AbstractBackgroundSocial networks provide benefits to older adults, including some positive impact on cognitive health. Immigrant older adults with limited English proficiency in the United States (US) may experience the disruption of social network change resulting from their relocation compounded with language barriers. Despite the central role of social networks in older adults’ cognitive function, little information is available about actual social network size among immigrant older adults in the US and how social network sizes are associated with their cognitive status.MethodKorean American (KA) older adults represent one of the fastest growing, yet some of the most vulnerable groups in the US due to their limited English proficiency. PLAN—Preparing health aging through Dementia literacy And Navigation—is an ongoing, multi‐site clinical trial involving KA older adults (65+ years) with probable dementia with a goal of promoting their linkage to dementia care. Potential participants go through cognitive screening using Mini‐Mental State Exam (MMSE) to confirm eligibility. Part of the screening process involves a survey about social network using Lubben Social Network Scale‐6 as availability of a caregiver is part of eligibility criteria. Using eligibility screening data, we investigated social network among community‐dwelling KA older adults and its association with MMSE status after controlling for age, sex, and education.ResultA total of 747 KA older adults (mean age = 77 years, 28% male, and 61% ≤high school) were included in the analysis. More than one third (35%) of the sample had a score <12 on the Lubben scale, indicating being “at risk for social isolation.” Logistic regression analysis revealed that KA older adults who were at risk for social isolation had more than twice higher odds (adjusted odds ratio = 2.007, p = 0.002) of being MMSE positive (i.e., cognitive decline) than those who were not, after controlling for age, sex, and education.ConclusionSocial network analyses have potential to present much needed information in relation to older adults’ health status. Our findings suggest the urgent need for social support resources in this socially disadvantaged group of immigrant older adults. Future research should investigate effective strategies to enable access to the resources of wellness in the population.