Economic Research Institute Study paper
Utah State University
They spend it! Use it to support their standard of living, sometimes referred to as "life style." In fact, last year a random sample of Cache Valley families showed they spent 86¢ of every dollar they earned to support their "life style." It didn't seem to matter whether they lived in the city or in rural areas of the county-- it ended up about the same. Housing costs for rural families were a little less than for city families, but higher transportation costs for the rural families about offset that for their lower housing expenses.
Clement, Lloyd A., "What Do Cache Valley Families Do With Their Money?" (1978). Economic Research Institute Study Papers. Paper 375.