Ask Cortana anything: Snarky answers to 59 burning questions If nothing else, Windows 10's Cortana digital assistant proves sheâs more fun than Siri and Google Now put together.
Average Cost of Child Care in San Mateo County, 2007. Age Group. Centers. Family Child Care. Infant. $1,247/month. $936/month. Preschool. $819/month. $881/month. School Age. $375/month (part-time) $7.73/hour
Typical costs: 1  Assuming full-time day care for a 2 year old child on weekdays, according to Runzheimer International, the U.S. national average cost for full-time day care is $611 a month.  Large cities such as Boston and New York are most expensive, with average daycare costs of a little more than $1,000 a month. Contacting two KinderCares in the San Jose area about infant day care, we received quotes of $300-$330 a week, plus annual fees.