This study examines the use of English loanwords in L1 isiXhosa-L2 English bilinguals living in Cape Town, South Africa. The specific aim of the study is to investigate which individual background factors may increase or reduce the presence of English loanwords in a L1 isiXhosa speaker's repertoire. Data on English loanword use and individual background were collected through a picture naming task and a background questionnaire, respectively. Results showed that those speakers who frequently used English for interactive purposes were more prone to using English loanwords when naming pictures in isiXhosa. Moreover, it was documented that those who arrived at an early age in Cape Town (from the isiXhosa-dominant Eastern Cape Province) were also less prone to using isiXhosa words in the naming task. Marginal, negative effects were found for non-interactive isiXhosa use (i.e. radio, books, etc.) and attitudes towards English, such that those speakers with high indices on these variables used more often English loanwords. A marginal, positive effect of the presence of isiXhosa in primary and secondary school on the use of isiXhosa words was also found.