Over the past 110 years, 38 745 boys have been named Brock. The name Brock ranks 518th in the United States among the most common names for boys. For the first time more than ten times newborns were named Brock in 1947. The peak of popularity of the name Brock came in the 1990s and 2000s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.