Tomik Tomik - 1 year ago 436
Javascript Question

Google Maps v3 - limit viewable area and zoom level

is it possible to limit Google map v3 to a certain area? I want to allow displaying only some area (e.g. a country) and disallow the user to slide elsewhere. Also I want to restrict the zoom level - e.g. only between levels 6 and 9. And I want to use all the base map types.

Is there any way to achieve this?

I had a partial success with limiting zoom level by using StyledMap, but I succeeded only with restricting ROADMAP, I wasn't able to limit zoom on other basic types this way.

Thanks for any help

Answer Source

You can listen to the dragend event, and if the map is dragged outside the allowed bounds, move it back inside. You can define your allowed bounds in a LatLngBounds object and then use the contains() method to check if the new lat/lng center is within the bounds.

You can also limit the zoom level very easily.

Consider the following example: Fiddle Demo

<!DOCTYPE html>
   <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> 
   <title>Google Maps JavaScript API v3 Example: Limit Panning and Zoom</title> 
   <script type="text/javascript" 
   <div id="map" style="width: 400px; height: 300px;"></div> 

   <script type="text/javascript"> 

   // This is the minimum zoom level that we'll allow
   var minZoomLevel = 5;

   var map = new google.maps.Map(document.getElementById('map'), {
      zoom: minZoomLevel,
      center: new google.maps.LatLng(38.50, -90.50),
      mapTypeId: google.maps.MapTypeId.ROADMAP

   // Bounds for North America
   var strictBounds = new google.maps.LatLngBounds(
     new google.maps.LatLng(28.70, -127.50), 
     new google.maps.LatLng(48.85, -55.90)

   // Listen for the dragend event
   google.maps.event.addListener(map, 'dragend', function() {
     if (strictBounds.contains(map.getCenter())) return;

     // We're out of bounds - Move the map back within the bounds

     var c = map.getCenter(),
         x = c.lng(),
         y =,
         maxX = strictBounds.getNorthEast().lng(),
         maxY = strictBounds.getNorthEast().lat(),
         minX = strictBounds.getSouthWest().lng(),
         minY = strictBounds.getSouthWest().lat();

     if (x < minX) x = minX;
     if (x > maxX) x = maxX;
     if (y < minY) y = minY;
     if (y > maxY) y = maxY;

     map.setCenter(new google.maps.LatLng(y, x));

   // Limit the zoom level
   google.maps.event.addListener(map, 'zoom_changed', function() {
     if (map.getZoom() < minZoomLevel) map.setZoom(minZoomLevel);


Screenshot from the above example. The user will not be able to drag further south or far east in this case:

Google Maps JavaScript API v3 Example: Force stop map dragging

Recommended from our users: Dynamic Network Monitoring from WhatsUp Gold from IPSwitch. Free Download