The municipality covers an area of 6.1 square kilometres (2.4 sq mi), and has a population of 1,339 (as at 3 July 2006).
Telnice lies approximately 13 kilometres (8 mi) south-east of Brno and 199 km (124 mi) south-east of Prague.
The village was the focus of tough fighting during the Battle of Austerlitz on 2 December 1805. Austrians under Michael von Kienmayer and Russians under Dmitry Dokhturov and Friedrich Wilhelm von Buxhoeveden wrested the village from the French 3rd Line Infantry Regiment, lost it to a counterattack, and finally recaptured it. After the battle went against the allies farther north, they evacuated Telnice and retreated, suffering heavy losses in men and artillery pieces.