The Chiang Mai Metropolitan Area (Thai: เขตนครเชียงใหม่และปริมณฑล) is the urban sprawl of the twin cities of city of Chiang Mai and town of Lamphun. It has an area of around 2,905.13 km² in 2 Province, 2,302.88 km² in Chiang Mai and 602.25 km² in Lamphun. There are 1,099,473 inhabitants in the metropolitan area. The population density is 378.46 inh/km². Compared with combined area of the two province as 24,612.90 km², 2,071,294 inhabitants and 84.15 inh/km² density. The metropolitan area cover 11.80% of whole area and 45.46% of whole population.
The Metropolitan Area of Chiang Mai is located within the 8 inner amphoe (districts) of Chiang Mai province and 2 districts in Lamphun Province, northern Thailand. It has 1 City municipality, 2 town municipalities and 45 township municipalities.
| District name | Area | Population (2008) | Density |
|---|---|---|---|
| Mueang Chiang Mai | 154.2 | 369,460 | 1,768.11 |
| Mueang Lamphun, Lamphun Province | 479.80 | 142,881 | 297.79 |
| San Sai | 285.02 | 112,921 | 396.19 |
| Mae Rim | 443.60 | 85,968 | 193.80 |
| San Kam Phaeng | 197.83 | 76,424 | 386.31 |
| Saraphi | 97.45 | 76,138 | 781.03 |
| Hang Dong | 277.10 | 76,059 | 274.48 |
| San Pa Tong | 178.18 | 75,907 | 426.01 |
| Doi Saket | 671.30 | 66,101 | 98.74 |
| Ban Thi, Lamphun Province | 122.45 | 17,614 | 143.85 |
| Total | 2,905.13 | 1,099,473 | 378.46 |