Percentage of the population self-identifying as Welsh: 14.39% (controversially there was no question on the Census form asking this -- people had to write this in).
Religion:
Christian: 71.9%
Buddhist: 0.19%
Hindu: 0.19%
Jewish: 0.08%
Muslim: 0.75%
Sîkh: 0.07%
Other religion: 0.24%
No religion: 18.53%
Not disclosed: 8.07%
Age structure of the population:
0-4: 167,903
5-7: 108,149
8-9: 77,176
10-14: 195,976
15: 37,951
16-17: 75,234
18-19: 71,519
20-24: 169,493
25-29: 166,348
30-44: 605,962
45-59: 569,676
60-64: 152,924
65-74: 264,191
75-84: 182,202
85-89: 38,977
90+: 19,404
Knowledge of the Welsh language:
Percentage of the population aged 3 or more knowing spoken Welsh only: 4.93%
Percentage of the population aged 3 or more speaking Welsh but not reading or writing it: 2.83%
Percentage of the population aged 3 or more speaking and reading Welsh but not writing it: 1.37%
Percentage of the population aged 3 or more speaking, reading, and writing Welsh: 16.32%
Percentage of the population aged 3 or more with some other skills combination: 2.98%
Percentage of the population aged 3 or more with no knowledge of Welsh: 71.57%