Unmarried couples living together went mainstream after Scandinavia led
Cohabitation means partners share a home without legal marriage, usually in a long-term romantic bond. Western rates rose from the late twentieth century, with Scandinavia early and Mediterranean Europe climbing after the mid-1990s. Women's workforce gains and reliable contraception reduced economic dependence on husbands.
The word has carried this sense since at least 1530. In Portugal, where cohabitation stayed rare until the mid-1990s, most children have been born to unmarried parents since 2015, 60 percent of the total by 2021. After Communist governments fell around 1990, Central and Eastern Europe saw marriage decline and come later while cohabitation and births outside marriage rose, sometimes rapidly. Church attitudes have loosened too: Pope Francis has married cohabiting couples with children, and Rowan Williams and John Sentamu have voiced tolerance.
Sociologists fold the trend into the deinstitutionalization of marriage, alongside higher divorce rates, later first marriages and childbearing, and more births outside wedlock, and they list secularisation, individualism and shifting sexual ethics among the causes. American figures show the scale: about 450,000 cohabiting couples in 1960, 3.7 million in 1994 and 7.5 million in 2011. Galena Rhoades notes that living together before marriage was unusual before 1970 but involved at least half of couples by the late 1990s, and about 60 percent of marriages now begin that way.
Couples give practical reasons such as saving money, convenience, finding housing and testing compatibility, and in 1996 over three-quarters of cohabitors planned to marry. Where marriage is legally or religiously blocked, living together can be the substitute, and nine US states still allow common-law marriage, which helps a surviving partner inherit. A 2004 European Union directive bars member states from refusing entry to a citizen's partner in a durable, attested relationship. Early studies linked cohabiting households to poorer child outcomes, but research controlling for poverty, parental education and domestic violence finds those children develop much like comparable peers.
Source: Cohabitation