The civil parish is formed by the village of Rimswell and the hamlet of Waxholme.
According to the 2011 UK census, Rimswell parish had a population of 235, an increase on the 2001 UK census figure of 198.
In 1823 Rimswell was in the parish of Owthorne, a village since lost to coastal erosion. Rimswell inhabitants numbered 129, and occupations included ten farmers, some of whom were land owners, a grocer, and the landlord of the Dog and Duck public house. A carrier operated between the village and Hull on Tuesdays.