Penelitian ini bertujuan untuk mengkaji standar pelayanan minimum infrastruktur ekonomi dan sosial di perbatasan. Penelitian ini menggunakan metode analisis kuantitatif untuk mengevaluasi infrastruktur ekonomi dan sosial yang tersedia di perbatasan Kabupaten Nunukan dan Pulau Sebatik. Hasil penelitian menunjukkan bahwa standar pelayanan minimum infrastruktur ekonomi dan sosial di perbatasan terus mengalami perkembangan dan peningkatan. Nilai SPM rata-rata untuk infrastruktur ekonomi: jalan di Pulau Sebatik 56,3km/jiwa dan kabupaten Nunukan 61,4km/jiwa; listrik di Pulau Sebatik 68,8 % dan Kabupaten Nunukan 59%; air bersih di Pulau Sebatik 31,6% dan Kabupaten Nunukan 23%. Nilai (SPM) rata-rata untuk infrastruktur sosial: kesehatan di Pulau Sebatik untuk ibu hamil 89,7%, ibu bersalin 95,2%, bayi 88,6%, balita 66,1%, usia pendidikan dasar 49,6%, usia produktif 46,4%, usia lanjut 80,6%, hipertensi 68,9%, diabetes melitus 69,2%, orang dengan gangguan jiwa berat 97,2%, tuberkulosis 89,1%, orang dengan risiko hiv 75,4% dan Kabupaten Nunukan untuk ibu hamil 88,8%, ibu bersalin 95,2%, bayi 87,8%, balita 60,2%, usia pendidikan dasar 39,4%, usia produktif 30,4%, usia lanjut 69,2%, hipertensi 44,4%, diabetes melitus 56,2%, orang dengan gangguan jiwa berat 91,6%, tuberkolusis 85%, orang dengan risiko hiv 60,2%; pendidikan SD di pulau sebatik 75,2% dan kabupaten Nunukan 91,4%; pendidikan SMP di pulau sebatik 67,4% dan kabupaten Nunukan 50,8%; pendidikan SMA di pulau sebatik 79,6% dan kabupaten Nunukan 67,4%. Hal ini mempengaruhi potensi pengembangan ekonomi dan kesejahteraan masyarakat di wilayah perbatasan. Penelitian ini juga mengidentifikasi beberapa faktor kendala, termasuk kendala geografis, dan masalah pendanaan. Oleh karena itu, diperlukan upaya pemerintah untuk meningkatkan standar pelayanan minimum infrastruktur ekonomi dan sosial di perbatasan Kabupaten Nunukan. Hal ini dapat dilakukan melalui investasi infrastruktur, dan harmonisasi regulasi guna mendukung pembangunan wilayah perbatasan yang lebih baik.

Kata kunci: Perbatasan, Standar-pelayanan-minimum, Infrastruktur- ekonomi-sosial,Kesejahteraan

The purpose of the research was to assess the minimum service standards of quantitative analysis methods to evaluate the economic and social infrastructure available at the border of Nunukan Regency and Sebatik Island. The findings indicate ongoing progress in the enhancement of minimum service standards for economic and social infrastructure at the boundary. Average SPM scores for economic infrastructure indicated that Sebatik Island has 56.3 km of roads per electricity is 68.8% on Sebatik Island and 59% in Nunukan Regency. Sebatik Island capita, while Nunukan regency has 61.4 km of roads per capita. The percentage of has 31.6% of clean water, compared to 23% in Nunukan Regency. The Sebatik Island's social infrastructure has an average SPM score of 89.7% for pregnant women, 95.2% for birthing women, and 88.6% for infants. However, it drops to 66.1% for children under five and 49.6% for primary education, while productive age and elderly score 46.4% and 80.6% respectively. In terms of illnesses, hypertension and diabetes mellitus score 68.9% and 69.2%. Meanwhile, people with severe mental illness score 97.2%, tuberculosis 89.1%, and people at risk of HIV 75.4%. In Nunukan Regency, the numbers vary as pregnant women score 88.8%, delivery women 95.2%, and infants 87%. The prevalence rates for certain health conditions across various age groups are as follows: hypertension (44.4%), diabetes mellitus (56.2%), and tuberculosis (85%). People with severe mental disorders have a rate of 91.6%, while those with a high risk of HIV have a rate of 60.2%. In terms of age, the rates are as follows: 8% for infants, 60.2% for toddlers, 39.4% for primary school-aged children, 30.4% for adults in their productive years, and 69.2% for the elderly. In the Nunukan Regency, the rates for primary school education are 91.4% and 75.2% on Sebatik Island. The rates for junior high school education are 50.8% on the Nunukan Regency and 67.4% on Sebatik Island. Lastly, for senior high school education, the rates are 67.4% on the Nunukan Regency and 79.6% on Sebatik Island. This has implications for the economic growth and well- being of communities living in border areas. Additionally, the investigation revealed some limiting factors, such as geographic barriers and financial challenges. Therefore, it is necessary for the government to enhance the minimum service standards of economic and social infrastructure in the border areas of Nunukan Regency. It can be achieved by investing in infrastructure and maintaining regulations that promote the development of the border region. Keywords: Border, Minimum Service Standard, Socio Economic Infrastructure, Welfare