Location based wagering method sand systems. An online wagering service can be invoked via a mobile device. A determination can then be made regarding the location of the mobile device and a jurisdiction (e.g., state, county, city, etc.) associated with that location. The mobile device and hence a user can be authorized to access the online wagering service based on the location of the mobile device. Based on the location, it can also be determined if use of the online wagering service is allowed in the jurisdiction along with prescribed limitations of use in that jurisdiction. Wagering options are then presented via the mobile device, which conform to the laws and/or regulations of the jurisdiction.