Zip code radius finder database

It must be run locally on your computer. Follow these easy steps to make your application work easily: Demo Version Download the Demo Application from the link above. Be sure to note where the file was downloaded to. Extract all of the files to a location such as your desktop. Start doing your searches. It cost twenty-five cents to send a letter miles — not much less than it costs today to send a letter anywhere in the country, and in considerably less time! Today, many of us in the United States expect to have our mail delivered to our homes and offices at no extra charge.

Before July 1, , city residents had to pay to have a postal worker bring their mail to them; rural customers had to travel to pick up their own mail for another 30 years.

Zip codes wouldn't have helped much in those days. Many famous Americans have been postal workers. Harry S. Truman was postmaster of Grandview, Missouri for a time. Perhaps the most romantic era in our United States postal history is that of the Pony Express. Before then, stagecoaches took more than 20 days to deliver mail from coast to coast.

In , William H. The first 3 digits of a ZIP code determine the central mail processing facility, also called sectional center facility or "sec center", that is used to process and sort mail. All mail with the same first 3 digits is first delivered to the same sec center where it is sorted according to the last 2 digits and distributed to local post offices. The sec centers are not open to the public and usually do most sorting overnight.

As you can see from the map of the first 3 digits of zip codes , the digits after the first are also generally assigned from east to west. In the map, 0 is closer to white and 9 is much more vivid.

It's easy to follow the gradient across each of the zones even though there are a few exceptions such as the southwest tip of Georgia which uses 39XXX like central Mississippi. Despite the fact that ZIP codes seem to be geographic in nature, that wasn't their intended purpose. They are intended to group mail to allow the USPS to deliver mail more efficiently. Some ZIP codes will span multiple states in order to make mail routing and delivery more efficient.

In most cases, addresses in close proximity to each other are grouped in the same ZIP code which gives the appearance that ZIP codes are defined by a clear geographic boundary.

However, some ZIP codes have nothing to do with geogaphic areas. When ZIP codes appear to be geographically grouped, a clear shape cannot always be drawn around the ZIP code because ZIP codes are only assigned to a point of delivery and not the spaces between delivery points. In areas without a regular postal route or no mail delivery, ZIP codes may not be defined or have unclear boundaries. ZIP Markers? US County Borders?

Exclude PO Boxes? Input a radius to search within in KM or miles. Click on the map or type in an address or ZIP code on the centre of your search. After a delay, the results will appear inside the radius. If you hover over a marker, you will see its ZIP code. There is a limit to the radius because excessive results can take a long time to load and some web browsers struggle to load them all. By davkat on 28th December Sorry, thats not possible on this page.

By Free Map Tools on 20th December They have a separate license and we not able to work inside the city limits On 7th December John, you could run two searches and subtract the smaller from the larger radius.