William Frey, a demographer with the University of Michigan Population Studies Center believes that the 300 millionth American will be conceived this month somewhere in the suburban South or West.

• 密歇根大学人口研究中心的人口统计学家威廉·弗雷认为第3亿个美国人将出生在南部或西部的城郊；这一新生命将在本月孕育出来.