For its May 2012 Central District analysis, the Philadelphia City Planning Commission defined Poplar as census tracts 131 and 132. The report's 2010 housing snapshot counted 1,810 housing units: 1,645 occupied and 165 vacant. Those figures are a dated baseline, not a claim about Poplar's current population or housing inventory.
The 2012 planning record reports residential land in all three district density categories: 34% medium density, 15% high density, and 11% low density. The record separately locates two-to-four-unit apartment houses and semi-detached homes in Poplar; its other housing examples describe the districtwide categories rather than proving each form on a Poplar block.