We purchased a Database USA list for households with a $50,000 annual income and children in the household ages 0-3 for our preschool. When we printed the list out, members of our own church that had children that graduated High School were on the list. We also found students attending college on our list, which could not possibly meet the income criteria. Out of 850 some names- we have pulled 40 names that we know not to meet the data criteria...and counting. It appears Data USA lists are at least a decade old. Buyer beware.