Kacy is an uncommon variant of Kasey that peaked in 1990 and has since faded.
Kacy is predominantly a girl name. In 2025 it ranked #8,594 among girls (12) and #7,938 among boys (10) — overall #9,789 across all names. The charts below show girls and boys separately.
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 22 | 22 | #8,594 | #7,938 |
| 2024 | 30 | 30 | #6,037 | #8,029 |
| 2023 | 23 | 23 | #9,279 | #7,096 |
| 2022 | 26 | 26 | #7,121 | #8,033 |
| 2021 | 31 | 31 | #5,648 | #8,499 |
| 2020 | 21 | 21 | #5,746 | — |
| 2019 | 32 | 32 | #5,222 | #10,268 |
| 2018 | 36 | 36 | #4,937 | #8,483 |
| 2017 | 42 | 42 | #4,179 | #10,214 |
| 2016 | 40 | 40 | #3,815 | — |
| 2015 | 45 | 45 | #3,807 | #13,023 |
| 2014 | 50 | 50 | #3,619 | #10,170 |
| 2013 | 40 | 40 | #4,481 | #9,211 |
| 2012 | 51 | 51 | #3,814 | #7,837 |
| 2011 | 56 | 56 | #3,290 | #11,540 |
| 2010 | 49 | 49 | #3,340 | — |
| 2009 | 55 | 55 | #3,486 | #9,419 |
| 2008 | 58 | 58 | #3,184 | #13,555 |
| 2007 | 92 | 92 | #2,320 | #8,560 |
| 2006 | 90 | 90 | #2,384 | #7,174 |
| 2005 | 111 | 111 | #2,024 | #4,729 |
| 2004 | 112 | 112 | #1,915 | #5,636 |
| 2003 | 120 | 120 | #1,736 | #6,489 |
| 2002 | 99 | 99 | #1,906 | #10,024 |
| 2001 | 80 | 80 | #2,313 | #6,231 |
| 2000 | 101 | 101 | #1,909 | #5,738 |
| 1999 | 110 | 110 | #1,684 | #5,489 |
| 1998 | 109 | 109 | #1,783 | #3,547 |
| 1997 | 118 | — | #1,692 | #3,026 |
| 1996 | 166 | — | #1,241 | #2,977 |
| 1995 | 162 | — | #1,219 | #3,252 |
| 1994 | 166 | — | #1,220 | #3,172 |
| 1993 | 152 | — | #1,321 | #2,825 |
| 1992 | 217 | — | #1,036 | #2,112 |
| 1991 | 207 | — | #1,034 | #2,435 |
| 1990 | 222 | — | #958 | #2,580 |
| 1989 | 202 | — | #983 | #2,512 |
| 1988 | 193 | — | #1,002 | #2,170 |
| 1987 | 203 | — | #942 | #2,088 |
| 1986 | 180 | — | #984 | #2,646 |
| 1985 | 184 | — | #976 | #2,097 |
| 1984 | 169 | — | #1,005 | #2,070 |
| 1983 | 175 | — | #963 | #2,240 |
| 1982 | 172 | — | #992 | #2,239 |
| 1981 | 163 | — | #1,052 | #2,018 |
| 1980 | 160 | — | #1,038 | #2,323 |
| 1979 | 176 | — | #964 | #2,020 |
| 1978 | 145 | — | #1,079 | #2,106 |
| 1977 | 90 | — | #1,584 | #2,164 |
| 1976 | 88 | — | #1,552 | #2,085 |
| 1975 | 105 | — | #1,465 | #1,520 |
| 1974 | 79 | — | #1,761 | #1,727 |
| 1973 | 80 | — | #1,779 | #1,565 |
| 1972 | 53 | — | #1,904 | #3,481 |
| 1971 | 49 | — | #2,398 | #2,324 |
| 1970 | 39 | — | #2,471 | #3,401 |
| 1969 | 47 | — | #2,615 | #1,837 |
| 1968 | 30 | — | #3,686 | #2,069 |
| 1967 | 14 | — | #3,549 | — |
| 1966 | 30 | — | #2,978 | #2,393 |
| 1965 | 10 | — | #4,336 | — |
| 1964 | 6 | — | — | #3,827 |
| 1963 | 5 | — | — | #4,339 |
| 1962 | 17 | — | #3,890 | #4,351 |
| 1961 | 8 | — | #5,068 | — |
| 1959 | 7 | — | #5,283 | — |
| 1958 | 8 | — | #4,695 | — |
| 1957 | 10 | — | #4,057 | — |
| 1956 | 9 | — | #4,303 | — |