This graph is a combination of a flattened 3D surface of US Map with state divisions and 3D bars representing the city population, the bars are placed on the location of each city on the map.
From Origin 2018, special point is supported in 3D XYZ bar graph. Press Ctrl + click on a bar, then propertitis of the speical point can be set in the Plot Details dialog.
To know how to plot this graph, please download this project file (Zip file). There is a Note window to show the detail steps for plotting this graph.