Guernsey's population reached 62,792 by the end of March 2019, increasing by an extra 459 people from the previous year.
The 0.7% rise is the highest percentage increase the island has seen since 2011.
By 2034, Guernsey's population is expected to reach a maximum of 64,000 people, before gradually falling to to 59,000 by 2065.
The most recent electronic census also shows employment figures for Guernsey, highlighting an overall decrease of 0.03% in the number of employed or self-employed people by the end of September 2019.
Women were recorded as earning £30,578 on average, compared to £37,124 for men.