comScore Online ShoppingStaggering new figures suggest U.S. consumers are continuing to gravitate toward the more convenient e-commerce experience, as online shopping remained strong heading into December. According to a new comScore report, online sales during the first 39 days of 2011′s holiday shopping season reached nearly $25 billion, up 15 percent from the same period in 2010 – nearly $6 billion of that was spent in the week ending December 9 alone.

It’s an astonishing sum, especially since the December 9 week has historically been bad for retailers, said comeScore Chairman Gian Fulgoni.

“These highlights represent another very positive sign for the holiday shopping season, as the week following ‘Cyber Week’ often experiences relative softness in spending momentum due to retailers pulling back on their promotional activity,” Fulgoni said.

In addition, U.S. consumers hoping to land a deal during Cyber Monday spent $1.25 billion, up 22 percent from last year, while Black Friday 2011 online sales were up 26 percent over last year.

The record figures show no sign of slowing, either. During the second week of December (beginning December 12), “Green Monday” will kick off what is usually the busiest for online retailers.

Originally a term coined by eBay in 2007, Green Monday has twice ranked (2005, 2007) as the top spending day of the season. It also landed as the second-ranked spending day in 2006, 2008 and 2010.

But Green Monday may turn into Green Week, as more online retailers offer up promotions (such as “Free Shipping Day”) to encourage more consumer spending throughout the week leading up to the end of the year.

However retailers attract business, e-commerce is clearly a road consumers want to take. We’re huge fans of online shopping in the TechnoBuffalo offices. Plus, how nice is it to receive a package after a long day of work?

Have you purchased anything online this holiday season? Do you shop online more than in-store?

[Reuters, comScore]