The baby name Nanci appears in baby name data for the United States from 1938 to 2010. It was most popular in 1952 with 210 babies given the name.
In the later years of this period, Nanci has become less common than it once was.
| Year | Count |
|---|---|
| 1938 | 5 |
| 1939 | 29 |
| 1940 | 6 |
| 1942 | 24 |
| 1943 | 33 |
| 1944 | 48 |
| 1945 | 55 |
| 1946 | 64 |
| 1947 | 128 |
| 1948 | 109 |
| 1949 | 92 |
| 1950 | 120 |
| 1951 | 165 |
| 1952 | 210 |
| 1953 | 193 |
| 1954 | 149 |
| 1955 | 134 |
| 1956 | 178 |
| 1957 | 125 |
| 1958 | 119 |
| 1959 | 105 |
| 1960 | 125 |
| 1961 | 143 |
| 1962 | 68 |
| 1963 | 62 |
| 1964 | 70 |
| 1965 | 86 |
| 1966 | 96 |
| 1967 | 90 |
| 1968 | 54 |
| 1969 | 55 |
| 1970 | 58 |
| 1971 | 23 |
| 1972 | 22 |
| 1973 | 8 |
| 1974 | 10 |
| 1975 | 7 |
| 1979 | 5 |
| 1980 | 16 |
| 1983 | 5 |
| 1987 | 14 |
| 1989 | 5 |
| 1992 | 5 |
| 1993 | 10 |
| 1995 | 5 |
| 1996 | 8 |
| 1997 | 7 |
| 1998 | 27 |
| 1999 | 5 |
| 2000 | 10 |
| 2001 | 6 |
| 2004 | 12 |
| 2007 | 16 |
| 2010 | 5 |