Popularity in the United States (by decade)
Numbers
| Kathleen (masculine) | Kathleen (feminine) | |||||
| 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 | #1441 | 0.002 | #32 | 0.640 | ||
| 1950 | #1209 | 0.002 | #15 | 1.137 | ||
| 1940 | #1149 | 0.002 | #18 | 1.027 | ||
| 1930 | #1810 | 0.001 | #72 | 0.313 | ||
| 1920 | - | - | #85 | 0.271 | ||
| 1910 | - | - | #105 | 0.195 | ||
| 1900 | - | - | #151 | 0.126 | ||
| 1890 | - | - | #193 | 0.083 | ||
| 1880 | - | - | #324 | 0.028 | ||
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