Trim is a town in County Meath, Ireland. It is situated on the River Boyne and has a population of 8,268. The town is noted for Trim Castle - the largest Cambro-Norman castle in Ireland. It was once the county town but today that honour belongs to Navan. One of the two cathedrals of the United Dioceses of Meath and Kildare — St Patrick's cathedral — is located north of the river. Trim won the Irish Tidy Towns Competition in 1972 and 1984 and was the joint winner with Ballyconnell in 1974.