Go to Google Earth. Type the address you want to know about into the "Fly to" field.  Google Earth will go to that location.  Put your pointer on the point indicated. The Latitude and Longitude will be displayed at the bottom of the screen. In this case,  206 W Chester St In Lafayette, CO is at 39 deg 59 min  42.00 sec North, 105 deg 5 min 32.78 sec West.