Even the 1940 US Census for rural areas in Ross County, Ohio, does not have easily identifiable locations. There were no street numbers then, just Rural Routes without box numbers. On the other hand, Columbus, Ohio, has street numbers and street names that can be located on DeLorme computer maps [wish they had not dropped the product], Bing, or Google.. However, the Interstate highway system in central Columbus has wiped out some of the old streets.
On the 1940 census, it is not obvious what route the census taker made for his/her rounds. I know a handful of houses where families lived, but that does not help for the residents in between.