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| Demographics of Belfast | |
|---|---|
Population pyramid of Belfast | |
| Population | 345,418 (2021) |
The city of Belfast is the provincial capital of Northern Ireland. The population of the Belfast Local Government District was 345,418 in 2021.

| Year | Pop. | ±% p.a. |
|---|---|---|
| 1757 | 8,549 | — |
| 1782 | 13,105 | +1.72% |
| 1791 | 18,320 | +3.79% |
| 1806 | 22,095 | +1.26% |
| 1821 | 37,277 | +3.55% |
| 1831 | 53,287 | +3.64% |
| 1841 | 75,308 | +3.52% |
| 1851 | 97,784 | +2.65% |
| 1861 | 119,393 | +2.02% |
| 1871 | 174,412 | +3.86% |
| 1881 | 208,122 | +1.78% |
| 1891 | 255,950 | +2.09% |
| 1901 | 349,180 | +3.15% |
| 1911 | 386,947 | +1.03% |
| 1926 | 415,151 | +0.47% |
| 1937 | 438,086 | +0.49% |
| 1951 | 443,671 | +0.09% |
| 1961 | 415,856 | −0.65% |
| 1966 | 398,405 | −0.85% |
| 1971 | 362,082 | −1.89% |
| 1981 | 314,270 | −1.41% |
| 1991 | 279,237 | −1.17% |
| 2001 | 277,391 | −0.07% |
| 2006 | 267,374 | −0.73% |
| 2011 | 286,000 | +1.36% |
| 2021 | 293,298 | +0.25% |
| [1][2][3][4][5][6][7] | ||
The total population of Belfast Local Government District was 345,418 in 2021, an increase of 3.5%.[8][9]
In 2021, 51% of the population was female while 49% was male.[8]

The age demographics of Belfast is different to the rest of the constituent country, 18% were aged 0 to 14, 37% aged 15 to 39, 30% aged 40 to 64 and 15% aged 65 and above.[8]


Belfast has become in recent decades an ethnically diverse city[clarification needed], although this ethnic diversity is not to the same scale as other cities across the United Kingdom. Previously, the city was exclusively white (categorised as a simplified ethnic group within Northern Ireland) at 98% white in 2001, however by 2021, this had dropped down to 93%.[8]
| Ethnic group | 2001[10] | 2011[11] | 2021[12][13] | |||
|---|---|---|---|---|---|---|
| Number | % | Number | % | Number | % | |
| White: Total | 324,775 | 98.8% | 323,090 | 96.8% | 321,666 | 93.1% |
| White | 324,475 | 98.7% | 322,813 | 96.7% | – | – |
| White: British/Irish/Northern Irish only (national identity) and Christian/no religion/religion not stated (religion) | – | – | – | – | 303,252 | 87.8% |
| White: Other | – | – | – | – | 17,801 | 5.2% |
| White: Irish Traveller/White Gypsy | 300 | 277 | 299 | |||
| White: Roma | – | – | – | – | 314 | |
| Asian or Asian British: Total | 2,181 | 0.6% | 7,208 | 2.2% | 12,908 | 3.7% |
| Asian/Asian British: Indian | 461 | – | 2,330 | 0.7% | 4,361 | 1.3% |
| Asian/Asian British: Pakistani | 187 | – | 258 | – | 492 | |
| Asian/Asian British: Bangladeshi | 68 | – | 210 | – | – | – |
| Asian/Asian British: Chinese | 1,383 | 0.4% | 2,378 | 0.7% | 4,738 | 1.4% |
| Asian/Asian British: Filipino | – | – | – | – | 1,637 | |
| Asian/Asian British: Asian Other | 82 | – | 2,032 | 0.6% | 1,680 | |
| Black or Black British: Total | 320 | – | 1,334 | 0.4% | 4,640 | 1.3% |
| Black or Black British: Caribbean | 67 | – | 95 | – | – | – |
| Black or Black British: African | 168 | – | 1,074 | 0.3% | 4,127 | 1.2% |
| Black or Black British: Other | 85 | – | 165 | – | 513 | |
| Mixed: Total | 837 | – | 1,599 | 0.5% | 4,159 | 1.2% |
| Other: Total | 504 | – | 640 | – | 2,046 | 0.6% |
| Other: Any other ethnic group | – | – | – | – | 1,032 | |
| Other: Arab | – | – | – | – | 1,014 | |
| Ethnic minority: Total | 3,842 | 1.2% | 10,781 | 3.2% | 23,753 | 6.9% |
| Total | 328,617 | 100% | 333,871 | 100% | 345,419 | 100% |
84% of Belfast was born within Northern Ireland, 4% within England, less than 1% for Scotland and Wales, 2% within the Republic of Ireland and 10% from other countries.[8]
43% of Belfast has a UK passport only, 29% has a Republic of Ireland passport only, 6% has both UK and RoI (Republic of Ireland) passports, 8% have other passports and 14% have no passport.[8]
Similarly to the trend across all of Northern Ireland, the Protestant population within the city has been in decline, while the non-religious, other religious and Catholic population has risen. In 2021, the proportion of residents who identified as Catholic was 43%, 12% Presbyterian, 8% for the Church of Ireland, 3% Methodist, 6% of Christian religions, 3% other religions and 24% no religion or not stated.[8]
In 2021 the largest identity group was 'Irish only' with 35% of the population. After this was; British only 27%, Northern Irish only 17%, British and Northern Irish only 7%, Irish and Northern Irish only 2%, British, Irish and Northern Irish only 2%, British and Irish less than 1% and Other identities with 10%.[8]