Popularity in the United States (by decade)
Numbers
| Nancy (feminine) | Nancy (masculine) | |||||
| Year | Rank | Percent Used | Rank | Percent Used | ||
| 2020 | #947 | 0.016 | - | - | ||
| 2010 | #723 | 0.020 | - | - | ||
| 2000 | #290 | 0.054 | - | - | ||
| 1990 | #163 | 0.099 | - | - | ||
| 1980 | #114 | 0.138 | - | - | ||
| 1970 | #78 | 0.254 | - | - | ||
| 1960 | #26 | 0.755 | #1204 | 0.002 | ||
| 1950 | #9 | 1.453 | #1004 | 0.003 | ||
| 1940 | #7 | 1.692 | #855 | 0.004 | ||
| 1930 | #9 | 1.290 | #842 | 0.005 | ||
| 1920 | #62 | 0.353 | - | - | ||
| 1910 | #101 | 0.203 | - | - | ||
| 1900 | #111 | 0.185 | - | - | ||
| 1890 | #97 | 0.227 | - | - | ||
| 1880 | #72 | 0.342 | - | - | ||
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