About targeting geographic locations
Target your ads to people in – or who've shown interest in – geographic locations relevant to where you do business. You can select whether you’d like your ad to appear for someone’s physical location, locations of interest, or both. Location targeting can help you make sure that your ads are relevant to the people who see them – which can help boost your campaign's value.
The Google Ads system uses a number of factors to determine someone's physical location and whether to show your ad. When possible, we determine physical location based on someone's computer or mobile device location, or other methods.
- IP address:
Location is typically based on the Internet Protocol (IP) address, which is a unique number assigned by Internet Service Providers to each computer connected to the Internet.
If a device is connected to a Wi-Fi network, we may detect the Wi-Fi network's IP address to determine physical location. If a mobile device is connected to a mobile carrier's proxy server, we may use the carrier IP to determine the device's location.
- Device location:
Depending on a user's location settings, we may be able to use a precise location for advertising, based on one of these sources of location data:
- GPS: Accuracy varies depending on GPS signal and connection.
- Wi-Fi: Accuracy should be similar to the access range of a typical Wi-Fi router.
- Bluetooth: If Bluetooth and/or Bluetooth scanning are enabled on a device, a publicly broadcast Bluetooth signal can provide an accurate indication of location.
- Google's cell ID (mobile phone tower) location database: Used in the absence of Wi-Fi or GPS. Accuracy is dependent on how many mobile phone towers are located within an area and available data; some devices don't support cell ID location.
If the Google Ads system detects geographic areas that someone is interested in, we may show appropriate ads targeted to that area or surrounding areas (known as 'location of interest').
Some of the ways that we might detect a location of interest are based on:
- Terms used in searches that indicate a location.
- Past searches that indicated a location of interest.
- A person’s past physical locations.
- The content and context of a website where an ad is displayed. Keep in mind that the mention of a location on a page doesn't always indicate an interest in that location.
- Searches on Google Maps or Google Maps for mobile.
- If someone sets a custom location for Google search results.
On the Google Display Network, we may infer a location associated with a page or site when we believe it will be useful for targeting your ads. A location mentioned on a page may not always indicate interest in that location. For example, someone who is reading news about Melbourne isn’t necessarily interested in ads for Melbourne florists. Similarly, we might infer an interest in a location, even if that location isn't specifically mentioned on a page but the context of the entire site indicates an interest in that place.
Location of interest isn't restricted to a person's country or the Google search domain that the person is searching on. For example, if someone in Paris, France searches for Sydney taxi on google.fr (France), we'll still identify Sydney as a location that they're interested in.
Advanced location options
The default advanced location option in Google Ads will use both physical location or location of interest to determine where ads can appear. You can update your advanced location options at any time.
When you target an area, we may also show your ad to customers in nearby, closely related areas that normally couldn't be targeted because of low population, insufficient data about the geographic area, or because that level of targeting isn't available. For example, if you target the city of Melbourne, we may also show your ads to people in nearby suburbs of Melbourne.