Unmet need Keluarga Berencana (KB) masih menjadi tantangan kesehatan reproduksi di Indonesia karena berkontribusi terhadap kehamilan tidak direncanakan, kematian ibu, dan berbagai dampak kesehatan lainnya. Permasalahan tersebut semakin kompleks pada WUS Generasi Z yang telah menikah akibat keterbatasan akses informasi dan ketakutan terhadap efek samping kontrasepsi. Penelitian ini bertujuan mengetahui gambaran kejadian unmet need KB dan menganalisis faktor-faktor yang berhubungan dengan unmet need KB pada WUS Generasi Z yang telah kawin di Kota Depok. Penelitian ini menggunakan desain cross-sectional menggunakan data primer yang dikumpulkan pada April 2026. Sampel berjumlah 135 WUS Generasi Z (15–27 tahun) yang telah kawin dan dipilih menggunakan mixed sampling design, yaitu pemilihan kecamatan secara purposif dan pemilihan klaster secara bertahap (multistage cluster random sampling). Analisis data meliputi analisis univariat dan analisis bivariat menggunakan uji Chi-Square atau Fisher's Exact Test dengan tingkat kepercayaan 95%. Hasil penelitian menunjukkan bahwa prevalensi unmet need KB sebesar 27,4%, lebih tinggi dibandingkan hasil analisis SDKI 2017 pada perempuan muda yang telah menikah (9,3%), capaian nasional tahun 2023 (11,5%), maupun target Renstra Kemendukbangga/BKKBN 2025–2029 sebesar 10,0%. Kebutuhan KB yang belum terpenuhi didominasi oleh unmet need untuk penjarangan kehamilan (spacing) sebesar 17,0%. Dari seluruh variabel yang dianalisis, hanya paparan petugas kesehatan yang berhubungan signifikan dengan kejadian unmet need KB (p-value=0,041), sedangkan usia, status pekerjaan, tingkat pendidikan, tingkat ekonomi, jumlah anak hidup, jumlah anak ideal, dan paparan media massa tidak menunjukkan hubungan yang signifikan. Penelitian ini menyimpulkan bahwa unmet need KB pada WUS Generasi Z di Kota Depok masih tergolong tinggi dan didominasi oleh kebutuhan penjarangan kehamilan. Penguatan Komunikasi, Informasi, dan Edukasi (KIE), peningkatan kualitas konseling kontrasepsi oleh tenaga kesehatan, promosi Metode Kontrasepsi Jangka Panjang (MKJP), serta pengembangan sistem informasi keluarga berencana yang terintegrasi perlu dioptimalkan untuk menurunkan unmet need KB pada Generasi Z

Unmet need for family planning (FP) remains a major reproductive health challenge in Indonesia because it contributes to unintended pregnancies, maternal mortality, and various adverse health outcomes. This issue is particularly pronounced among married Generation Z women of reproductive age (WRA) due to limited access to information and concerns about contraceptive side effects. This study aimed to describe the prevalence of unmet need for family planning and to analyze factors associated with unmet need for family planning among married Generation Z women of reproductive age in Depok City. This study employed a cross-sectional design using primary data collected in April 2026. A total of 135 married Generation Z women of reproductive age (15–27 years) were selected using a mixed sampling design, consisting of purposive selection of subdistricts followed by multistage cluster random sampling. Data were analyzed using univariate and bivariate analyses. The bivariate analysis employed the Chi-square test or Fisher's Exact Test with a 95% confidence level. The results showed that the prevalence of unmet need for family planning was 27.4%, which was higher than the prevalence reported in the 2017 Indonesia Demographic and Health Survey (IDHS) among married young women (9.3%), the national prevalence in 2023 (11.5%), and the 2025–2029 Strategic Plan target of the Ministry of Population and Family Development/National Population and Family Planning Board (10.0%). Unmet need was predominantly attributed to the need for birth spacing (17.0%). Among all variables examined, only exposure to family planning information provided by health workers was significantly associated with unmet need for family planning (p-value=0.041). In contrast, age, employment status, educational level, economic status, number of living children, ideal number of children, and exposure to mass media were not significantly associated with unmet need for family planning. In conclusion, the prevalence of unmet need for family planning among Generation Z women of reproductive age in Depok City remains high and is predominantly related to the need for birth spacing. Strengthening family planning communication and education, improving the quality of contraceptive counseling provided by health workers, promoting Long-Acting Reversible Contraceptive Methods (LARCs), and developing an integrated family planning information system should be optimized to reduce unmet need for family planning among Generation Z