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Set up JavaScript AccessThis example auto-fills the city and state after a zip code is entered.
<script type="text/javascript">//<![CDATA[
$(function() {
// IMPORTANT: Fill in your client key
var clientKey = "js-9qZHzu2Flc59Eq5rx10JdKERovBlJp3TQ3ApyC4TOa3tA8U7aVRnFwf41RpLgtE7";
var cache = {};
var container = $("#example1");
var errorDiv = container.find("div.text-error");
/** Handle successful response */
function handleResp(data)
{
// Check for error
if (data.error_msg)
errorDiv.text(data.error_msg);
else if ("city" in data)
{
// Set city and state
container.find("input[name='city']").val(data.city);
container.find("input[name='state']").val(data.state);
}
}
// Set up event handlers
container.find("input[name='zipcode']").on("keyup change", function() {
// Get zip code
var zipcode = $(this).val().substring(0, 5);
if (zipcode.length == 5 && /^[0-9]+$/.test(zipcode))
{
// Clear error
errorDiv.empty();
// Check cache
if (zipcode in cache)
{
handleResp(cache[zipcode]);
}
else
{
// Build url
var url = "https://www.zipcodeapi.com/rest/"+clientKey+"/info.json/" + zipcode + "/radians";
// Make AJAX request
$.ajax({
"url": url,
"dataType": "json"
}).done(function(data) {
handleResp(data);
// Store in cache
cache[zipcode] = data;
}).fail(function(data) {
if (data.responseText && (json = $.parseJSON(data.responseText)))
{
// Store in cache
cache[zipcode] = json;
// Check for error
if (json.error_msg)
errorDiv.text(json.error_msg);
}
else
errorDiv.text('Request failed.');
});
}
}
}).trigger("change");
});
//]]></script>
This example determines the distance between two zip code that are entered.
<script type="text/javascript">//<![CDATA[
$(function() {
// IMPORTANT: Fill in your client key
var clientKey = "js-9qZHzu2Flc59Eq5rx10JdKERovBlJp3TQ3ApyC4TOa3tA8U7aVRnFwf41RpLgtE7";
var cache = {};
var container = $("#example2");
var errorDiv = container.find("div.text-error");
/** Handle successful response */
function handleResp(data)
{
// Check for error
if (data.error_msg)
errorDiv.text(data.error_msg);
else if ("distance" in data)
{
// Show div
container.find("div.distance").show()
// Set distance
.find("span.distance").text(data.distance + " miles");
}
}
// Set up event handlers
container.find("input[name='zipcode1'],input[name='zipcode2']").on("keyup change", function() {
// Get zip code
var zipcode1 = $("input[name='zipcode1']").val().substring(0, 5);
var zipcode2 = $("input[name='zipcode2']").val().substring(0, 5);
if (zipcode1.length == 5 && /^[0-9]+$/.test(zipcode1) && zipcode2.length == 5 && /^[0-9]+$/.test(zipcode2))
{
// Clear error
errorDiv.empty();
// Check cache
var cacheKey = zipcode1 + '-' + zipcode2;
if (cacheKey in cache)
{
handleResp(cache[cacheKey]);
}
else
{
// Build url
var url = "https://www.zipcodeapi.com/rest/"+clientKey+"/distance.json/" + zipcode1 + "/" + zipcode2 + "/mile";
// Make AJAX request
$.ajax({
"url": url,
"dataType": "json"
}).done(function(data) {
handleResp(data);
// Store in cache
cache[cacheKey] = data;
}).fail(function(data) {
if (data.responseText && (json = $.parseJSON(data.responseText)))
{
// Store in cache
cache[cacheKey] = json;
// Check for error
if (json.error_msg)
errorDiv.text(json.error_msg);
}
else
errorDiv.text('Request failed.');
});
}
}
}).trigger("change");
});
//]]></script>
Use of this API is subject to our Terms of Use. You must register your application to use the API. It's simple and 100% free for up to 50 requests per hour. You can view our Usage Plans for information on usage above 50 requests/hr.
To prevent abuse, the API key on this page is periodically regenerated. If your request failed with an error message indicating that the API key is not found, please reload the page and try again. We also will intentionally return incorrect values for this demo if our system detects abuse.
Error codes are returned via the HTTP response code.
| Status Code | Reason |
|---|---|
| 400 | The request format was not correct. |
| 401 | The API key was not found, was not activated, or has been disabled. |
| 404 | A zip code you provided was not found. |
| 429 | The usage limit for your application has been exceeded for the hour time period. |