| Mianeh County | |
| Native Name: | Persian: شهرستان میانه |
| Settlement Type: | County |
| Image Map1: | IranEastAzerbaijan-SVG.svg |
| Map Caption1: | Location of East Azerbaijan province in Iran |
| Subdivision Type: | Country |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Seat Type: | Capital |
| Seat: | Mianeh |
| Parts Type: | Districts |
| Parts Style: | para |
| P1: | Central |
| P2: | Kaghazkonan |
| P3: | Kandovan |
| P4: | Torkamanchay |
| Population As Of: | 2016 |
| Population Total: | 182848 |
| Coordinates: | 37.4833°N 95°W |
| Coordinates Footnotes: | [1] |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
Mianeh County (Persian: شهرستان میانه),[2] is in East Azerbaijan province, Iran. Its capital is the city of Mianeh.[3]
The city of Torkamanchay is where the Treaty of Turkmenchay was signed by Russia and Iran in 1828.
After the 2011 National Census, the village of Achachi was elevated to the status of a city.[4]
In April 2024, Torkamanchay District was separated from the county in the establishment of Torkamanchay County.[5]
At the time of the 2006 census, the county's population was 187,870 in 46,469 households.[6] The following census in 2011 counted 185,806 people in 52,630 households.[7] The 2016 census measured the population of the county as 182,848 in 57,665 households.[8]
Mianeh County's population history and administrative structure over three consecutive censuses are shown in the following table.
| Administrative Divisions | 2006 | 2011 | 2016 | |
|---|---|---|---|---|
| Central District | 126,668 | 130,079 | 129,600 | |
| 8,205 | 6,331 | 5,394 | ||
| 5,121 | 4,107 | 3,553 | ||
| 5,825 | 5,209 | 4,402 | ||
| 2,636 | 2,026 | 1,843 | ||
| 12,166 | 11,920 | 7,372 | ||
| 2,958 | 2,673 | 2,617 | ||
| 2,372 | 2,308 | 1,799 | ||
| Achachi (city) | 3,647 | |||
| Mianeh (city) | 87,385 | 95,505 | 98,973 | |
| Kaghazkonan District | 11,101 | 9,366 | 10,729 | |
| 2,186 | 1,930 | 2,038 | ||
| 3,818 | 2,959 | 3,216 | ||
| 3,274 | 2,744 | 2,573 | ||
| Aqkand (city) | 1,823 | 1,733 | 2,902 | |
| Kandovan District | 24,820 | 23,637 | 21,131 | |
| 7,584 | 6,645 | 5,446 | ||
| 8,444 | 8,487 | 7,857 | ||
| 6,923 | 6,099 | 5,797 | ||
| Tark (city) | 1,869 | 2,406 | 2,031 | |
| Torkamanchay District | 25,281 | 22,724 | 21,387 | |
| 5,679 | 4,472 | 4,132 | ||
| 2,174 | 1,606 | 1,721 | ||
| 8,304 | 7,400 | 6,356 | ||
| 2,690 | 2,152 | 1,735 | ||
| Torkamanchay (city) | 6,434 | 7,094 | 7,443 | |
| Total | 187,870 | 185,806 | 182,848 | |