This edition provides demographic and cost information in children in foster care state by state along with nationwide totals. On average during 2010, 885,000 foster children were covered by Medicaid. Average Medicaid costs per foster child were $6,476 in 2010, ranging from a low of $3,217 in Washington State to a high of $20,084 in Vermont. Eighteen percent of national Medicaid spending on foster children was paid via capitation to health plans during 2010.