Dallas generally has a lower cost of living than Austin. Housing is the biggest factor; you'll find more affordable apartments in Dallas, even in desirable neighborhoods. Groceries and utilities are also slightly cheaper. Austin's popularity drives up prices across the board. Transportation costs might be similar if you rely on a car in either city, but Dallas has a more extensive public transportation system, which could save you money. Entertainment can be cheaper in Dallas too, depending on your tastes. Austin has a reputation for live music and a pricier bar scene. Dallas offers a wider range of options, including more affordable restaurants and activities.