When was UNIVAC I installed at the U.S. Census Bureau?
A contract for UNIVAC I was signed on March 31, 1951, and a dedication ceremony for the new computer was held in June of that year.

A Census Bureau employee using a Hollerith tabulator in 1908 (above) would have been able to compete with UNIVAC I's processing
speed 43 years later.
Photo courtesy of the Library of Congress