FI Finland Major Regions Postal Code Details
🏛️ Oulu · Pohjois Pohjanmaa
91930
Ala-Temmes
91310
Arkala
90480
Hailuoto
90860
Halosenniemi
90830
Haukipudas
90940
Jääli
91210
Jakkukylä
91410
Jokirinne
90820
Kello
90440
Kempele
90900
Kiiminki
90810
Kiviniemi
90910
Kontio
91560
Kylmälänkylä
91430
Leppiniemi
91900
Liminka
91980
Lumijoki
90850
Martinniemi
91500
Muhos
90150
Oulu
90460
Oulunsalo
91260
Pahkakoski
91510
Rova
91240
Tannila
91950
Temmes
91910
Tupos
91800
Tyrnävä
90470
Varjakka
91200
Yli-Ii
91300
Ylikiiminki
📮FI Finland Regional Postal Code FAQ & Postal Regulations
📮 What is the format of Finnish postal codes?
Finnish postal codes consist of 5 digits only (e.g., 00100). The first two digits indicate the region, while the last three specify streets or neighborhoods.
🔍 How to find a Finnish postal code?
Use the postal code search tool on Posti.fi official website by entering an address or city name. Map apps like Google Maps also provide real-time postal code lookup.
⚠️ Will an incorrect postal code cause lost mail?
Mail with correct addresses usually arrives but may be delayed (up to 5 days). Use Posti's parcel tracking service for real-time updates.
🌍 Are special markings needed for international mail?
Always write "FINLAND" in bold. For parcels exceeding €22 value, include a customs declaration form detailing contents and value to avoid delays.
📬 Do PO Box codes differ from street codes?
Yes! PO Box codes start with "PL" (e.g., PL 100). Never mix street and PO Box codes – this may cause delivery failures.