The fifth and sixth digits represent the county-level division – city district, county-level city, county and the banner area of Inner Mongolia. Codes 01 – 18 represent municipal districts or regions (autonomous prefectures and Mongolian leagues) under the jurisdiction of county-level cities. Codes 21 – 80 stand for counties and Mongolian banner areas while codes 81 – 99 represent county level cities directly administered by a province.
Division codes for statistical use
Division codes for statistical use consist of the administrative division codes and an additional 6 digits, identifying the administrative divisions of China at the village level and above.