Editing Omagh (section)

=== 2021 census ===
At the time of the [[2021 United Kingdom census|2021 census]], there were 20,458 people living in Omagh. Of these:
* 19.56% were aged under 16, 63.87% were aged between 16-65, and 16.57% were aged 66 and over.<ref>{{Cite web |title=Preview data for your table {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=AGE_BAND_AGG3&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref>
* 51.37% of the usually resident population were female and 48.63% were male.<ref>{{Cite web |title=Preview data for Sex (MS-A07) {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=UR_SEX&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref>
* 70.88% (14,500) belong to or were brought up in the Catholic, 22.91% (4,687) belong to or were brought up Protestant (including Christian denominations), 1.11% (228) belong to or were brought up in other religions and 5.1% (1,043) belong to no religion.<ref>{{cite web |title=Religion or religion brought up in |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=RELIGION_BELONG_TO_OR_BROUGHT_UP_IN_DVO&~SETTLEMENT15=N11000603 |website=NISRA |access-date=15 August 2023}}</ref>
* 43.24% had an Irish national identity,<ref>{{Cite web |title=Preview data for National Identity (Irish) {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=NAT_ID_IRISH_AGG3&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref>  32.62% had a Northern Irish national identity,<ref>{{Cite web |title=Preview data for National Identity (Northern Irish) {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=NAT_ID_NORTHERN_IRISH_AGG3&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref> 24.01% had a British national identity,<ref>{{Cite web |title=Preview data for National Identity (British) {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=NAT_ID_BRITISH&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref> and 11.02% had an 'other' national identity.<ref>{{Cite web |title=Preview data for National identity (person based) - basic detail (classification 1) (MS-B15) {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=NAT_ID_BASIC&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref> (respondents could indicate more than one national identity)
* 16.43% had some knowledge of [[Irish language|Irish]] (Gaeilge) and 5.61% had some knowledge of [[Ulster Scots dialect|Ulster Scots]].<ref>{{Cite web |title=Preview data for Knowledge of Irish (MS-B05) {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=IRISH_SKILLS_INTERMEDIATE&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref><ref>{{Cite web |title=Preview data for Knowledge of Ulster-Scots (MS-B08) {{!}} NISRA Flexible Table Builder |url=https://build.nisra.gov.uk/en/custom/viewdata?d=PEOPLE&v=SETTLEMENT15&v=ULSTER_SCOTS_SKILLS_INTERMEDIATE&~SETTLEMENT15=N11000603 |access-date=2024-03-28 |website=build.nisra.gov.uk}}</ref>