This report presents statistics, by city blocks, on characteristics enumerated in the Census of Housing, taken as of April 1, 1960. The housing unit is the reporting unit for this report.

Statistics by blocks are published for each city or urban place which had a population of 50,000 or more in 1950 or in an interim census prior to 1960, and also had a population of 50,000 or more in 1960. In addition, a number of localities were included in the city block program through an agreement whereby the local government furnished satisfactory block maps and paid the Bureau of the Census for the incremental cost of collecting and publishing the information. Reports differing only in details are issued for the cities in Puerto Rico.

The information presented in this report represents a modification of the block statistics programs of the 1950 and 1940 Censuses of Housing. The 1960 program provides the following information for each block: total population, the number of housing units classified by condition and plumbing, tenure of occupied units, average value and average number of rooms for owner occupied units, average contract rent and average number of rooms for renter-occupied units, number of units occupied by nonwhites, and number of units with 1.01 or more persons per room.