| Official Name: | Yalquz Aghaj |
| Native Name: | Persian: یالقوزآغاج |
| Settlement Type: | Village |
| Pushpin Map: | Iran |
| Subdivision Type: | Country |
| Subdivision Name: | Iran |
| Subdivision Type1: | Province |
| Subdivision Name1: | East Azerbaijan |
| Subdivision Type2: | County |
| Subdivision Name2: | Marand |
| Subdivision Type3: | District |
| Subdivision Name3: | Koshksaray |
| Subdivision Type4: | Rural District |
| Subdivision Name4: | Yalquz Aghaj |
| Population As Of: | 2016 |
| Population Total: | 3537 |
| Population Density Km2: | auto |
| Timezone: | IRST |
| Utc Offset: | +3:30 |
| Coordinates: | 38.4847°N 45.6522°W |
| Coordinates Footnotes: | [1] |
Yalquz Aghaj (Persian: يالقوزاغاج) is a village in, and the capital of, Yalquz Aghaj Rural District of Koshksaray District, Marand County, East Azerbaijan province, Iran.[2]
At the time of the 2006 National Census, the village's population was 3,208 in 820 households, when it was in Koshksaray Rural District of the Central District.[3] The following census in 2011 counted 3,431 people in 984 households.[4] The 2016 census measured the population of the village as 3,537 people in 1,064 households.[5]
In 2019, the rural district and the city of Koshksaray were separated from the district in the establishment of Koshksaray District, which was divided into two rural districts, including the new Yalquz Aghaj Rural District, to which Yalquz Aghaj was transferred.[2]