The Wiltshire Council Unitary Authority's population as of mid-year 2017 was 496,043.

Wiltshire Council Unitary Authority's population is projected to rise to 526,200 in 2027.

The proportion of the population 65 and over in Wiltshire is larger than in England (20.9% compared to 18.0%) and it is likely to rise
faster than England over the coming years.