This study is a sociolinguistic exploration into the survival of a transnational language in the United States - a multilingual and multicultural environment. Using an adapted General Ethnicity Questionnaire, it interrogates the social dimensions of heritage language use and the diverse linguistic experiences of 120 first-generation Yorùbá-English Nigerian Immigrants living in New York, Texas, and Maryland. It also conducts structured interviews with 30 of them. The study tests two hypotheses that examine the significance of age and length of stay on heritage language use. Findings reveal that first-generation Yorùbá-English Nigerian Immigrants report high frequencies of heritage language use with their co-ethnic peers as well as in their self-created micro-linguistic markets. Results also show that age and the length of stay are significant to heritage language use in the United States. Finally, these immigrants create enabling environments where the heritage language is used frequently, ensuring continued use and survival.