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Reverse Geocoding

  • This webpage provides a demonstration of reverse geocoding, converting geographical coordinates (latitude and longitude) into a human-readable address.

  • The provided code samples showcase the implementation of reverse geocoding using the Google Maps JavaScript API, with options in both JavaScript and TypeScript.

  • Users can input coordinates, which are then processed to display a marker on a map and an info window containing the corresponding address.

  • The sample code can be run locally by cloning the repository, installing dependencies, and starting the application using Node.js and Git.

This example demonstrates reverse geocoding of coordinates to addresses.

Read thedocumentation.

TypeScript

functioninitMap():void{constmap=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{zoom:8,center:{lat:40.731,lng:-73.997},});constgeocoder=newgoogle.maps.Geocoder();constinfowindow=newgoogle.maps.InfoWindow();(document.getElementById("submit")asHTMLElement).addEventListener("click",()=>{geocodeLatLng(geocoder,map,infowindow);});}functiongeocodeLatLng(geocoder:google.maps.Geocoder,map:google.maps.Map,infowindow:google.maps.InfoWindow){constinput=(document.getElementById("latlng")asHTMLInputElement).value;constlatlngStr=input.split(",",2);constlatlng={lat:parseFloat(latlngStr[0]),lng:parseFloat(latlngStr[1]),};geocoder.geocode({location:latlng}).then((response)=>{if(response.results[0]){map.setZoom(11);constmarker=newgoogle.maps.Marker({position:latlng,map:map,});infowindow.setContent(response.results[0].formatted_address);infowindow.open(map,marker);}else{window.alert("No results found");}}).catch((e)=>window.alert("Geocoder failed due to: "+e));}declareglobal{interfaceWindow{initMap:()=>void;}}window.initMap=initMap;
Note: Read theguide on using TypeScript and Google Maps.

JavaScript

functioninitMap(){constmap=newgoogle.maps.Map(document.getElementById("map"),{zoom:8,center:{lat:40.731,lng:-73.997},});constgeocoder=newgoogle.maps.Geocoder();constinfowindow=newgoogle.maps.InfoWindow();document.getElementById("submit").addEventListener("click",()=>{geocodeLatLng(geocoder,map,infowindow);});}functiongeocodeLatLng(geocoder,map,infowindow){constinput=document.getElementById("latlng").value;constlatlngStr=input.split(",",2);constlatlng={lat:parseFloat(latlngStr[0]),lng:parseFloat(latlngStr[1]),};geocoder.geocode({location:latlng}).then((response)=>{if(response.results[0]){map.setZoom(11);constmarker=newgoogle.maps.Marker({position:latlng,map:map,});infowindow.setContent(response.results[0].formatted_address);infowindow.open(map,marker);}else{window.alert("No results found");}}).catch((e)=>window.alert("Geocoder failed due to: "+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;}#floating-panel{position:absolute;top:10px;left:25%;z-index:5;background-color:#fff;padding:5px;border:1pxsolid#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:1pxsolid#999;}#latlng{width:225px;}

HTML

<html>  <head>    <title>Reverse Geocoding</title>    <link rel="stylesheet" type="text/css" href="./style.css" />    <script type="module" src="./index.js"></script>  </head>  <body>    <div>      <input type="text" value="40.714224,-73.961452" />      <input type="button" value="Reverse Geocode" />    </div>    <div></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"      defer    ></script>  </body></html>

Try Sample

Clone Sample

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

gitclone-bsample-geocoding-reversehttps://github.com/googlemaps/js-samples.gitcdjs-samplesnpminpmstart

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

gitcheckoutsample-SAMPLE_NAMEnpminpmstart

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

Last updated 2025-10-31 UTC.