This study examines the socio-economic consequences of women’s age at first childbirth in Osun State,
Nigeria. Cross-sectional survey of 1,000 women, of reproductive age (15-49 years), was made. The socioeconomic
backgrounds of the responding pre-childbirth family were reflected upon and observed that all the
respondents had similar pre-childbirth socio-economic background. The only discriminatory variable
separating the respondents into two groups was the timing of the first childbirth. The first group consisted of
500 women, who had their first childbirth under the age of 20. The second group consisted of 500 women,
who had their first childbirth at the age of 20 and above. Findings show significant direct relationship
between age at first childbirth and educational attainment at P<0.01. In addition to above the first childbirth
during adolescence had less or no chance to join school for further study. There is significant inverse
relationship between the age at first childbirth and marital stability at P<0.01. In conclusion, the women in
the States, who have their first childbirth as adolescent, are more likely to have poor socio-economic status at
adulthood than those who delay childbearing until their twenties.