An electromagnetic switch and related manufacturing method are disclosed having an electromagnetic coil creating an electromagnet when energized, a stationary core associated with the electromagnetic coil and operative to be magnetized when the electromagnet is created, one set of stationary contacts disposed in areas away from the stationary core, and a plunger carrying thereon a movable contact and operative to move toward the stationary contacts to close the same when the stationary core is magnetized by the electromagnet. The stationary core includes a base section and a disc section assembled to the base section. The disc section includes a plurality of stacked thin plates, fixedly secured to each other by fixing means, which have through-openings extending to each other in a circumferential direction in communication with each other to form a coil takeout opening through which an end portion of the electromagnetic coil is extracted.