a    Including Ascension and Tristan da Cunha. For statistical purposes, the data for United Kingdom do not include this area.
b    Projected estimate (medium fertility variant).
c    St. Helena Island has no substantial natural inland waters however there are 15 reservoirs and similar open water storage features on island.
d    Including Ascension and Tristan da Cunha.
e    2019
f    2018
g    Population aged 15 to 69 years.
h    Data classified according to ISIC Rev. 3.
i    2008
j    Estimate.
k    2020
l    Data refers to a 5-year period preceding the reference year.
m    Refers to foreign citizens.
n    2009
o    2012