Over the past 110 years, 254 girls and 433 440 boys have been named Keith. The name Keith ranks 6293th in the United States among the most common names for girls. For the first time more than ten times newborns were named Keith in 1955. The peak of popularity of the name Keith came in the 1970s and 1980s. You can see absolute numbers and relative numbers on the chart. Indicators per 100K more accurately assess the popularity of the name.