There are several reasons why a digital ad may be shown to someone who lives outside the targeted geographic area.
Firstly, the user's IP address may be registered in a different location than their physical location, which can result in the ad being served to them even if they are outside the targeted area.
Secondly, the user may have recently traveled to the targeted area, and their browser or device may still be registering that location. Google Ads location targeting uses the "Presence: People in or regularly in your targeted locations" rule. For example, if somebody lives in Vancouver and travels to Seattle for a few days, they can still see ads that are targeting Vancouver because they were usually located in that area.
Thirdly, the ad targeting parameters may not be set up correctly, resulting in the ad being shown to a wider audience than intended. Please double-check the original proposal to see if there was a mistake when inputting the location targeting, and send adsupport@socastdigital.com a note if you need to make updates.
Fourth, Our map view is unclear sometimes. For example, you may see a postal code or zip code outside the targeted area but it should be within the targeted area, the map is just showing in correct location data.
Lastly, the ad network or platform may have limited inventory in the targeted area, and may be showing the ad to users outside the area in order to reach a larger audience.