Study summary
Social and demographic context
The four-province influence area had approximately 19.7 million residents in 2021/22, equal to 23.5% of the national population that year. The immediate influence area covered seven counties and more than 1.43 million residents.
Public summary
Key findings
The four-province influence area had approximately 19.7 million residents in 2021/22, equal to 23.5% of the national population that year.
The immediate influence area covered seven counties and more than 1.43 million residents.
Population is unevenly distributed, with Tehran holding the largest share; labour and market planning must remain package-specific.