2020 Census Allocation to 2010 Census Tracts

The methodology selected by DRU was to use building footprints and residential parcels at the 2020 Census block level to allocate population and housing units. The conversion methodology employs a four-step process that uses dasymetric interpolation as the basis for the allocation calculations.

The four steps consisted of: 1. Blocks containing residential parcels and intersecting building footprints were allocated to the tracts that the combined shapes intersected (67 percent - 351,313 blocks) then, 2. Blocks containing residential parcels, but no building footprints, were allocated to the tracts that the parcel shapes intersected (2 percent - 11,299 blocks); then, 3.