Summaryof cost of living in Vietnam: A family of four estimated monthly costs are 1,670.8$ (40,716,890.0₫) without rent. A single person estimated monthly costs are 473.9$ (11,547,539.9₫) without rent. Cost of living in Vietnam is, on average, 59.1% lower than in United States. Rent in Vietnam is, on average, 79.0% lower than in United States. yqjaz.