In communities with an increased prevalence of hereditary deafness, social, and linguistic adaptations are found in response. Aulbers (1959) describes a high prevalence of deafness in a fishing village on the Dutch coast: Katwijk aan Zee. This article aims to assess the current prevalence of deafness in Katwijk, as well as the current sign language situation there. To this end, data were collected from various sources, including governmental studies on public health, archives, a genealogical database and interviews with deaf inhabitants of Katwijk. The various types of data confirm the presence of a higher prevalence of deafness in Katwijk that continues to date. Linguistic and anthropological research is needed to establish to what extent this has affected the experience and position of deaf people and their sign language usage in Katwijk.