What is the voltage at your receptacle?

Hello, My electrician measured my dedicated wall receptacles at 124 volts each. I know that the proper range should be about 117-120 volts (USA). I was wondering what some of you have measured your wall power at and also if you think that 124 volts is too much? There is an electric company's power transformer on the back side of the half acre of property that our home is on. Our house could very well be the first house in line past that transformer. Thanks! Stan