Thank you for posting your question on History Hub.
For information on families in a certain area, you may wish to consult the Census records. For more information on viewing digitized versions of the census, depending on the years you are seeking, please see the website https://www.archives.gov/research/genealogy/census/online-resources. You can also contact the National Archives at DC, which is the custodian of Census records, for more information on reviewing and ordering Census records.
We hope this information is helpful.
The National Archives and Records Administration