Find the closest mosque to you by using Google Maps to search for nearby mosques. Enter your current address into the Google Maps search bar, and execute the search. Choose the search nearby option, and then enter "mosque" into the search field to display the mosques nearest to you.
Directories such as WhitePages.com also offer the telephone number and the addresses to any mosques in your area for free. Various iOS and Android applications exist for this purpose as well including the Nearest Masjid app on the Google Play store and Mosques Locator on the iTunes App Store. The website FindMyMasjed.com is an online tool that can find the nearest mosque based on your geographic or given location and display the results on a map.