What should a typical house voltage read/be?

My house also runs at 123 volts pretty steadily. Believe me, this is a good thing in most cases. Sean
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All is well! I believe voltage will usually come in between 117 V. to 125 V. I recently upgraded from an ancient wall outlet to a high grade outlet, as well as cleaning wire ends and terminals (MAKE SURE THAT THE CIRCUIT BREAKER OR FUSE IS OFF!) and the voltage jumped from 120 to 123! Not bad! Happy Tunes!

Power companies usually quote the voltage as either 110 or 120, depending on the type of transformer that's feeding your house. But more often than not, they will push the limits on the high side deliberately, because they sell more power that way! Even going from 120 to 123 is a 5% increase in wattage (at least for resistive loads like light bulbs), not bad to add to the bottom line if you're a bean counter. Going from 110 to 125 is a 30% increase in power consumption!