I’m working with the linked 1850-1880, 1860-1880, and 1870-1880 samples. When I look at a specific state/county/mcd sometimes there are different urban/rural classifications for the households living there in the same year. For example, the Barnstable, Mass. 1850 sample (year_1=1850; stateicp_1=3; county_1=10; mcd_1=200) classifies 3 people as urban and 3 as rural.
Am I missing a more finely defined geography that puts some people in the urban part of Barnstable and others in the rural? I checked incorporation codes and other geographic identifiers and nothing seems different about these 6 observations other than that 3 are classified “urban” and 3 “rural”. This doesn’t seem to be a coding error since I think it’s true of about 10% of the sample.