What height should bathroom receptacle be off the ground?
There are no set rules for the height of receptacles on walls or over counters, even in a bathroom. Good practice is to keep them at least 4 inches above a counter top or backsplash and not directly over a sink or under a window. You can install them where ever they look good to you, but try to keep them as far left or right of the faucet as practicable.  Of course, all bathroom outlets must be GFCI protected.