PIN Code of the village is: 341030. It is situated 12km away from Jayal town and 38km away from Nagaur city. Being a large village, Tarnau has its own gram Panchayat. Kasari, Chhajoli and Unchaira are some of the neighbouring villages.
According to Census-2011 information:
- With total 1032 families residing, Tarnau village has the population of 5544 (of which 2853 are males while 2691 are females).
Tarnau is located at 27° 07' 60.00" North Latitude & 74° 07' 00.00" East Longitude. It has an average elevation of 300 meters (987 feet).
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