Example methods and apparatus to identify wireless subscriber activity status are disclosed. A disclosed example method includes identifying a market of interest associated with wireless services, and creating a list of telephone numbers (TNs) from the identified market of interest. The example method also includes initializing each TN in the list of TNs as dormant, monitoring each TN in the list of TNs during a monitoring duration for an indication of activity, and when the indication of activity is received, associating one of the TNs in the list of TNs with an active status.