How large do you think the Muslim population is in your nearest city? Enter your estimate into the Channel 4 News survey below, and then find out the actual figure. (Northern Ireland not included due to lack of figures).
The Muslim population across England and Wales varies greatly from place to place. More rural locations such as West Somerset, the Forest of Dean and Ryedale all have a Muslim population of around 0.1 per cent.
Meanwhile, urban centres have higher proportions. The London boroughs of Tower Hamlets and Newham both have Muslim populations of higher than 30 per cent, figures from the 2011 census show.
Across the whole of England and Wales the Muslim population is 4.8 per cent.
Channel 4 News will update this page with results on Monday 13 January.