Updated: 21 January 2021

Next update: Not yet determined

Proportion of the population 45-49 years who live in cohabitation
Proportion of the population 45-49 years who live in cohabitation

Selected tables and figures from this statistics

Proportion of cohabitants, married and single by age. Per cent. Males and females.
Proportion of cohabitants, married and single by age. Per cent. Males and females.
Cohabitation, sex, age199920002001200220032004200520062007200820092010201120122013201420152016201720182019
16-19 years121221111331112231112
20-24 years171114271918252324212419182118222015171621
25-29 years393536374043373940372933413140363734333834
30-34 years323733333731293137302828363437344138423841
35-39 years232219272627252426282631282931333629292831
40-44 years151421152217241923192322192024222025242526
45-49 years12139141814181716202117212420162122222423
50-54 years1171011141591210111516131619171816191420
55-59 years967107128111011911121412171521221617
60-69 years6367567778576899111071312
70-79 years331236234424467574566
16-19 years766447847546421532342
20-24 years322931353532363837363032343229302430283024
25-29 years423841394840454139443951413445494337413944
30-34 years282726313335322830343233383338344033333039
35-39 years181520222227222425242625292827312430272326
40-44 years151516161517191918202020261925202125211726
45-49 years111212121413131416212017211820202122201821
50-54 years79611998121091511121416132213171822
55-59 years647675848871179910910142111
60-69 years5245233465475594779910
70-79 years111122323223331222344
16-19 years........1......1..00000000000
20-24 years122442321132225121022
25-29 years1517151418161615161119211216121718171488
30-34 years423637373637364544414345283034373232303329
35-39 years555354484944534951495049524746484447505046
40-44 years656456615460565856525563656351555953545350
45-49 years706871706764606465555657585756615655556158
50-54 years767672696770717168696666696758625955535658
55-59 years777276777572747370757375706871636460596260
60-69 years748178767979757571777772767475717170736571
70-79 years766974757972777871778074787476767375768170
16-19 years110010110..10000000100
20-24 years846584675757646334231
25-29 years303125292426232730232721212820281519181613
30-34 years485349504346414847494252404243453842444541
35-39 years606559565856565854565457575056535353555553
40-44 years626462636461596059616259526655575753495857
45-49 years717267696358636162615655536161565953595356
50-54 years717272697066646470676060666158575560555955
55-59 years697571757462696770696161686471616264615253
60-69 years686865606470676461686569716562686267646261
70-79 years504243515342504749535647465559545451565959
16-19 years999899989799999998979899999998989799999998
20-24 years878469768072757529777379807777777984838277
25-29 years464848484241474645525245465347474548535558
30-34 years262730292732352420292827363629292730283029
35-39 years232527252529222724232421192423202125222123
40-44 years192223232423202321292315161724232122222123
45-49 years181919171623222019252327212023232323231520
50-54 years131718191815201722202019171723212329292922
55-59 years152217141716181620141814181717212120202324
60-69 years201615181615181922151821181816191820202220
70-79 years212825231822211925191822182117191921191325
16-19 years929394969593919693959594969899959798979698
20-24 years606763635864585558576562616566677366706675
25-29 years283134332934323231333428383936234244424443
30-34 years242025202419272424162615212620212324242520
35-39 years232020222017221722202018152218172317172221
40-44 years232123192121222123201821221620232123302517
45-49 years171621192329252523182428272019242025213022
50-54 years231921202124282420232529222527302427292323
55-59 years252122192033232923243228262720282826252836
60-69 years263031353426303233263124242929283126272927
70-79 years495755484657475148454251514340444447413837
Explanation of symbols

About the statistics

Percentage of cohabitants in the population aged 16-79 years.


The statistics is based on a sample of all persons between 16-79 years who was resident in Norway according to the population register.


Two persons who lives in the same residence and is married to each other, registered partners or cohabiting is counted as a couple.

Not relevant

Name: Cohabitants

Topic: Population

Not yet determined

Division for Population Statistics


Every third year

Not relevant

Files on individual level containing data that are processed and stored in the long term.

The statistics is based on surveys and place of usual residence for women and men aged 16-79 years. It shows proportions of cohabitants, married and singles in different age groups. The first figures published are from 1977 for women and 1988 for men. Since 1993 annual figures have been published.

The statistics have a wide range of users and applications, including institutes involved in researching demographics and living conditions, public administration, the mass media and private persons.

No external users have access to the statistics and analyses before they are published and accessible simultaneously for all users on at 08 am. Prior to this, a minimum of three months' advance notice is given inthe Statistics Release Calendar. This is one of Statistics Norway’s key principles for ensuring that all users are treated equally.

The statistics is based on a survey and whether a person is defined as a cohabitant or not depends on what answer the person himself gives to this question. In register based statistic one must be registered on the same legal residence address to be defined as cohabitants. Experience shows that statistics based on registers and legal residence address result in fewer cohabiting couples than statistics from surveys based on interviews and place of usual residence.

Statistics Act § 10

Not relevant

The statistics cover a sample of the Norwegian population in the age group 16 - 79 years.

The sources for this statistics are the Population register in combination with the Travel survey.

The Travel survey is carried out among 8 000 Norwegians between 16 and 79 years of age, according to Statistics Norway's standard sampling procedure.

Interview (telephone)/CATI

A computer is used during the interview. The interviewer reads the questions aloud from the screen and the answers are registered instantly. This allows the data to be controlled immediately, and it reduces the risk of asking the interviewee wrong questions.

The proportion of cohabitants in an age group is estimated by the number of people in an age group who have answered that they are cohabitants compared to everyone who has answered the questions on relationship status in the same age group. The proportion who are married/not in a relationship are calculated in the same way.

The total number of cohabitants is estimated by multiplying the estimated proportion of cohabitants in an age group by the mean population in the same age group.

Not relevant
Not relevant

From 2005 data from Statistics Norway's Travel survey has been used. Former sources have been the Fertility survey 1977, Family and Occupation Survey 1988 and Omnibus Surveys 1993-2004. The questions have been the same in all surveys. It is expected that use of data from different surveys do not influence the comparability in the time series.

Collection errors, like when the interviewee gives incorrect information, or processing errors, like when the interviewer registers the answer incorrectly, are tried kept to a minimum by automatically controlling the answers during the interview. Nevertheless, there may still be some errors left. The number and kind of errors are not known.

The unit non-response has inceased somewhat over the years, and is approximately 40 per cent. Non-response errors are errors caused by unit non-response, i.e. that the unit (for instance an individual or a company) has failed to respond, or item non-response, i.e. that the unit has failed to respond to some but not all the questions in the survey.


Sampling bias may arise when the distribution of some variables in the sample is not the same as the corresponding distribution in the population. The results in this survey are based on the information provided by those responding. Non-response is mainly due to the interviewee not wanting to participate or that he/she was not reached by the interviewer. If the interviewee was not reached due to he/she being on holiday, the distribution of this variable among those interviewed and the non-respondents may differ and sampling bias may arise.


The Travel survey is carried out among a sample of persons resident in Norway between 16 and 79 years of age. The uncertainty of findings based on only a part of the population, (sampling variance) depends among other factors on the number of observations in the sample and on the distribution of the current variable in the whole population. An estimate of this uncertainty (standard deviation) can be constructed by means of the observations in the sample. There is not made an exact calculation of the standard deviation for this survey.

Not relevant


Ane Margrete Tømmerås

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Statistics Norway's Information Centre

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