Postal Code 011800 - Siziwang Banner, Inner Mongolia, China

The postal code 011800 is part of China’s standardized six-digit postal system, operated under the official framework of China Post, the national postal authority for China. Chinese postal codes follow the numeric pattern X X X X X X, such as 2 0 0 0 X X (illustrative example only). The first digit indicates the postal region, the next two identify the postal zone or prefecture, and the last three digits represent the district-level delivery branch. This code covers the locality of Siziwang Banner within the Inner Mongolia region of China, positioned approximately around latitude 41.5131 and longitude 111.6964. China’s routing hierarchy follows Province → Prefecture/City → District/County → Local Delivery Zone. A general routing example is: - Province: Inner Mongolia - Prefecture/City: (Example: Central Urban Prefecture) - District/County: Siziwang Banner - Delivery Zone: Determined by the last three digits of the postal pattern This page reflects the structural principles publicly used by China Post. All pattern examples are illustrative, not the actual assignment for 011800. For accurate delivery or address verification, confirm that the district/county matches Siziwang Banner, Inner Mongolia, China.