The table below shows the most popular names for the state of Colorado as calculated by the Social Security Administration (SSA) from birth certificate data from 2005.
2005 Baby Names for Colorado
| Boy's Names | Girl's Names |
| Jacob | Emily |
| Joshua | Emma |
| Alexander | Isabella |
| Joseph | Madison |
| Ethan | Abigail |
| Tyler | Olivia |
| Daniel | Hannah |
| Michael | Ashley |
| Andrew | Samantha |
| Anthony | Ella |
