The objective of this study is to construct an expert system for zoning using mesh data. We create a knowledge base, collects and compiles data, and constructs system inference rules to classify all meshes to one of 12 zoning districts. The inference feature of this system consists of three phases. The first phase decides an outline of the zoning, namely all meshes are temporarily specified as one of residential, commercial, industrial, and mixed areas. The second phase classifies residential, commercial, industrial, and mixed areas into one of 12 zoning districts according to detailed indexes. The third phase coordinates the results, arranges sites of a certain scale, and respecifies meshes that are isolated from specified areas. After experimentally applying this system to Fukuoka city, we found that 80% of the results matches the zoning produced by the Fukuoka authorities. We therefore concluded that this system performs quite well.