Family life around the world is changing in remarkable ways. In many societies, marriage was once considered the essential foundation for raising children.
Today, however, cultural norms, economic realities, and progressive juridical frameworks have altered this expectation.
In several nations, having children outside of marriage has become not only common but, in some cases, the majority practice. Here’s a look at the countries where babies are most often born outside wedlock, based on the latest OECD data.
Colombia – 87%
Cohabitation has strong historical roots, and the law grants cohabiting couples rights similar to those of married couples, making this the dominant family structure.
Chile – 78.1%
With religious influence declining sharply, pragmatic concerns have made cohabitation the most popular option for most parents.
Costa Rica – 74%
Often viewed as optional, marriage is treated more as a celebration than a requirement for parenthood, making unmarried parenthood mainstream.
Mexico – 73.7%
Thanks to the legal recognition of concubinato (domestic partnerships), cohabiting couples enjoy rights that reduce the need for marriage.
Iceland – 69.4%
Because of strong welfare support, marriage offers no considerable legal or financial advantages, so cohabitation is the norm.
Norway – 61.2%
Progressive laws grant unmarried partners nearly identical rights to married couples, normalising cohabitation.
Bulgaria – 59.7%
Integration with European norms has weakened old stigmas and made unmarried parenthood increasingly common.
Portugal – 59.5%
Through statutory reforms, rights are granted to unmarried couples, erasing most practical differences between marriage and cohabitation.
France – 58.5%
Chosen widely by couples, civil solidarity pacts (PACS) are a popular alternative to traditional weddings.
Sweden – 57.5%
Emphasising autonomy and comprehensive welfare protections, Swedish culture makes marriage unnecessary for family stability.
Slovenia – 56.5%
Young people often prioritise education, careers, and homeownership over marriage, and they may raise children in cohabiting relationships.
Estonia – 53.8%
As secular attitudes predominate, legal protections for cohabiting partners make unmarried parenthood common.
Belgium – 52.4%
Multicultural influences, especially in Brussels, normalise diverse family arrangements outside marriage.
Spain – 50%
Just decades ago, a dramatic shift from established customs saw half of all births now occur outside marriage.
Finland – 48.4%
With a focus on child welfare rather than parents’ marital status, policies grant rights to cohabiting couples.
United Kingdom – 47.6%
Rising housing and wedding costs push couples to prioritise family life over formal marriage.
Czech Republic – 47.1%
Supported by a secular culture and strong social safety nets, families thrive regardless of marital status.
Netherlands – 42.1%
Dutch law recognises diverse family arrangements, balancing tolerance with lingering conservative influences.
Slovak Republic – 41.6%
In reaction to economic factors, couples often pool resources for child-rearing before marriage.
Italy – 40.5%
Modern Italian society increasingly accepts unmarried parenthood, despite Catholic traditions and regional differences.
Austria – 40%
Strong labour laws and healthcare make raising children outside marriage viable, especially in urban areas.
United States – 40%
Throughout regions, cultures, and classes, attitudes may vary, but unmarried parenthood is widely accepted.
Australia – 39.9%
De facto partnerships are legally recognised, and high housing costs influence couples to delay weddings.
Luxembourg – 39%
A strong economy and strong social services reduce pressure to marry, supporting diverse household structures.
Ireland – 38.4%
As religious influence fades, secular views on family and parenthood take precedence.
Latvia – 37.3%
Following the transition to a modern economy, cohabitation and single parenthood have become more common.
Romania – 33.9%
Orthodox traditions remain strong, but in urban areas, cohabitation rates are rising.
Germany – 33.1%
Equal support from the welfare system allows all family types to thrive, making marriage less central to parenthood.
