This would be more useful with detail on what share of the population lived in urban environments, as well as insight into what life was life for the share that didn’t.
We have the Domesday Book from the 11th century which was a complete survey of the entire country, and we have parish and monastic records, wills, town charters and tax accounts from later periods. Of course there are gaps and ambiguities but we’re far from blind about those times.