Embodiments disclosed herein provide systems and methods for carrier frequency assignment based on transmit power differentials. In a particular embodiment, a method comprises determining first power levels of first carrier frequencies transmitted from a first wireless network base station and determining second power levels of second carrier frequencies transmitted from a second wireless network base station. The method further comprises determining transmit power differentials between the first power levels and the second power levels for corresponding ones of the first and second carrier frequencies. The method further comprises assigning a wireless communication device to one of the first carrier frequencies based on the transmit power differentials.