Khalkhal County should not be confused with Khalilabad County.
| Khalkhal County | |
| Native Name: | fa|شهرستان خلخال |
| Settlement Type: | County |
| Image Map1: | IranArdabil-SVG.svg |
| Map Caption1: | Location of Ardabil province in Iran |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ardabil |
| Seat Type: | Capital |
| Seat: | Khalkhal |
| Parts Type: | Districts |
| Parts Style: | para |
| P1: | Central |
| P2: | Khvoresh Rostam |
| P3: | Shahrud |
| Population As Of: | 2016 |
| Population Total: | 86731 |
| Coordinates: | 37.5°N 80°W |
| Coordinates Footnotes: | [1] |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Elevation M: | 1843 |
Khalkhal County (fa|شهرستان خلخال) is in Ardabil province, Iran. Its capital is the city of Khalkhal.[2]
The majority of Khalkhal County residents are Azerbaijanis, but there are many Tats and Kurds living in the southern areas of the county, especially in Shahrud District and Khvoresh Rostam District.
At the time of the 2006 National Census, the county's population was 92,315 in 22,969 households.[3] The following census in 2011 counted 92,332 people in 25,763 households.[4] The 2016 census measured the population of the county as 86,731 in 26,779 households.[5]
Khalkhal County's population history and administrative structure over three consecutive censuses are shown in the following table.
| Administrative Divisions | 2006 | 2011 | 2016 | |
|---|---|---|---|---|
| Central District | 64,037 | 66,901 | 61,122 | |
| 5,572 | 5,550 | 4,237 | ||
| 15,102 | 15,946 | 14,374 | ||
| 4,842 | 4,240 | 3,207 | ||
| Khalkhal (city) | 38,521 | 41,165 | 39,304 | |
| Khvoresh Rostam District | 14,577 | 12,781 | 13,839 | |
| 5,775 | 4,745 | 4,875 | ||
| 4,284 | 3,458 | 3,239 | ||
| Hashjin (city) | 4,518 | 4,578 | 5,725 | |
| Shahrud District | 13,701 | 12,650 | 11,770 | |
| 5,067 | 5,619 | 5,000 | ||
| 1,864 | 1,423 | 1,213 | ||
| 4,390 | 3,503 | 3,210 | ||
| Kolowr (city) | 2,380 | 2,105 | 2,347 | |
| Total | 92,315 | 92,332 | 86,731 | |