AbstractPrevious research has established that people who never marry have higher suicide rates and lower self‐reported subjective well‐being than the married. The present study examines how the differences between: (1) never married persons who live alone, (2) never married cohabitees; and (3) currently married people, vary between age groups. The relevance of such age variations for status integration theory and theories of marital selection is discussed. Summing up results from previous studies of suicide rates, the relative position of the never married is found to be most unfavourable for people in their 30s and 40s; the differences are smaller among the young and the old. Data on self‐reported well‐being are taken from a large‐scale survey of the population of one of Norway's 19 counties (n= 51 000), and are analysed by means of ordinary multiple regression. With regard to single people who were married or who never married, the results are largely consistent with the suicide findings; the advantage of marriage increases until about 40 years of age, then declines. The survey data also provide information about unmarried cohabitation, which seems to be more or less equivalent to marriage in most age groups. Neither status integration theory nor any other single theory of marriage effects or marital selection seems to be able to account for these findings in a satisfa