Unmet need or the unful lled need for contraception is often associated with two things, namely supply and demand. This research attempted to overview the concept of unmet need by giving the attention to the socio-economic background of the couples. Through analizing the result of family survey in Daerah Istimewa Yogyakarta (DIY) and interviewing the eld surveyor of family planning (Petugas Lapangan Keluarga Berencana-PLKB) and women that categorized as unmet need, this research found that the numet need concept still needed to be explored further, especially when unmet need was used as the performance indicator in DIY. It related to the evidance that unmet need did not always end up with pregnancy.