This is the 818th most frequent Finnish word.
kuopiossa
"In Kuopio" (a city in Finland).
'Kuopiossa' is the inessive case of 'Kuopio', expressing location within the city.
Asun nykyään Kuopiossa.
I currently live in Kuopio.
Here, 'Kuopiossa' indicates the place where the event is occurring.
Kuopiossa järjestetään tänä kesänä suuri festivaali.
A big festival is being organized in Kuopio this summer.
In this sentence, 'Kuopiossa' specifies the location where the data collection took place.