Westside is an area of the British overseas territory of Gibraltar. It lies between the western slopes of the Rock of Gibraltar and the eastern shores of the Bay of Gibraltar. In 2012, it was inhabited by 26,572 people and contained 78.15% of the territory's population of 34,000.
See also: Streets in Gibraltar. A network of narrow streets surround Main Street which runs north–south through the old town. Grand Casemates Square at the northern end of Main Street is the larger of the two main squares (the other being John Mackintosh Square). The Governor’s Residence is at the south end of Main Street.
The area includes six of the seven Major Residential Areas, with the seven (Eastside) comprising less than 2% of the total population.
| North District | 4,116 | 4,267 | |
| Reclamation Areas | 9,599 | 13,356 | |
| Sandpits Area | 2,207 | 2,053 | |
| South District | 4,257 | 5,681 | |
| Town Area | 3,588 | 3,264 | |
| Upper Town | 2,805 | 2,457 | |
| Total | 26,572 | 31,078 |
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