File:SA Postcode Area Map.svg
Indicative postcode districts shown in red, post towns shown in grey.
Equirectangular projection with latitude stretching 160%, WGS84 datum.
Geographic limits:
- Main 1:497,000 map:
- West: 5.401W
- East: 3.497W
- North: 52.309N
- South: 51.476N
Derived from Ordnance Survey OS OpenData.
- Postcode district boundaries within Great Britain derived from Voronoi polygons of OS Code-Point Open unit postcode median coordinates (with coastline clipping and minor adjustments to avoid spurious detached polygons).
- Great Britain coastline, inland water and urban extent data derived from OS Strategi.