US Census
NY Population Change 1970 to 2022
2020 County Population Dot Density
Texas County Population
The Rich Men North of Richmond (Median Household Income)
I'd say they probably live in either Fairfax County VA or Bethesda CDP, MD.
For those playing along at home, here is the code for making this map up and interpolating the missing data: https://github.com/AndyArthur/r_maps_and_graphs/blob/main/Richmen North of Richmond Map.R
Albany Population Density
From the 2020 Census data, block level data.