I am looking for the location of the town of Dietz, Wyoming that existed in 1895. A few of my ancestors were born in Dietz as the family traveled to Montana.

I would like to get vital records, but I'm not sure which county holds the records.

I have been told this town was in Sheridian county, however, I found a Dietz west of Casper in Natrona county.
Natrona county was already established by 1895 as was Sheridian county, so I am a bit confused.

Thanks for any help.