Erwin has been given to about 21,262 people in the United States since 1880. It was most common in 1922, which makes it a interwar name.
Its best year was 1922, when 513 babies were given the name, ranking 249th. The typical living American called Erwin is about 62 years old today. It is relatively most common in Massachusetts, where it accounts for 0.01% 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.