Median and mean age of the population

Population by age
Source: Census 2001
Publisher: Neighbourhood Statistics
Geographies: Output Area (OA), Lower Layer Super Output Area (LSOA), Middle Layer Super Output Area (MSOA), Ward, Local Authority District (LAD), Government Office Region (GOR), National
Geographic coverage: England and Wales
Time coverage: 2001
Type of data: Survey (census)
Notes: Age is derived from the date of birth question on the 2001 Census, and is the age at a person's last birthday. Dates of birth that imply an age over 110 were treated as invalid and the person's age was imputed.

人口按年龄分布
来源：2001年人口普查
出版机构：邻里统计数据
地理范围：输出区域（OA）、低层次次输出区域（LSOA）、中层次输出区域（MSOA）、地区、地方当局辖区（LAD）、政府办公室区域（GOR）、全国
地理覆盖范围：英格兰和威尔士
时间覆盖范围：2001年
数据类型：调查（普查）
备注：年龄数据来源于2001年普查中的出生日期问题，并指个人上一个生日时的年龄。对于暗示年龄超过110岁的出生日期被视为无效，并将个人的年龄进行估算。