Here is a neat article I found on lifehacker that provides the solution using a one liner.

The always helpful Tech-Recipes has come up with an ingenius way to find latitude and longitude values for any location using Google Maps.

You'll first need to look up an address (duh), but this trick only works if the address is centered (it's centered by default). So, moving the map around will not make this work. When the address you want to find latitude and longitude for is dead center, copy and paste this code into your browser bar:

You'll get a popup with the coordinates. How cool is that, I ask you! — Wendy Boswell