Kohgiluyeh and Boyer-Ahmad province () is one of the 31 provinces of Iran. It is in the southwest of the country, in Iran's Region 2. Its capital is the city of Yasuj. The province covers an area of 15,563 square kilometers.
Demographics
Language
Population
At the time of the 2006 National Census, the province's population was 621,428 in 125,779 households. According to the National Population and Housing Census, the population of Kohgiluyeh and Boyer-Ahmad Province in 2011 was 658,629 in 156,176 households. The 2016 census measured the population of the province as 713,052 inhabitants in 186,320 households.
Administrative divisions
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The population history and structural changes of Kohgiluyeh and Boyer-Ahmad Province's administrative divisions over three consecutive censuses are shown in the following table.
{| class="wikitable"
|+ Kohgiluyeh and Boyer-Ahmad Province
|-
! Counties !! 2006 || style="text-align: right;" | — || style="text-align: right;" | 20,699 || style="text-align: right;" | 21,690
|-
| Boyer-Ahmad || style="text-align: right;" | 212,552 || style="text-align: right;" | 243,771 || style="text-align: right;" | 299,885
|-
| Charam || style="text-align: right;" | — || style="text-align: right;" | 32,159 || style="text-align: right;" | 33,543
|-
| Dana || style="text-align: right;" | 52,242 || style="text-align: right;" | 52,040 || style="text-align: right;" | 42,539
|-
| Gachsaran || style="text-align: right;" | 131,628 || style="text-align: right;" | 119,217 || style="text-align: right;" | 124,096
|-
| Kohgiluyeh || style="text-align: right;" | 189,939 || style="text-align: right;" | 153,695 || style="text-align: right;" | 131,351
|-
| Landeh || style="text-align: right;" | — || style="text-align: right;" | — || style="text-align: right;" | 21,812
|-
| Margown || style="text-align: right;" | — || style="text-align: right;" | — || style="text-align: right;" | —
|-
| Total || style="text-align: right;"| 621,428 || style="text-align: right;"| 658,629 || style="text-align: right;"| 713,052
|}
Cities
According to the 2016 census, 397,461 people (over 55% of the population of Kohgiluyeh and Boyer-Ahmad Province) live in the following cities: