In 2024, almost one in five young women were married before their 18th birthday worldwide. Sub-Saharan Africa had the largest share of girls married before the age of 18, but also the largest share of girls married before 15 (9.4 percent).

Niger has the highest child marriage rate in the world among girls. According to the most recent data, in this West African country, more than three-fourths of girls aged under 18 were married, with nearly 30 percent of them being younger than 15 years old. The Central African Republic, Chad, and Mali followed behind with rates ranging from 61 to 54 percent. This issue is globally spread, particularly in African countries. In many of these countries, the legal age to get married is lower for females than for males. In Niger and Chad, for instance, the legal age is 15 years for females and 18 for males. In Guinea, instead, the legal age for marriage is 17 for females and 18 for males. Child marriage is often related to poverty, with poor families choosing to marry away their girls, both to earn money as a wedding gift and as this means fewer mouths to feed.

As of 2025, Sri Lanka had the lowest divorce rate in the world, with 0.15 divorces per 1,000 population. Vietnam and Guatemala followed with 0.2 divorces per 1,000 inhabitants.

The number of girls at risk of child marriage is expected to increase globally due to the coronavirus (COVID-19) pandemic. In West and Central Africa, additional 450 thousand girls will risk child marriage between 2020 and 2025, according to estimates. Moreover, in East and Southern Africa, child marriage would concern 158 thousand girls more compared to estimates conducted before the pandemic. In Africa, the outbreak also led to increased poverty.

In 2023, there were about 15.09 million children living with a single mother in the United States, and about 3.05 million children living with a single father. The number of children living with a single mother is down from its peak in 2012, and the number of children living with a single father is down from its peak in 2005.

Marriage and divorce in the United States

Despite popular opinion in the United States that “half of all marriages end in divorce,” the divorce rate in the U.S. has fallen significantly since 1992. The marriage rate, which has also been decreasing since the 1990s, was still higher than the divorce rate in 2021. Half of all marriages may not end in divorce, but it does seem that fewer people are choosing to get married in the first place.

New family structures

In addition to a falling marriage rate, fewer people in the U.S. have children under the age of 18 living in the house in comparison to 1970. Over the past decade, the share of families with children under 18, whether that be married couples or single parents, has stayed mostly steady, although the number of births in the U.S. has also fallen.

In 2022, the divorce rate in the United States stood at *** per 1,000 of the population. Divorce in the U.S. Divorce is the termination of a marital union. In the United States, as in most other countries, it is a legal process in which a judge or another legal authority dissolves the bonds of matrimony existing between two persons. The process of divorce also normally involves issues surrounding distribution of property, financial support of the former spouse, child custody and child support. A divorce also allows a person to marry again.In the United States, divorce is, like marriage, a matter for state governments, not the federal government. Although divorce laws vary from state to state, for example on which terms a divorce can be arranged, a divorce must be certified by a court of law to become effective. A declining divorce rate Over the last couple of years, both the marriage rate and the divorce rate have been declining in the United States. As of 2009, the average length of a first marriage in the U.S. was ***** years, while the average length of a second marriage was about ** years.

Portugal was the European country with the highest divorce rate in 2020, counting almost 92 divorces per 100 marriages. However, in 2023, the divorce-marriage ratio decreased to 47 percent. In 2020, the ratio peaked because of the drop in marriages during the coronavirus (COVID-19) related lockdown. Pandemic years registered the lowest numbers of marriages and divorces since 2010 Until 2019, the annual divorce rate in Portugal had been relatively stable at around two divorces per 1,000 residents. Nevertheless, during the coronavirus (COVID-19) pandemic, the lowest divorce rate so far was recorded at 1.7, which may be explained by the restrictions imposed by lockdowns and the delays in administrative and bureaucratic services. Still, and due to the same reasons, the number of marriages also suffered a steep decline in 2020 to around 18,900, more than doubling in 2022 and surpassing 2011 figures. First marriages and motherhood occur later in life in Portugal The mean age on first marriage of both men and women in Portugal has been increasing at an almost constant pace for years. 2021 marked an inversion of this tendency, with the mean age of men when marrying for the first time decreasing to 34.3 years of age and the mean age of women decreasing to 32.9 years. However, the rising trend in age was quickly reestablished, as 2022 recorded the highest mean age on first marriage for both sexes. Under the same inclination is the average age of women when giving birth to their first child, which was at 30.9 years in 2021, increasing two years of age in relation to 2010.

The typical American picture of a family with 2.5 kids might not be as relevant as it once was: In 2023, there was an average of 1.94 children under 18 per family in the United States. This is a decrease from 2.33 children under 18 per family in 1960.

Familial structure in the United States

If there’s one thing the United States is known for, it’s diversity. Whether this is diversity in ethnicity, culture, or family structure, there is something for everyone in the U.S. Two-parent households in the U.S. are declining, and the number of families with no children are increasing. The number of families with children has stayed more or less constant since 2000.

Adoptions in the U.S.

Families in the U.S. don’t necessarily consist of parents and their own biological children. In 2021, around 35,940 children were adopted by married couples, and 13,307 children were adopted by single women.