Luxury home prices in Silicon Valley moved higher once again last month as the region’s high-end market continued to gain momentum, according to Coldwell Banker Residential Brokerage.

The median sale price for a million-dollar-plus home in Santa Clara County reached $1,471,000, up 8.9 percent from a year ago and 6 percent from November, when it stood at $1,387,000.

While prices moved higher, luxury sales were flat as the year came to a close. Some 155 homes sold for more than $1 million, down fractionally from 158 sales in December 2010. Sales were down more sharply from November, when they stood at 232.

However, the number of multimillion-dollar sales climbed to 33 in December, up from just 22 a year ago. There were 46 sales of more than $2 million in November.

The figures were derived from Multiple Listing Service data of all homes sold for more than $1 million last month in Santa Clara County.