20002000: no US SSA record for this spelling
2001: no US SSA record for this spelling
2002: no US SSA record for this spelling
2003: no US SSA record for this spelling
2004: no US SSA record for this spelling
20052005: no US SSA record for this spelling
2006: 12 births, rank #9,286
2007: 16 births, rank #7,733
2008: 20 births, rank #6,559
2009: 7 births, rank #13,704
20102010: 9 births, rank #11,246
2011: 8 births, rank #12,153
2012: 9 births, rank #11,257
2013: 6 births, rank #14,582
2014: no US SSA record for this spelling
20152015: 7 births, rank #13,006
2016: no US SSA record for this spelling
2017: 6 births, rank #14,124
2018: no US SSA record for this spelling
20192019: 5 births, rank #15,539
In 2019, 5 babies were recorded with the name Cassy, ranking #15,539 among girls.