Numbers

4.5 million: U.S. children in grandparent homes.

$725: Estimated average monthly cost to raise a child.

$20,000: Average annual poverty level income in U.S.

$4.5 billion: Estimated annual added foster care cost if grandchildren entered system.

57: Average age of grandparent as parent.

20: Percentage of grandparents raising grandchildren in poverty.

47: Percentage of grandparents raising grandchildren, who are white.

29: Percentage of grandparents raising grandchildren, who are African-American.

17: Percentage of grandparents raising grandchildren, who are Hispanic.

7: Percentage of grandparents raising children, who are Asian, American Indian or from another ethnic group.