The baby name Joslyn appears in baby name data for the United States from 1950 to 2024. It was most popular in 2007 with 507 babies given the name.
In the later years of this period, Joslyn has become more popular compared with earlier years.
| Year | Count |
|---|---|
| 1950 | 5 |
| 1951 | 10 |
| 1952 | 10 |
| 1954 | 11 |
| 1955 | 10 |
| 1956 | 6 |
| 1958 | 5 |
| 1959 | 10 |
| 1969 | 10 |
| 1972 | 12 |
| 1976 | 11 |
| 1977 | 88 |
| 1978 | 49 |
| 1979 | 40 |
| 1980 | 29 |
| 1981 | 34 |
| 1982 | 39 |
| 1983 | 34 |
| 1984 | 56 |
| 1985 | 25 |
| 1986 | 28 |
| 1987 | 21 |
| 1988 | 67 |
| 1989 | 50 |
| 1990 | 67 |
| 1991 | 87 |
| 1992 | 89 |
| 1993 | 87 |
| 1994 | 115 |
| 1995 | 76 |
| 1996 | 152 |
| 1997 | 137 |
| 1998 | 146 |
| 1999 | 135 |
| 2000 | 129 |
| 2001 | 188 |
| 2002 | 226 |
| 2003 | 252 |
| 2004 | 362 |
| 2005 | 470 |
| 2006 | 483 |
| 2007 | 507 |
| 2008 | 430 |
| 2009 | 427 |
| 2010 | 465 |
| 2011 | 500 |
| 2012 | 465 |
| 2013 | 420 |
| 2014 | 299 |
| 2015 | 370 |
| 2016 | 283 |
| 2017 | 340 |
| 2018 | 209 |
| 2019 | 183 |
| 2020 | 157 |
| 2021 | 97 |
| 2022 | 78 |
| 2023 | 29 |
| 2024 | 28 |