In addition to employing tokenizing algorithms to identify address elements, the Postal Matcher also defines geographic elements into logical hierarchies. As shown in the following table, a Level 1 geography is the highest (largest) geographic or postal level. The following table shows the geographic levels and examples for China.
| Term | Concept | Metro Example | City/Suburb Example | Rural Example |
|---|---|---|---|---|
| Level 1 | Four Major cities/ Province | 北京市 | 广东省 | 四川省 |
| Level 2 | City | 北京市 | 深圳市 | 成都市 |
| Level 3 | CountyDistrict/etc. | 海淀区 | 南山区 | 蒲江县 |
| Area |
Area |
上地信息产业基地 | 蛇口工业区 | |
| Level 4 | St./Rd./etc | 上地五街 | 工业一路 | 鹤山镇大北街 |
| Apt / House |
House # /Building #/Building Name |
9号 | 1号 | 45号 |
| Postcode | Postal Code | 100085 | 518067 | 611630 |