The cost of making ends meet for working families in Queen Anne’s County has nearly doubled over the last decade, according to a new study. No other county in the state has experienced such a great rise. Housing and childcare costs have skyrocketed, making it hard even for people who are working full time to pay their bills. The study by researchers at the University of Washington School of Social Work calculated how much families of different sizes and ages in varying locations must earn in order to meet basic needs, such as housing food, child care, transportation and health care, without government assistance. They found that the cost for one parent with a preschooler and school-age child in Queen Anne’s County rose from $33,855 in 2001 to $65,072 in 2012. Queen Anne’s County saw the biggest cost increases in housing and child care. For example, housing for a family of three now costs $1,518 a month, a 110 percent increase, the study says. Childcare went up 91 percent to $1,425.