Prahova County
| Prahova County Județul Prahova | |
|---|---|
| Coordinates: 45°06′N 26°01′E / 45.1°N 26.02°E | |
| Country | Romania | 
| Development region | Sud-Vest | 
| Historical region | Muntenia | 
| Capital | Ploiești | 
| Government | |
| • President of the County Board | Virgiliu Daniel Nanu (PSD) | 
| • Prefect | Emil Drăgănescu | 
| Area | |
|  • Total | 4,716 km2 (1,821 sq mi) | 
| • Rank | 33rd | 
| Population  (2021-12-01) | |
|  • Total | 695,119 | 
| • Rank | 3rd | 
| • Density | 150/km2 (380/sq mi) | 
| Telephone code | (+40) 244 or (+40) 344 | 
| ISO 3166 code | RO-PH | 
| GDP (nominal) | US$ 7.012 billion (2015) | 
| GDP per capita | US$ 9,191 (2015) | 
| Website | County Council Prefecture | 
Prahova County (Romanian pronunciation: [ˈprahova]) is a county (județ) of Romania, in the historical region Muntenia, with the capital city at Ploiești.