Students also figure into the next demographic variable
we considered, which is family and non-family groups in
the vicinity. True to form, the census data for ZIP code
80302, with its low restaurant failure rate, show the highest
percentage of non-household families (62.14%). Given this
area’s restaurant success rate, we conclude that non-household
families (unrelated individuals living together, such as
roommates) are a contributing factor to the success of restaurants
in Boulder. At the same time, ZIP code 80304, with
the highest failure rate (29.27%), had the lowest percentage
(32.63%) of renters and concomitantly the highest percentage
of homeowners (67.37%).