Salkhua is located in the southern part of Saharsa District
. It is around 26 km south of Saharsa
, the district headquarters.
Kosi River has its course through the region. The archeological site of Viratpur is 24 km north. Ugratara Temple, located at Maheshi, is a another nearby attraction.
Nearest airport is Patna Airport. Simri Bakhtiyarpur Railway Station is the nearest railhead.