Pirna is a village in the North Goa sub-district or taluka of Bardez and is located in the northern edge of the sub-district. It is close to the Colvale river and is the home of the 150-metre long Pirna-Ozarim bridge at Thorli Chandai. The bridge connects Pirna in Bardez taluka with Pernem taluka. It was inaugurated in May 2006.

Pirna is bounded on its west by the village of Nadora and Bicholim sub-district of taluka lies on its east. It is near to the Amthane dam, an important water supply project in North Goa.

Since it lies at one end of Bardez, it is surrounded by villages in two different sub-districts -- Mencurem and Advalpal in Bicholim taluka and Ozarim in Pernem taluka. Its neighbouring village of Advalpal in Bicholim is the abode of numerous temples.

This village is located around 28.5 kilometres from the state-capital Panjim or Panaji, and lies in the interiors of Bardez.

For postal purposes, the village is serviced from the nearby town of Colvale.

Pirna covers an area of 990.11 hectares and has a total of 632 households. Its population comprises 2,568 persons—1,267 males and 1,301 females. Its under-six population comprises 250 children, of whom 123 were boys and 127 girls, as per the 2011 official Census.

Pirna has a total of seven panchayat wards or vadde, the typical sub-divisions of a village in Goa. It also has 11 traditional vadde—including Talap, Gaunkar, Dessai, Sutar, Thorli, Chandal, Naik, Mesta, Kel.

Pirna has a canopy of green covering it—coconut palms, cashew plantations and rice paddy fields. It is home to water bodies and old temples.