The term "Poshtkuh, Markazi" does not correspond to a widely recognized or established geographic, administrative, or cultural entity in available reliable sources. It appears to combine "Poshtkuh," a Persian term meaning "behind the mountain" commonly used in Iran to denote regions located on the southern or inland side of mountain ranges, and "Markazi," which refers to the Central Province (Markazi Province) of Iran.
While several villages and rural districts in Iran bear the name "Poshtkuh" in various provinces, including possibly Markazi Province, no specific, officially designated location or administrative division named "Poshtkuh, Markazi" is confirmed in authoritative geographic or governmental records. Accurate information regarding population, coordinates, historical significance, or administrative status for this exact term is not confirmed.
The designation may refer informally to a local area or topographic feature within Markazi Province but lacks documentation in standard encyclopedic or cartographic sources.