Our data were obtained from two sources: U.S. Census
data for Boulder, Colorado, for 2000 and 2010, and health
department records from the Boulder County Health
Department during that decade. In 2010, Boulder’s population
was estimated to be 118,400, distributed among
five ZIP codes. At the time of this data collection in 2010,
a total of 496 restaurants were inspected by the Boulder
County Health Department in the five ZIP codes in
question.