AbstractThis study explores Greece's unique position as the country with the lowest nonmarital childbearing rate in Europe. The socio‐demographic profile of mothers is being analysed in three categories of marital status: married, unmarried, and in civil partnership. Unpublished data, custom‐made exclusively for this study from the Hellenic Statistical Authority (ELSTAT), have been used, spanning from 2019 to 2021. Key focus areas include maternal age at childbirth, educational attainment, and nationality (Greek, EU27 except for Greek, and non‐EU). Geographical analysis is conducted at the Regional Unit level (Nomenclature of territorial units for statistics [NUTS] 3 classification). Findings reveal that Greek teenage and early twenties mothers, as well as those with low educational level, are more likely to be unwed, implying that maternity might have come because of an unplanned pregnancy. On the other hand, those in civil partnerships resemble married mothers in age and educational attainment. Non‐Greek nationals show a higher prevalence of nonmarital births, and a sociodemographic profile that implies that unwed maternity constitutes a conscious choice for them. This study not only illuminates the characteristics of unwed mothers in Greece but also provides empirical insights for evaluating prevailing theoretical frameworks regarding family dynamics in countries facing low fertility rates.