Most of the population ( as of 2000 ) speaks German ( 98.0 % ) , with Romansh being second most common ( 1.3 % ) .
Portuguese being third ( 0.7 % ) .
Most of the population ( as of 2000 ) speaks German ( 98.0 % ) , with Romansh being second most common ( 1.3 % ) and Portuguese being third ( 0.7 % ) .