The town is situated in southeastern Prahova County, on the border with Buzău County; the four rural localities that surround it are Gura Vadului (north), Baba Ana (south), Săhăteni (east) and Fântânele (west) [REF].
Mizil covers 1931 ha, of which 77.7% are agricultural land, water, forests and green spaces, and 22.3% are developed [REF].