A monitoring system for a parking space includes a number of radio frequency identification (RFID) tags, a monitor, a data transceiver, and a data center. The monitor corresponds to one of the parking spaces and is positioned in the parking space. When the monitor identifies an RFID tag within the parking space, the monitor records an occupied state of the parking space. When the monitor identifies the RFID tag is no longer within the parking space, the monitor records a vacant state of the parking space. The data center communicates with the monitors using the data transceiver, and stores the vacant state and/or the occupied state of the parking space.