Popularity in the United States (by decade)
Numbers
| Kathleen (feminine) | Kathleen (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #1024 | 0.014 | - | - | ||
| 2010 | #748 | 0.020 | - | - | ||
| 2000 | #314 | 0.050 | - | - | ||
| 1990 | #129 | 0.126 | - | - | ||
| 1980 | #69 | 0.213 | - | - | ||
| 1970 | #69 | 0.272 | - | - | ||
| 1960 | #32 | 0.640 | #1441 | 0.002 | ||
| 1950 | #15 | 1.137 | #1209 | 0.002 | ||
| 1940 | #18 | 1.027 | #1149 | 0.002 | ||
| 1930 | #72 | 0.313 | #1810 | 0.001 | ||
| 1920 | #85 | 0.271 | - | - | ||
| 1910 | #105 | 0.195 | - | - | ||
| 1900 | #151 | 0.126 | - | - | ||
| 1890 | #193 | 0.083 | - | - | ||
| 1880 | #324 | 0.028 | - | - | ||
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