Background: Hypertension is a common degenerative condition among older adults and is frequently under-recognized because of its typically asymptomatic course. Adequate knowledge is a prerequisite for effective self-management and preventive behavior, yet many community-dwelling older adults in Indonesia have limited understanding of the condition. This study aimed to describe the level of knowledge about hypertension among older adults in Kelurahan Tinoor Satu, within the working area of Tinoor Community Health Center, Tomohon City, Indonesia, together with their sociodemographic profile of age, sex, and educational attainment. Methods: A descriptive quantitative design with a cross-sectional approach was used. A purposive sample of 103 older adults was drawn from a population of 138 residents. Data were collected using a modified 28-item closed-ended questionnaire, adapted from Aspuah (2013), scored on a Guttman scale and categorized as good (18-28 correct), sufficient (9-17), or poor (0-8) knowledge, then analyzed univariately using frequencies and percentages. Ethical approval was obtained from the Health Research Ethics Committee of STIKes Bethesda Tomohon.Results: Most respondents were aged 60-74 years (76.7%), female (57.3%), and had completed only primary school (48.5%). Regarding knowledge, 75.7% had sufficient knowledge, 20.4% had good knowledge, and 3.9% had poor knowledge about hypertension.Conclusion: Knowledge about hypertension among older adults in this community was predominantly sufficient, coinciding with a generally low educational profile. These findings indicate a continuing need for structured, literacy-appropriate health education delivered through community health programs, such as the elderly integrated health post, to improve hypertension-related knowledge in this population