It’s been reported that a Sone had recently gone to visit the glasses shop that Taeyeon’s parents own. In the fan account, it’s been reported that Taeyeon’s mother told the Sone that not all of the girls live together anymore since most of their families live near the dorm. Jessica, Sooyoung and Seohyun each live with their families whose homes are located near SNSD’s dorm. 

Sunny has moved into Sooyoung’s/Jessica’s bedroom.

Since Seohyun has moved out, Hyoyeon now has her own bedroom.

Taeyeon has her own bedroom (the bedroom she once shared with Sunny).

Tiffany still remains in her old single bedroom.

Yoona and Yuri are still roommates, sharing the same bedroom.

The fan account also states that when there are a lot of schedules, all 9 do return to the dorm to stay there.

Source: http://tieba.baidu.com/p/1300823536