Peter has been given to about 591,531 people in the United States since 1880. It was most common in 1957, which makes it a midcentury name.
Peter ranks 187th among American boys in 2025, with 1,954 born that year. Its best year was 1957, when 11,628 babies were given the name, ranking 37th. The typical living American called Peter is about 58 years old today. It is relatively most common in District of Columbia, where it accounts for 0.35% of births.
Source: US Social Security Administration, national and state name files, 2025 release, and the Office for National Statistics for England and Wales. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.