Frequently asked questions

Q: Why are the latitude and longitude values different from some of your competitor's values?

A: One first needs to understand that a latitude/longitude coordinate pair defines a precise point on the earth. However, in the real word, ZIP Codes are regions -- irregularly shaped regions at that -- and cannot be defined accurately by a single point.

The situation is much like expecting North Dakota to have a single latitude/longitude coordinate. North Dakota isn't a point on the earth. It is a region -- an area. Regions can't have a single latitude/longitude value. If you do find North Dakota represented by a single latitude/longitude pair in some database, it is someone's attempt to judge what they believe to be the center of North Dakota. The same holds true of ZIP Codes. ZIP Codes are regions. ZIP Codes are areas, not a pin stuck in a map . Consequently, it is up to the eye of the beholder (or in this case, the company compiling the data) to choose what they think is a representative latitude/longitude value for the ZIP Code in question.

Here's an example. Look below at image representing ZIP Code 60634. The lime green colored region is the actual area representing 60634. Place your finger on the screen at a point representing 60634. See the problem? You could place your finger anywhere within the lime green area and be correct. You can therefore see why you will find variations from one company to another in respect to the latitude/longitude value they use to represent a ZIP Code.

If you have any additional questions, please contact us.

ZIPCode, ZIP, Mr. ZIP, Mister ZIP, Zippy, Mr. Zippy, database, files, software, import, excel, spreadsheet, access, usa, postal, post office, mailing, shipping, latitude, longitude, coordinates, distance, city, cities, state, preferred, usps

ZIP Code files, latitude, longitude, 5 digit, Zone improvement plan, history, coordinates, distance, city, cities, state, preferred, usps

Copyright 2001 by Inc.

Related pages

levittown pennsylvania zip codethree bridges nj zip codecollingdale pa zip codezip code 08402savage zipoquossoc maine zip codezip code 18078manoa zip codephiladelphia area code and zip codezip code cliftonmillstone zip coderichmond in zip codewollaston post office phone numberabsecon zip code njspotswood zip codezip code bernardsville njusps dedhamprides crossing ma zip code01902 area codezips pasadena mdforestville ct zip codezip code leonardtown mdzip code of arlingtonzip code 08558edgartown ma zip codemarin zip codeburlington zip code mastevenson md 21153wantage nj zip codearundel maine zipsouth wellfleet zip codepownal vermont zip codedryden area codelivermore zip codeskillingworth ct ziplivermore zipzip code westbrook ctzip code 18447northfield ma zip codezip code alexandria vatelephone code 01803westtown pa zip codecharlotte vermont zip codezip code 21040zip code 01803vernon vt zip codezip code dariensomers connecticut zip codecraigs pennsylvaniacharlotte amalie st thomas zip codefredricksburg area codezip code cabo rojowildwood new jersey zip codecountry code 00601stannard vermontzip code for quantico vaparkville zip codeusps hoboken njsykesville md zipcodelaconia new hampshire zip codezip code 17011newington zip code nhwatsonville area code23223 zip codehershey zipconcord ma zipcheltenham zip codezip 18702zip 03820spokane zipcodesashaway ri zip codecolts neck new jersey zip codecolumbia md zip codes