Population of Ireland 1841-2011

When was the Census held?

Since the foundation of the State, the Irish census has traditionally been held on a Sunday in April of a year ending with the number 6 and, since 1951, years ending with the numbers 1 and 6. The few exceptions to this were a May census in 1946, the cancellation of the 1976 and postponement of the 2001 census. The actual dates for each census are as follows:

Year Census Day
1926 Sunday, 18 April 1926
1936 Sunday, 26 April 1936
1946 Sunday, 12 May 1946
1951 Sunday, 8 April 1951
1956 Sunday, 8 April 1956
1961 Sunday, 9 April 1961
1966 Sunday, 17 April 1966
1971 Sunday, 18 April 1971
1979 Sunday, 1 April 1979
1981 Sunday, 5 April 1981
1986 Sunday, 13 April 1986
1991 Sunday, 21 April 1991
1996 Sunday, 28 April 1996
2002 Sunday, 28 April 2002
2006 Sunday, 23 April 2006
2011 Sunday, 10 April 2011
2016 Sunday, 24 April 2016

 

What was the population in each census?

Year Total Population Males Females No. Of females per 100 males
1841 6,528,799 3,222,485 3,306,314 103
1851 5,111,557 2,494,478 2,617,079 105
1861 4,402,111 2,169,042 2,233,069 103
1871 4,053,187 1,992,468 2,060,719 103
1881 3,870,020 1,912,438 1,957,582 102
1891 3,468,694 1,728,601 1,740,093 101
1901 3,221,823 1,610,085 1,611,738 100
1911 3,139,688 1,589,509 1,550,179 98
1926 2,971,992 1,506,889 1,465,103 97
1936 2,968,420 1,520,454 1,447,966 95
1946 2,955,107 1,494,877 1,460,230 98
1951 2,960,593 1,506,597 1,453,996 97
1956 2,898,264 1,462,928 1,435,336 98
1961 2,818,341 1,416,549 1,401,792 99
1966 2,884,002 1,449,032 1,434,970 99
1971 2,978,248 1,495,760 1,482,488 99
1979 3,368,217 1,693,272 1,674,945 99
1981 3,443,405 1,729,354 1,714,051 99
1986 3,540,643 1,769,690 1,770,953 100
1991 3,525,719 1,753,418 1,772,301 101
1996 3,626,087 1,800,232 1,825,855 101
2002 3,917,203 1,946,164 1,971,039 101
2006 4,239,848 2,121,171 2,118,677 100
2011 4,588,252 2,272,699 2,315,553 102

 

Population by province (Thousands)

Year Total Population Leinster Munster Connacht Ulster (Part)
1841 6,528.8  1,973.7  2,396.2  1,418.9  740.0
1851 5,111.6  1,672.7  1,857.7  1,010.0  571.1
1861 4,402.1  1,457.6  1,513.6  913.1  517.8
1871 4,053.2  1,339.5  1,393.5  846.2  474.0
1881 3,870.0  1,279.0  1,331.1  821.7  438.3
1891 3,468.7  1,187.8  1,172.4  724.8  383.8
1901 3,221.8  1,152.8  1,076.2  646.9  345.9
1911 3,139.7  1,162.0  1,035.5  611.0  331.2
1926 2,972.0  1,149.1  969.9  552.9  300.1
1936 2,968.4  1,220.4  942.3  525.5  280.3
1946 2,955.1  1,281.1  917.3  492.8  263.9
1951 2,960.6  1,336.6  898.9  471.9  253.3
1956 2,893.3  1,338.9  877.2  446.2  235.9
1961 2,818.3  1,332.1  849.2  419.5  217.5
1966 2,884.0  1,414.4  859.3  402.2  208.3
1971 2,978.2  1,498.1  882.0  390.9  207.2
1979 3,368.2  1,743.9  979.8  418.5  226.0
1981  3,443.3  1,790.5  998.3  424.4  230.2
1986  3,540.6  1,852.6  1,020.6  431.4  236.0
1991  3,525.7  1,860.9  1,009.5  423.0  232.2
1996  3,626.1  1,924.7  1,033.9  433.2  234.3
2002  3,917.2  2,105.6  1,100.6  464.3  246.7
2006  4,239.8  2,295.1  1,173.3  504.1  267.3
2011  4,588.2 2,504.8 1,246.1 542.5 294.8