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Showing content from https://developers.google.com/maps/documentation/javascript/examples/geocoding-region-es below:

Region Code Biasing (ES) | Maps JavaScript API

Region Code Biasing (ES)

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This demonstrates sending a geocoding request for "Toledo" and receiving a result in Spain. The result returned depends on the region of the map. See also the demo for the US region.

Read the documentation.

TypeScript

function initMap(): void {
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 8,
    }
  );
  const geocoder = new google.maps.Geocoder();

  geocoder
    .geocode({ address: "Toledo" })
    .then((response) => {
      const position = response.results[0].geometry.location;

      map.setCenter(position);
      new google.maps.Marker({
        map,
        position,
      });
    })
    .catch((e) =>
      window.alert("Geocode was not successful for the following reason: " + e)
    );
}

declare global {
  interface Window {
    initMap: () => void;
  }
}
window.initMap = initMap;

Note: Read the guide on using TypeScript and Google Maps. JavaScript

function initMap() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 8,
  });
  const geocoder = new google.maps.Geocoder();

  geocoder
    .geocode({ address: "Toledo" })
    .then((response) => {
      const position = response.results[0].geometry.location;

      map.setCenter(position);
      new google.maps.Marker({
        map,
        position,
      });
    })
    .catch((e) =>
      window.alert("Geocode was not successful for the following reason: " + e),
    );
}

window.initMap = initMap;

Note: The JavaScript is compiled from the TypeScript snippet. CSS

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
#map {
  height: 100%;
}

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

HTML

<html>
  <head>
    <title>Geocoding Region - ES</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="map"></div>

    <!-- 
      The `defer` attribute causes the script to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises. See
      https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly&region=ES"
      defer
    ></script>
  </body>
</html>

Try Sample Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

  git clone -b sample-geocoding-region-es https://github.com/googlemaps/js-samples.git
  cd js-samples
  npm i
  npm start

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME.

  git checkout sample-SAMPLE_NAME
  npm i
  npm start

Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see the Google Developers Site Policies. Java is a registered trademark of Oracle and/or its affiliates.

Last updated 2025-07-09 UTC.

[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-07-09 UTC."],[[["This example demonstrates how to send a geocoding request for \"Toledo\" and receive a result focused on Spain using the `region` parameter."],["The returned result's location depends on the specified map region, showcasing how to bias results to a particular geographic area."],["It provides code samples in TypeScript, JavaScript, CSS, and HTML for implementing this functionality within a web page."],["Users can interact with the sample through provided links to JSFiddle and Google Cloud Shell, or clone and run it locally using Git and Node.js."]]],["The code initializes a Google Map and a geocoder. It sends a geocoding request for \"Toledo\" to the geocoder. Upon a successful response, the map's center is set to the location of \"Toledo\" in Spain, and a marker is placed there. If the geocode fails, an alert is displayed indicating the error. The map's region is defined as \"ES\", which represents Spain. The CSS file sets the height of the map element. The HTML file imports the CSS and JS files.\n"]]

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