474261。 According to the information of zhenping county People's Government website, Laozhuang Town, zhenping county is located in Nanyang City, Henan Province, with the postal code of 474261, the administrative division code of 411324113111, the license plate code of Yu R, and the telephone area code of 1377. It is located in the southwest of Henan Province and belongs to the central area of Nanyang Basin.