I’m trying to construct a dataset that has %urban from 1850-2010, by county. All decennial years are available on nhgis, with the exception of 1960. I found “Percentage Rural Non-Farm Population” exists in 1960, but I don’t believe this is giving me what I need - really what I want is # of urban persons in each county. I found this dataset for Iowa Urban Percentage of the Population for Counties, Historical | Iowa Community Indicators Program and discovered that the “Percentage Rural Non-Farm Population” dataset from nhgis does not match the 1960 values for Iowa counties, which reaffirms my concern.
Any ideas as to where I can get this data? Clearly the Iowa data is coming from somewhere - I checked the census bureau website and couldnt find their source dataset.