The following table shows the population in prison establishments in England and Wales as at the end of June 2006, broken down by gender and age band:
Total Males Females All ages 63,493 59,981 3,512 15-17 1,865 1,814 50 18-20 5,992 5,720 272 21-24 10,176 9,624 552 25-29 12,069 11,361 708 30-39 17,945 16,851 1,094 40-49 9,975 9,368 606 50-59 3,706 3,517 189 60 and over 1,765 1,725 40
The table is taken from table 8.6 in the Offender Management Caseload Statistics 2006, a copy of which can be found in the House of Commons Library and which can be found at the following website:
http://www.justice.gov.uk/publications/prisonandprobation.htm
These figures have been drawn from administrative IT systems, which, as with any large scale recording system, are subject to possible errors with data entry and processing.