Popularity in the United States (by decade)
Numbers
| Stacy (feminine) | Stacy (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #1361 | 0.009 | - | - | ||
| 2010 | #1150 | 0.011 | - | - | ||
| 2000 | #675 | 0.020 | - | - | ||
| 1990 | #314 | 0.045 | #1086 | 0.005 | ||
| 1980 | #74 | 0.200 | #730 | 0.008 | ||
| 1970 | #38 | 0.425 | #271 | 0.042 | ||
| 1960 | #113 | 0.188 | #272 | 0.042 | ||
| 1950 | #404 | 0.025 | #591 | 0.008 | ||
| 1940 | #1503 | 0.002 | #853 | 0.004 | ||
| 1930 | - | - | #1072 | 0.003 | ||
| 1920 | - | - | #1098 | 0.004 | ||
| 1910 | #1962 | 0.002 | #1055 | 0.004 | ||
| 1900 | #1706 | 0.002 | #1026 | 0.004 | ||
| 1890 | #1682 | 0.001 | #1004 | 0.004 | ||
| 1880 | - | - | #1061 | 0.002 | ||
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