. USPS will not give out that info, and with the Census if you find a layer they include a big disclaimer that basically states it is for reference only and it should not be trusted. The only way we were able to clear up the Zip layer for our county was to invite several of the local postmasters to our office and sit down with some maps. Only 2 came in. Together we moved some boundaries several miles then added or removed some zip codes that changed 5 to 10 years earlier.
    – Lemur
    Nov 18 '13 at 15:22

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.

  • 2
    ZCTA is going to be the best option for Zip Codes as an area. USPS does not compile zip codes as areas; they compile them as sets of delivery points. Nov 18 '13 at 17:42
  • 2
    I usually use ZCTAs instead of ZIP codes if I'm interested in assigning a ZIP to a particular location. Neither will be accurate (and you have to make sure everyone involved knows that!) because as blord-castillo said, ZIP codes are not areas with defined boundaries. You can have a huge office building and different floors can have different ZIP codes.
    – Dan C
    Nov 18 '13 at 17:57

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. Borders are not exactly defined all that well (I once learned that having mail boxes on opposite sides of the street could be two different zip codes).

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