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Reverse Geocoding

This example demonstrates reverse geocoding of coordinates to addresses.

Read the documentation.

TypeScript

function initMap(): void {
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 8,
      center: { lat: 40.731, lng: -73.997 }
    }
  );
  const geocoder = new google.maps.Geocoder();
  const infowindow = new google.maps.InfoWindow();

  (document.getElementById("submit") as HTMLElement).addEventListener(
    "click",
    () => {
      geocodeLatLng(geocoder, map, infowindow);
    }
  );
}

function geocodeLatLng(
  geocoder: google.maps.Geocoder,
  map: google.maps.Map,
  infowindow: google.maps.InfoWindow
) {
  const input = (document.getElementById("latlng") as HTMLInputElement).value;
  const latlngStr = input.split(",", 2);
  const latlng = {
    lat: parseFloat(latlngStr[0]),
    lng: parseFloat(latlngStr[1])
  };
  geocoder.geocode(
    { location: latlng },
    (
      results: google.maps.GeocoderResult[],
      status: google.maps.GeocoderStatus
    ) => {
      if (status === "OK") {
        if (results[0]) {
          map.setZoom(11);
          const marker = new google.maps.Marker({
            position: latlng,
            map: map
          });
          infowindow.setContent(results[0].formatted_address);
          infowindow.open(map, marker);
        } else {
          window.alert("No results found");
        }
      } else {
        window.alert("Geocoder failed due to: " + status);
      }
    }
  );
}

JavaScript

function initMap() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 8,
    center: { lat: 40.731, lng: -73.997 }
  });
  const geocoder = new google.maps.Geocoder();
  const infowindow = new google.maps.InfoWindow();
  document.getElementById("submit").addEventListener("click", () => {
    geocodeLatLng(geocoder, map, infowindow);
  });
}

function geocodeLatLng(geocoder, map, infowindow) {
  const input = document.getElementById("latlng").value;
  const latlngStr = input.split(",", 2);
  const latlng = {
    lat: parseFloat(latlngStr[0]),
    lng: parseFloat(latlngStr[1])
  };
  geocoder.geocode({ location: latlng }, (results, status) => {
    if (status === "OK") {
      if (results[0]) {
        map.setZoom(11);
        const marker = new google.maps.Marker({
          position: latlng,
          map: map
        });
        infowindow.setContent(results[0].formatted_address);
        infowindow.open(map, marker);
      } else {
        window.alert("No results found");
      }
    } else {
      window.alert("Geocoder failed due to: " + status);
    }
  });
}

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;
}

#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: "Roboto", "sans-serif";
  line-height: 30px;
  padding-left: 10px;
}

#floating-panel {
  position: absolute;
  top: 5px;
  left: 50%;
  margin-left: -180px;
  width: 350px;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
}

#latlng {
  width: 225px;
}

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Reverse Geocoding</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script src="./app.js"></script>
  </head>
  <body>
    <div id="floating-panel">
      <input id="latlng" type="text" value="40.714224,-73.961452" />
      <input id="submit" type="button" value="Reverse Geocode" />
    </div>
    <div id="map"></div>
  </body>
</html>

All

<!DOCTYPE html>
<html>
  <head>
    <title>Reverse Geocoding</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <style type="text/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;
      }

      #floating-panel {
        position: absolute;
        top: 10px;
        left: 25%;
        z-index: 5;
        background-color: #fff;
        padding: 5px;
        border: 1px solid #999;
        text-align: center;
        font-family: "Roboto", "sans-serif";
        line-height: 30px;
        padding-left: 10px;
      }

      #floating-panel {
        position: absolute;
        top: 5px;
        left: 50%;
        margin-left: -180px;
        width: 350px;
        z-index: 5;
        background-color: #fff;
        padding: 5px;
        border: 1px solid #999;
      }

      #latlng {
        width: 225px;
      }
    </style>
    <script>
      "use strict";

      function initMap() {
        const map = new google.maps.Map(document.getElementById("map"), {
          zoom: 8,
          center: {
            lat: 40.731,
            lng: -73.997
          }
        });
        const geocoder = new google.maps.Geocoder();
        const infowindow = new google.maps.InfoWindow();
        document.getElementById("submit").addEventListener("click", () => {
          geocodeLatLng(geocoder, map, infowindow);
        });
      }

      function geocodeLatLng(geocoder, map, infowindow) {
        const input = document.getElementById("latlng").value;
        const latlngStr = input.split(",", 2);
        const latlng = {
          lat: parseFloat(latlngStr[0]),
          lng: parseFloat(latlngStr[1])
        };
        geocoder.geocode(
          {
            location: latlng
          },
          (results, status) => {
            if (status === "OK") {
              if (results[0]) {
                map.setZoom(11);
                const marker = new google.maps.Marker({
                  position: latlng,
                  map: map
                });
                infowindow.setContent(results[0].formatted_address);
                infowindow.open(map, marker);
              } else {
                window.alert("No results found");
              }
            } else {
              window.alert("Geocoder failed due to: " + status);
            }
          }
        );
      }
    </script>
  </head>
  <body>
    <div id="floating-panel">
      <input id="latlng" type="text" value="40.714224,-73.961452" />
      <input id="submit" type="button" value="Reverse Geocode" />
    </div>
    <div id="map"></div>
  </body>
</html>
"use strict"; function initMap() { const map = new google.maps.Map(document.getElementById("map"), { zoom: 8, center: { lat: 40.731, lng: -73.997 } }); const geocoder = new google.maps.Geocoder(); const infowindow = new google.maps.InfoWindow(); document.getElementById("submit").addEventListener("click", () => { geocodeLatLng(geocoder, map, infowindow); }); } function geocodeLatLng(geocoder, map, infowindow) { const input = document.getElementById("latlng").value; const latlngStr = input.split(",", 2); const latlng = { lat: parseFloat(latlngStr[0]), lng: parseFloat(latlngStr[1]) }; geocoder.geocode( { location: latlng }, (results, status) => { if (status === "OK") { if (results[0]) { map.setZoom(11); const marker = new google.maps.Marker({ position: latlng, map: map }); infowindow.setContent(results[0].formatted_address); infowindow.open(map, marker); } else { window.alert("No results found"); } } else { window.alert("Geocoder failed due to: " + status); } } ); }
/* 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; } #floating-panel { position: absolute; top: 10px; left: 25%; z-index: 5; background-color: #fff; padding: 5px; border: 1px solid #999; text-align: center; font-family: "Roboto", "sans-serif"; line-height: 30px; padding-left: 10px; } #floating-panel { position: absolute; top: 5px; left: 50%; margin-left: -180px; width: 350px; z-index: 5; background-color: #fff; padding: 5px; border: 1px solid #999; } #latlng { width: 225px; }
<!DOCTYPE html> <html> <head> <title>Reverse Geocoding</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCb1xprYSpXd0q_yDsJ1W2UGhfl9_YGKU0&callback=initMap&libraries=&v=weekly" defer ></script> <!-- jsFiddle will insert css and js --> </head> <body> <div id="floating-panel"> <input id="latlng" type="text" value="40.714224,-73.961452" /> <input id="submit" type="button" value="Reverse Geocode" /> </div> <div id="map"></div> </body> </html>