I’m making this post as the referendum details keeps being questioned in various discussions. Also to preserve the facts in case they disappear off the BBC website.

Most of the facts are thanks to the BBC website:
http://www.bbc.co.uk/news/politics/eu_referendum/results

Based on that I did a few additional calculations…but all facts!

Result

Electorate

Electorate: 46,501,241 (100%)
Turnout:  33,551,983 (72.2%)

Detailed Result

Based on Votes

Votes: 33,551,983 (100%)
Leave: 17,410,742 (51,9%)
Remain: 16,141,241 (48,1%)
Gap: 1,269,501 (3.78%)
Rejected: 26,033 (0.078%)

Based on Electorate (includes undecided)

Electorate: 46,501,241 (100%)
Leave: 17,410,742 (37.4%)
Remain: 16,141,241 (34.7%)
Gap: 1,269,501 (2.73%)
Did not vote: 12,949,258 (27.9%)
Rejected: 26,033 (0.056%)

Votes

England

England: 28,455,402 (100%)
Leave: 15,188,406 (53.4%)
Remain: 13,266,996 (46.6%)
Gap: 1,921,410 (6.75%)

Scotland

Scotland: 2,679,513 (100%)
Leave: 1,018,322 (38.0%)
Remain: 1,661,191 (62.0%%)
Gap: –642,869 (-24.0%)

Wales

Wales: 1,626,919 (100%)
Leave: 854,572 (52.5%)
Remain: 772,347 (47.5%)
Gap: 82,225 (5.05%)

Northern Ireland

Northern Ireland: 790,149 (100%)
Leave: 349,442 (44.2%)
Remain: 440,707 (55.8%)
Gap: -91,265 (11.6%)

Turnout

2016: 72.2%

1975: 64.6%

Historical Election Turnouts with EU referendum turnouts: