Hattula is a municipality of Finland. Its seat is in Parola.
It is part of the Tavastia Proper region and until 2010 it was located in the province of Southern Finland. The municipality has a population of 9,755
(30 June 2015) and covers an area of 427.39 square kilometres (165.02sqmi) of
which 69.55km (26.85sqmi)
is water. The population density is
27.26 inhabitants per square kilometre (70.6/sqmi).