A total of 19.513 Afghans have reportedly arrived in their homeland over the period from Iran, 5 percent less than the previous week, said IOM in a statement.
Meanwhile, 954 Afghans have returned from Pakistan back home over the period.
"This number marks a 700-percent increase compared to the previous week (137)," the statement noted.
The IOM has provided post-arrival humanitarian assistance, including food and non-food items to the returnees.
More than 463,000 Afghan refugees have returned to the poverty-stricken country from the two neighboring states since Jan. 1 this year, the statement said.