Katie has been given to about 241,784 people in the United States since 1880. It was most common in 1986, which makes it a Gen X and millennial name.
Katie ranks 646th among American girls in 2025, with 447 born that year. Its best year was 1986, when 8,371 babies were given the name, ranking 38th. The typical living American called Katie is about 37 years old today. It is relatively most common in Mississippi, where it accounts for 0.05% 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.