Collace is a small parish, which lies in Perth and Kinross Council Area, some 7 miles (12 km) northeast of Perth and 8 miles (13 km) south of Blairgowrie in Perth and Kinross.
It is located in the old county of Perthshire, which disappeared following the Local Government (Scotland) Act 1974.
The parish has an area of 14.1 sq. km (5.4 sq. miles). Collace has 5 neighbouring parishes; namely Abernyte, Cargill, Kilspindie, Kinnaird and St Martins. The boundaries of this parish were modified among significant changes recommended by the Boundary Commissioners after the Local Government (Scotland) Act 1889.