Question

What was the population density of most of the land in nevada wyoming arizona and oklahoma in 1890?

Answer 1

Census.gov  reported  population density  for Arizona in 2007 at  57 people/square mile, Wyoming at 51.3.. Other records show 0-2 people/square mile including  Nevada and Oklahoma.   With that very minimal rates as reference,  we can conclude that there is  zero population density  in those 4 cities  in 1890.