This project examined the preferred mode of response (internet, phone, mail) to a health services survey. Data were collected via survey responses from a subsample of Flint Water Crisis Medicaid Expansion Waiver enrollees (N=2,584). Analyses were stratified by age, residency, race, and income. Chi-square tests were used to detect categorical differences. The majority of participants responded by internet (55.5%), followed by mail (39.4%), and phone (5.2%). Of those responding by internet, 75% used smartphones for connectivity. Black and White respondents used the internet at a greater rate than Hispanic respondents (p<.01). Respondents at 200% federal poverty level (FPL) or higher used the internet mode at greater rates than those below 200% FPL (p<.01). Our findings suggest greater internet use in a vulnerable population than expected, but the digital divide persists. In the advent of COVID-19, this finding can inform future health programming using digital communication and telehealth.