Age refers to a person's age in whole years as at 31 December. The data are obtained from the Population Information System.
Age is also used as an auxiliary variable. For example, only people between 15 and 74 can be in the labour force.
Change of population is defined as increase of population added up with register corrections.
All persons entered in the Population Register are indicated a country of birth, which is determined on the basis of the mother's permanent home country at the time of birth. This means, for example, that the country of birth of Estonian immigrants born before Estonian independence is the Soviet Union. Similarly, the country of birth of people who were born in areas that Finland has subsequently ceded is Finland even though the area no longer is Finnish territory. Country of birth is indicated according to the form of government at the time of birth.
The divorce statistics are based on data on granted decrees of divorce transmitted to the Population Register Centre by courts of law. The statistics also include cases where a permanent resident of Finland is granted a divorce by a foreign court. If the divorce is granted abroad, it must be reported to the register keeper for registration of divorce. Exceptions are divorces granted to Finnish citizens in Sweden, on which the Swedish register keeper notifies the Finnish counterpart directly.
A divorce granted to a Finnish citizen abroad usually requires validation by the Helsinki Court of Appeal before registration. Divorce decisions given in the Nordic Countries and in the EU countries as of 1 March 2001 can be registered without validation.
As of 1980 'divorces' refer to the divorces of females permanently resident in Finland, unless otherwise indicated.
The amendment to the Marriage Act (411/1987), effective from 1 January 1988, simplified divorce proceedings. Divorce figures began to rise towards the end of 1988, when the first divorces (after a reconsideration period of six months) became effective under the new legislation. The Marriage Act no longer has regulations on 'cancellation of marriage' or 'nullification of marriage'. Before the new act came into force in 1988 these were in separate groups, now among divorces.
Infant mortality is calculated by dividing the number of deaths of infants under one year of age by the number of live births during the statistical year. Multiplying the result by 1,000 gives the figure in per mille.
An urban settlement is a cluster of dwellings with at least 200 inhabitants. The delimitation is based on the population information of the previous year. Urban settlements are defined and delimited in co-operation with the Finnish Environment Institute using geographic information methods that utilise the building and population data of Statistics Finland's 250 m x 250 m grid data. The population size of grids containing buildings and their neighbouring grids, as well as the number of buildings and their floor area, are reviewed in the definition. From the uniform clusters of dwellings generated in the defining stage, the ones with at least 200 inhabitants are selected.
The information on marital status is derived from the Population Information System of the Population Register Centre. It should be noted that common-law marriage or cohabiting is not a marital status. People representing all marital status categories may be cohabiting, including those who are still officially married.
The current divorce regulations no longer recognise the concept of legal separation. Those persons who are legally separated on the basis of the old divorce provisions prior to 1 January 1988 and still living apart have been slotted under married persons in the statistics.
Same-sex couples have been able to register their partnership in Finland as of 1 March 2002. For reasons of data protection, in municipal tables those living in a registered partnership are classified together with married persons, as are those divorced or widowed from a registered partnership with divorced and widowed persons.
The classification of marital status is as follows:
Marriages contracted refer to marriages contracted by females permanently resident in Finland, unless otherwise indicated. The number of males and females who contracted marriage is not equal because the number of marriages contracted between females permanently resident in Finland and males living permanently abroad differs from the number of marriages contracted between males permanently resident in Finland and females living permanently abroad.
The notion of mean population (or average population) refers to the average of the populations of two consecutive years. When a ratio describing some phenomenon is calculated for the statistical year, the number of events in the phenomenon in question is usually expressed as a proportion of the mean population of the people or the groups subject to the event. The figures relating to population events are generally given as per 1,000, that is, the result of the division is multiplied by one thousand.
During 2012, Statistics Finland has adopted a new origin classification. A similar classification is already used in the other Nordic countries. The origin and background country are determined based on the country of birth data of the person's parents. Using the origin classification it is easy to distinguish between first (born abroad) and second (born in Finland) generation Finns with a foreign back-ground.
Data on persons that died before 1964 have not been entered into the Population Information System of the Population Register Centre. There are nearly 900,000 persons among the Finnish population who have been born in Finland and both parent's country of birth is unknown because the parents of these persons have died before the Population Information System was established. People born in Finland before 1970, whose parents' background is not known, have been concluded to be of Finnish origin if their native language is a national language (Finnish, Swedish, Sami). All such persons who have at least one parent who was born in Finland are also considered to be of Finnish origin. The background country for all persons of Finnish origin is Finland.
Persons whose both parents or the only known parent have been born abroad are considered to be of foreign origin. Persons who have been born abroad and whose parents' data are not included in the Population Information System are also considered to be of foreign origin. Persons born in Finland before 1970, whose native language is a foreign language have been considered to be of foreign origin, as have persons born in Finland in 1970 or after this, whose parents' data are not included in the Population Information System.
If both parents of a person have been born abroad, the background country is primarily the country of birth of the biological mother. If a person only has knowledge of a father that was born abroad, the background country is the country of birth of the father. If either parent's country of birth is unknown, the background country for persons born abroad is their own country of birth. For persons born in Finland, whose parents' data are unknown and who have been deducted to be of foreign origin, the background country is unknown.
For children adopted from abroad, the adoptive parents are regarded as the biological parents. Thus a child adopted from abroad by persons born in Finland is of Finnish origin and their background country is Finland.
The population refers to the permanent resident population of an area (e.g. entire country, province, municipality). Those persons who according to the Population Information System had a legal domicile in Finland on 31 December belong to the permanent resident population in the country regardless of their nationality, as do Finnish nationals residing temporarily abroad.
Foreign nationals are domiciled in Finland if their stay is intended to last or has lasted at least one year. An asylum-seeker is not granted a legal domicile until his/her application has been approved.
The staff of foreign embassies, trade missions and consulates, their family members and personal employees included, are not counted among the resident population unless they are Finnish citizens. On the other hand, the Finnish staff of Finland´s embassies and trade missions abroad and persons serving in the UN peacekeeping forces are counted among the resident population.
The resident population of Finland on 31 December is derived from the Population Information System maintained by the Population Register Centre. Since the data for 1993, Statistics Finland and the Population Register Centre have had the same reference period, the turn of the year at midnight, which means that the number of population has been the same.
Registered partnership of two persons of the same sex aged 18 or over (Act on Registered Partnerships of 9 Nov. 2001/950). Partnership is registered by an authority entitled to perform civil marriage ceremonies. Registered partnership is dissolved when one partner dies or is declared dead, or when it is dissolved by court order.
The information about sex has been obtained from the Population Information System.
Municipal sub-areas are formed of operationally functional wholes defined by the municipality itself, which are the basis of the municipality's regional planning and monitoring. Statistics Finland is responsible for digitising new sub-area boundaries and for maintaining name files. Municipalities have the opportunity to check their sub-area division once a year.
The division into sub-areas is a hierarchical three-level classification which has a 1-digit major area level, a 2-digit statistical area level and a 3-digit small area level. Sub-areas are numbered consecutively using these three hierarchical levels. The 6-digit sub-area code is bound to the 3-digit municipality code, so the sub-area code consists of a total of nine characters.
Total change is increase of population added up with register corrections of population. Increase of population is the sum of excess of births and total net migration.