It’s good to memorize your address, because you will need it in several occasions. Your mail is carried to your apartment so even the number of the apartment is important. On official forms and other occasions you may be asked to fill in your street address (lähiosoite or katuosoite), postal code (postinumero) and town/city (postitoimipaikka). The street address usually consists of street name, house number, corridor letter and apartment number, e.g. Jämeräntaival 5 B 16.

Steven Student
Jämeräntaival 5 B 16
02150 Espoo

Keep your address information up to date in the civil register by making a Notification of moving (muuttoilmoitus) when you arrive, when you move to a new address in Finland, and when you leave Finland. Read more in After arrival: Maistraatti.