Ústín is a municipality and village in Olomouc District in the Olomouc Region of the Czech Republic. It has about 400 inhabitants. Ústín lieā¦Ústín is a municipality and village in Olomouc District in the Olomouc Region of the Czech Republic. It has about 400 inhabitants. Ústín lies approximately 7 kilometres west of Olomouc and 205 km east of Prague.