Like everywhere else in academia, the more competitive/prestigious the school, the higher the GPA you would need, but there is a wide range of accredited law schools out there, and many of them are what is politely referred to as "non-competitive" (i.e., not very picky).
Have you taken the LCAT yet? Many people take it more than once to improve their scores, and it's only offered on specific dates so multiple takes eats up a lot of time. The schools will look at both your undergrad GPA and your LCAT score (among other things, but those are the two biggies), and they can balance each other out (i.e., with a high GPA you can get away with a lower LCAT, or vice versa).
I had a boyfriend a while back who had a GPA of 2.4 but got a v. high score on the LCAT (a combination which, to me, just screams "smart but lazy") who got into law school. Granted, it was a fourth-tier law school that probably would have been just as willing to accept my dog if the dog could come up with the tuition money -- but it's a legit, accredited law school and my ex is now a practicing attorney.
If you are willing to spend the time and effort to get your best LCAT score and shop around for a school (and relocate wherever to attend school), there is most likely a school out there for you whatever your GPA.