Methods, apparatus, systems and articles of manufacture are disclosed to associate geographic locations with user devices. An example apparatus includes means for classifying a network that connects a user device to an audience measurement entity based on source identifying information transmitted from the user device, means for determining a geographic location associated with an impression indicated by media identifying information, and means for classifying the geographic location of the user device as a home location based on a timestamp associated with the impression, the timestamp retrieved from a database of user profiles.