The parish of Sculcoates was situated on the west bank of the River Hull with the town of Hull to the south and the parish of Cottingham to the north and west. The boundary followed the River Hull to the east and the town walls (later Queens Dock and now Queens Gardens) to the south. It then continued in a north-westerly direction along the line of the Derringham Dike (now Prospect Street) and Derringham Bank (now Spring Bank) and north along what became Newland Tofts Lane (now Princes Avenue). It continued along the line of the Setting Dike (now Queens Road), travelling eastwards to join Beverley Road. From here it took a north-westerly course along field boundaries to meet the River Hull at Stoneferry. If you look at a modern map of Hull, you will see that it includes part of what is now the city centre - Albion Street, George Street etc.

Also included in this area was a small portion in the south east corner of the parish, between the Charterhouse and the town walls, called Trippett. The town of Hull had certain rights here and it was described as being in both the parishes of Holy Trinity and also St Mary (Hull) at different times in its history, but it did not become part of the borough until 1837. Trippett was never in the parish of Sculcoates.