What is the setting of Mr. and Mrs. Bo Jo Jones by Ann Head?

The setting is a modestly-sized city in the late 1960s America. The reader is not told where exactly the city is (Bo Jo attends the generic "State U"), which provides a sense that the subject (teen pregnancy) can happen anywhere and anytime and is not restricted to one locale. However, there is one hint that the state borders Georgia (the couple must cross the state line into Georgia to get married), so the reader can assume that the town is in the South, historically the most conservative region of the country.