Mckay has been given to about 2,665 people in the United States since 1880. It was most common in 1995, which makes it a Gen X and millennial name.
Its best year was 1995, when 111 babies were given the name, ranking 1184th. The typical living American called Mckay is about 22 years old today. It is relatively most common in Utah, where it accounts for 0.05% of births.
Source: US Social Security Administration, national and state name files, 2025 release. Etymology researched and written by our editors. Living-population and median-age figures are our own estimates, described in the methodology.