From the start, Fox News reports that Bolt reaches a speed of 28 mph. Bolt covered the course from a standing start at 23.35 miles per hour. However, he dashed from the 60m to the 80m mark in 1.61 seconds, approximately 27.79 mph. If he could maintain that speed over the whole 100m, with a flying start, he would record a time of 8.05 seconds.
The phone number (888) 817-2153 is indeed a telephone number for the U.S. Census Bureau of the U.S. Department of Commerce. The number will reach one of their telephone facilities in Hagerstown, MD, Jeffersonville, IN, or Tucson, AZ.
The U.S. Census Bureau is not the primary source for data on births and deaths. The primary source is the National Center for Health Statistics (NCHS). NCHS can provide information on number of births, percent unmarried mothers, number of deaths, infant mortality and more. Contact NCHS: 1-800-232-4636 or nchsquery@cdc.gov.