Jayce is uncommon as a baby girl name. It is not in the top 1000 names. Jayce has in the last century been primarily given to boys.
Baby names that sound like Jayce include Jacey (English), Jaycee (English), Jaycey, JC (English), Jaasau, Jacci (English), Jacki (English), Jackie (English), Jacky (English), Jacqi, Jacqua, Jacqui (English and French), Jacquie (French), Jae Hwa, Jaey, Jaha, Jahi (African and Swahili), Jaia, Jaki, and Jaquai.
† English pronunciation for Jayce: JH as in "joy (JH.OY)" ; EY as in "ate (EY.T)" ; S as in "see (S.IY)" ; IY as in "eat (IY.T)" ; Z as in "zoo (Z.UW)"