| Changhai | |
| Postal Code Type: | Postal code |
| Postal Code: | 116500 |
| Settlement Type: | County |
| Pushpin Map: | China Liaoning |
| Pushpin Label: | Changhai |
| Pushpin Map Caption: | Location in Liaoning |
| Subdivision Type: | Country |
| Subdivision Name: | People's Republic of China |
| Subdivision Type1: | Province |
| Subdivision Name1: | Liaoning |
| Subdivision Type2: | Sub-provincial city |
| Subdivision Name2: | Dalian |
| Seat: | No. 1 Changhai Square, Dachangshandao (Chinese: 大长山岛镇长海广场1号) |
| Area Footnotes: | [1] |
| Area Total Km2: | 156.89 |
| Population Footnotes: | [2] |
| Population Total: | 66,824 |
| Population As Of: | 2020 |
| Population Density Km2: | auto |
| Coordinates: | 39.272°N 122.595°W |
| Timezone: | China Standard |
| Utc Offset: | +8 |
| Blank Name Sec1: | Dalian district map |
| Blank Name Sec2: | Division code |
| Blank Info Sec2: | 210224 |
Changhai County is a county under the administration of Dalian, Liaoning province, China. It consists of several islands in the Yellow Sea and is located offshore of the Liaodong Peninsula. There are 112 small islands and reefs in the county, traditionally called the Outer Long Mountains Island Chain . The county has an area of and a permanent population of 77,951, making it Dalian's least populous county-level division,[1] and the county government is located in the Dongshan neighborhood of the town of Dachangshandao .
There are 5 towns in the county.[3]
Towns:
| Census | Population | |
|---|---|---|
| 2000 | 99,532 | |
| 2010 | 77,951 | |
| 2020 | 66,824 |