Sub-regional units 2013
The purpose of regional classifications used in statistics is to describe regional variations of various phenomena and regional structure. As most regional classifications, the division of sub-regional units is based on the administrative regional division.
The division of sub-regional units was adopted in 1994 as a basic division of the acts on regional policy (Act on regional development 1135/93). The criteria used for forming sub-regional units have mainly been cooperation between municipalities and employment.
Municipalities, sub-regional units, regions and the statistical grouping of municipalities are the primary regional classifications used in Finland's statistical system. Other municipality-based regional classifications used in statistics are major regions, Regional State Administrative Agencies (AVI) and Centres for Economic Development, Transport and the Environment (ELY centres). Types of municipalities include the cost-of-living classification, financial capacity classification, language distribution classification and municipality form classification.
Changes in sub-regional units on 1 January 2013: Nilsiä (534) merged with the municipality of Kuopio (297) and the area of the former municipality of Nilsiä moved from the sub-regional unit of Koillis-Savo (113) to that of Kuopio (112). Suomenniemi (775) merged with the municipality of Mikkeli (491) and the area of the former municipality of Suomenniemi moved from the sub-regional unit of Lappeenranta (091) to that of Mikkeli (101). Yli-Ii (972) merged with the municipality of Oulu (564) and the area of the former municipality of Yli-Ii moved from the sub-regional unit of Oulunkaari (173) to that of Oulu (171). Kiikoinen (254) merged with the municipality of Sastamala (790) and the area of the former municipality of Kiikoinen moved from the sub-regional unit of Pohjois-Satakunta (044) to that of Lounais-Pirkanmaa (068). Vähäkyrö (942) merged with the municipality of Vaasa (905) and the area of the former municipality of Vähäkyrö moved from the sub-regional unit of Kyrönmaa (151) to that of Vaasa (152). The number of sub-regional units remained unchanged and their number in Mainland Finland is 67.
The classification of sub-regional units is a classification compiled for national needs.