Purpose: The concept of security is related to the experience of health but has ever so often been argued from a risk perspective rather than from a promotional perspective. The experience of older persons’ sense of security in private homes and in nursing homes seems to be missing when it comes to promote aging well throughout the life span. This study aimed to describe and analyze factors related to the sense of security of older persons receiving care in nursing homes in Sweden. Design and Methods: The study was based on a questionnaire from a total of 495 persons aged ≥ 65 in private homes (n = 350) or nursing homes (n = 145) in Sweden. Results: Secure relationships, sense of control, and perceived health were significantly related to the subjects’ sense of security. No significant relationships were found between sense of security and having a personal emergency response alarm. Implications: Experience of sense of security from the older person perspective differs depending on the context. To promote the sense of security within the care of older persons, methods on how to establish secure relations as well as the sense of control and knowledge need to be further tested, developed and analyzed together with older persons.