According to the first national census held in 1920,most of the estimated 200,000 "small(i.e,low-class) salaried men" in Tokyo lived and worked in two difference places, commuting regularly from the suburbs to the city center. Table IV shows that these workers tended to live together in special districts defined type type of occupation and that a very high proportion, between 60 and 90 percent, continue to depend upon rented housing.