Several years ago I was looking for ZIP Code polygons and learned the following:
* Census ZIP Code polygons are inaccurate. Check the Census Bureau documentation.
* The USPS does not maintain up to date ZIP Code boundaries.
* In rural areas, neighboring post offices often decide among themselves where the boundary is and don’t tell anyone about changes.
The best solution at the time was to buy a ZIP Code boundary file from a reputable vendor.
Orlando
PS. Check the source of the ESRI data. Just because it’s free doesn’t make it accurate.
From: Northeast Arc Users Group [mailto:[log in to unmask]]
On Behalf Of Olivares, Miriam
Sent: Wednesday, March 16, 2016 1:19 PM
To: [log in to unmask]
Subject: Re: Postal Zip Code Layer
Daniel,
Do you have access to Esri Data and Maps as part of your license (if your organization holds one)? I believe there are point and polygon zipcode data available
http://www.esri.com/data/data-maps
Miriam
-----
Miriam Olivares, GISP
GIS Librarian
Center for Science and Social Science Information
Yale University
219 Prospect Street | New Haven, CT 06511
Voicemail 203.436.5891 | [log in to unmask]
GIS LibGuide |
Get an appointment!
Let's work together to transform your project through the geospatial lens
Hi gang...
I have been tasked with finding a zip code layer specifically for the state of RI (yes we have more than one zip code) but I'll expand the range if thats whats available. Where might I ?look to find just such a thing??? Does the postal
service have such data available?
Daniel Bradley
GIS Coordinator
Warwick Fire Department
Lieutenant Engine Co 3
Station 3 - Oakland Beach
------------------------------------------------------------------------- This list (NEARC-L) is an unmoderated discussion list for all NEARC Users.
If you no longer wish to receive e-mail from this list, you can remove yourself by going to
https://urldefense.proofpoint.com/v2/url?u=http-3A__s.uconn.edu_nearcsubscribe&d=AwIFAw&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=bhblLezUALewsVbFIqDuVnM2TN8YMu5_WQW8JTconw8&m=-E4HW30H39SFNpQpZ2pHltspSwcGm28lFRuFdS7chBw&s=iCGufSBbdgVlrQd4qs4dRkCfm2XXxv6m7uzeoOK3L0s&e=
.
------------------------------------------------------------------------- This list (NEARC-L) is an unmoderated discussion list for all NEARC Users.
If you no longer wish to receive e-mail from this list, you can remove yourself by going to
http://s.uconn.edu/nearcsubscribe.
If you no longer wish to receive e-mail from this list, you can remove yourself by going to http://s.uconn.edu/nearcsubscribe.