A stator includes a stator core having a plurality of split cores arranged in an annular shape. Each of the split cores includes a yoke portion and a tooth portion protruding from the yoke portion in a radial direction of the stator core. The yoke portions of adjoining split cores are connected to each other at joint surfaces of adjoining split cores. The joint surfaces are provided with a fitting portion that extends along an axial direction of the stator core from an upper end surface to a lower end surface of the stator core. The fitting portion is provided with a crimped portion.