An inductor device includes first, second, third and fourth wire, first and second connector, and eight-shaped inductor structure. First and second wires are disposed in first and second areas. Third wire is disposed in first area and partially overlapped with first wire in a vertical direction, and third wire is coupled to second wire. Fourth wire is disposed in second area and partially overlapped with second wire in the vertical direction, and fourth wire is coupled to first wire. First connector is partially overlapped with first wire or third wire in the vertical direction, and is coupled to inner wire and outer wire of third wire. Second connector is partially overlapped with second wire or fourth wire in the vertical direction, and is coupled to inner and outer wire of fourth wire. Eight-shaped inductor structure is disposed on outer side of third wire and fourth wire.