To cite the package 'uscenpops' in publications use:

Healy K (2020). uscenpops: US Census Counts. R package version 0.1.0, http://kjhealy.github.io/uscenpops.

Corresponding BibTeX entry:

  @Manual{uscenpops,
    title = {uscenpops: US Census Counts},
    date = {2020},
    author = {Kieran Healy},
    year = {2020},
    note = {R package version 0.1.0},
    url = {http://kjhealy.github.io/uscenpops},
  }