All metals conduct electricity somewhat.
Some do it better than others. As it turns out, the ones lined up in Group 11 of the Periodic Table (Copper, Silver, Gold, and maybe Roentgenium) do it better than the rest. They also happen to be very malleable (flexible) and suitable for wiring.
Copper is by far the least expensive of this group, so it is used almost exclusively for 'house wiring'.
BTW, Aluminum is not as good a conductor, but it is MUCH cheaper. This is why power utilities use aluminum for most 'everyday' applications in thgeir systems.