PlugShare supports finding nearby stations. Make sure your locations services are enabled on your handheld device. Tap the filters icon on the righthand side of the map screen to pull up all of your filter options ( the filter icon is the one in the middle that looks like a funnel):

 

For finding locations around a destination, (in the app and on the website), you can search for a zip code, location name, city name etc. by tapping on the search icon at the top of the main map screen: