Changes as of 1 January 2005
Mynämäki (503) was moved from the sub-regional unit of Vakka-Suomi (024) to that of Turku (023).
Punkalaidun (619) was moved from the sub-regional unit of Pori (043) to that of Lounais-Pirkanmaa (068).
The sub-regional unit of Kärkikunnat (094) was abolished, whereupon the municipality of Parikkala (580) was moved to the sub-regional unit of Imatra (093).
The sub-regional unit of Outokumpu (121) was abolished, whereupon the municipalities of Outokumpu (309) and Polvijärvi (607) were moved to the sub-regional unit of
Joensuu (122).
The sub-regional unit of Ilomantsi (123) was abolished, whereupon the municipality of Ilomantsi (146) was moved to the sub-regional unit of Joensuu (122).
Changes as of 1 January 2004
Hlaukivuori (085) was moved from the sub-regional unit of Pieksämäki (105) to that of Mikkeli (101).
Sulkava (768) was moved from the sub-regional unit of Juva (102) to that of Savonlinna (103).
The sub-regional units of Saarijärvi (136) and Viitasaari (137) were united as the sub-regional unit of Saarijärvi-Viitasaari (138).
Korpilahti (277) from the sub-regional unit of Jämsä (134), Petäjävesi (592) from the sub-regional unit of Keuruu (133) and Hankasalmi (077) and Toivakka (850) from the sub-regional unit of Kaakkoinen Keski-Suomi (132) were moved to the sub-regional unit of Jyväskylä (131).
The sub-regional unit of Kaakkoinen Keski-Suomi changed its name into the sub-regional unit of Joutsa. The numerical code is still the same, 132.
The sub-regional unit of Kaakkois-Satakunta(042) was abolished. As a result, Köyliö (319) and Säkylä (783) were moved to the sub-regional unit of Rauma (041). Huittinen
(102), Kokemäki (271), Punkalaidun (619) and Vampula (913) were moved to the sub-regional unit of Pori (043).
Merikarvia (484) was moved from the sub-regional unit of Pohjois-Satakunta (044) to the sub-regional unit of Pori (043).
Changes as of 1 January 2003
The sub-regional unit of Ii (173) changed its name into the sub-regional unit of Oulunkaari. The numerical code of the sub-regional unit remains the same.
Changes as of 1 January 2002
Kangaslampi (212) was moved from the sub-regional unit of Juva (102) to the sub-regional unit of Varkaus (114).