This brief has provided a basic profile of child marriage in Niger. Measures of child marriage are very high. The share of women ages 18-22 who married as children is 76.8 percent and it has not declined substantially over time. The share of girls marrying very early, before the age of 15, has declined more, but not rapidly either. Other measures of child marriage have declined only slowly as well over the last 25 years. Child marriage is associated with lower wealth, lower education levels, and higher labor force participation. These are however only correlations, not necessarily causal effects. Other briefs in this series look at potential causal effects.