The baby name Katlynn appears in baby name data for the United States from 1987 to 2011. It was most popular in 1998 with 279 babies given the name.
In the later years of this period, Katlynn has become less common than it once was.
| Year | Count |
|---|---|
| 1987 | 5 |
| 1988 | 19 |
| 1989 | 20 |
| 1990 | 90 |
| 1991 | 142 |
| 1992 | 67 |
| 1993 | 198 |
| 1994 | 197 |
| 1995 | 224 |
| 1996 | 212 |
| 1997 | 276 |
| 1998 | 279 |
| 1999 | 245 |
| 2000 | 209 |
| 2001 | 212 |
| 2002 | 106 |
| 2003 | 95 |
| 2004 | 136 |
| 2005 | 103 |
| 2006 | 85 |
| 2007 | 59 |
| 2008 | 34 |
| 2009 | 10 |
| 2010 | 8 |
| 2011 | 5 |