Enrollment in degree-granting institutions of higher education in Arizona as a percentage of the state’s population was about equal to the national average in 2003. The Arizona figure was higher than the national average at private for-profit institutions, slightly greater than the national average at public institutions, but considerably below average at private not-for-profit institutions. Total revenues and expenditures per student at Arizona institutions of higher education were far below the national averages in 2003, among the least in the nation. Among public institutions, Arizona’s higher education revenues and expenditures were not as far below average, but still ranked among the bottom 10 states in the nation.

Unlike the rest of the Phoenix metropolitan area, population density in central Phoenix dropped during the 1970s and 1980s. The primary cause was a decrease in the number of housing units. Rising vacancy rates contributed, but the increase in vacancy rates was similar to that of the entire metropolitan area. Between 1990 and 1995, population density rose in central Phoenix. A sharp decline in vacancy rates was a major factor in the turnaround, though the vacancy rate decline only matched that of the entire metro area. Another major factor in the increase in density was the rising number of people residing in prisons, homeless shelters, or on the streets.