“Data-Driven Energy and Population Estimation for Real-Time City-Wide Energy Footprinting” has been accepted as a conference paper to the 6th ACM International Conference on Systems for Energy-Efficient Buildings, Cities, and Transportation (BuildSys 2019). CityEnergy is a follow up to the award winning ePrints project, and expands it to the city scale. This work will be presented at BuildSys 2019 in New York City.