# Castlereagh South F2

North east Lisburn and Castlereagh. 921 people (mid-2024 estimate) in 5.5 square kilometres.

Castlereagh South F2 had 840 usual residents at the census (NISRA Census 2021).

Neighbourhood. Code N20002484. In: [Northern Ireland](https://openindex.co.uk/northern-ireland) › [Lisburn and Castlereagh](https://openindex.co.uk/lisburn-and-castlereagh)

## Key figures

- **Population: 840** (2021). Castlereagh South F2 had 840 usual residents at the census (NISRA Census 2021). Joint 9,117th least populated of 46,844. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002484#f-population
- **Gigabit broadband coverage: 88.6%** (January 2026). In Castlereagh South F2, 88.6% of homes and businesses could get gigabit-capable broadband in January 2026 (Ofcom). UK 87.8%. Source: Connected Nations (Ofcom), January 2026. Published 13 May 2026. https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002484#f-gigabit-coverage
- **Aged 15 to 64: 65.5%** (2021). 65.5% of residents in Castlereagh South F2 were aged 15 to 64 at the census (NISRA Census 2021). Joint 16,056th highest of 46,844. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002484#f-age-15-to-64
- **Aged 65 and over: 19.4%** (2021). 19.4% of residents in Castlereagh South F2 were aged 65 or over at the census (NISRA Census 2021). Joint 21,675th highest of 46,844. Source: Census 2021, England and Wales and Scotland's Census 2022 and Census 2021, Northern Ireland, 2021. Published 21 July 2026. https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002484#f-age-65-and-over

## On the map

- [Gigabit coverage by neighbourhood](https://openindex.co.uk/map/gigabit-broadband#place=N20002484) (Connected Nations (Ofcom) · January 2026): In Castlereagh South F2, 88.6% of homes and businesses could get gigabit-capable broadband in January 2026.
- [Average house price by council](https://openindex.co.uk/map/house-prices#place=N20002484) (UK House Price Index · August 2026): Published for whole councils, so the map colours all of Lisburn and Castlereagh. The outline is Castlereagh South F2.
- [Crime and ASB by neighbourhood](https://openindex.co.uk/map/recorded-crime#place=N20002484) (Police recorded crime and outcomes (data.police.uk) · August 2026): Police recorded 7 crimes and anti-social behaviour incidents in Castlereagh South F2 in August 2026.
- [Population by neighbourhood](https://openindex.co.uk/map/population#place=N20002484) (Census 2021, England and Wales): Castlereagh South F2 had 840 usual residents at the census.

Northern Ireland Multiple Deprivation Measure 2017 is published for the Super Output Areas (2001), whose boundaries differ from this neighbourhood’s, so it has no figure for Castlereagh South F2. [See deprivation across Lisburn and Castlereagh](https://openindex.co.uk/lisburn-and-castlereagh/deprivation)

## How Castlereagh South F2 compares

Each neighbourhood against every other neighbourhood the measure covers.

| Measure | Castlereagh South F2 | Rank | Compared with |
| --- | --- | --- | --- |
| Population | 840 | joint 6th most populated | 296 neighbourhoods, Lisburn and Castlereagh · 2021 |
| Gigabit broadband coverage | 88.6% | 21st lowest | 296 neighbourhoods, Lisburn and Castlereagh · Jan 2026 |
| Aged 15 to 64 | 65.5% | joint 106th highest | 296 neighbourhoods, Lisburn and Castlereagh · 2021 |
| Aged 65 and over | 19.4% | joint 128th highest | 296 neighbourhoods, Lisburn and Castlereagh · 2021 |

## Is Castlereagh South F2 safe? What police records show

In the 12 months to August 2026, police recorded crimes and anti-social behaviour in Castlereagh South F2 at a rate of 102.1 per 1,000 people.
That compares with 64.7 per 1,000 people across Castlereagh South F.
Across Northern Ireland as a whole, the recorded crime rate was 70.2 per 1,000 people.
In August 2026 alone, 7 cases of crime and anti-social behaviour were recorded in Castlereagh South F2.
In the 12 months to August 2026, the most common types were violence and sexual offences (37), anti-social behaviour (17) and other crime (12).
Worked out by Open Index from police.uk crime records and ONS and NISRA population estimates.
Rates are per resident, so places that many people work in or visit, such as Westminster, the City of London and other city centres, have far higher rates than their residents alone would suggest.

## Figures for the whole of Lisburn and Castlereagh

These figures are published for the whole of Lisburn and Castlereagh, not for each neighbourhood, so they describe all of Lisburn and Castlereagh and not Castlereagh South F2 alone. [See Lisburn and Castlereagh](https://openindex.co.uk/lisburn-and-castlereagh)

- **Average house price: £240,737** (August 2026). Lisburn and Castlereagh’s average house price was £240,737 in August 2026 (HM Land Registry). Up 9.7% in a year. Source: UK House Price Index, August 2026. Published 21 October 2026.
- **Population estimate: 152,367** (2025). Lisburn and Castlereagh’s population was an estimated 152,367 in mid-2025 (ONS population estimates). Up 0.5% in a year. Source: Mid-year population estimates, 2025. Published 1 October 2026.
- **Female life expectancy: 83.8 years** (2022 to 2024). A baby girl born in Lisburn and Castlereagh could expect to live 83.8 years, based on deaths in 2022 to 2024 (ONS life expectancy). UK 83.0 years. Source: Life expectancy for local areas of the UK, 2022 to 2024. Published 10 December 2025.
- **People in radon Affected Area squares: 32%** (2022). About 32% of people in Lisburn and Castlereagh live in a 1 km square that the radon atlas marks as a radon Affected Area. UK 44%. Source: Worked out by Open Index from the UKHSA and BGS radon atlas and census output areas. Published 1 December 2022.

## Castlereagh South F2 in brief

Castlereagh South F2 had 840 usual residents at the census.
In Castlereagh South F2, 88.6% of homes and businesses could get gigabit-capable broadband in January 2026.
65.5% of residents in Castlereagh South F2 were aged 15 to 64 at the census.
19.4% of residents in Castlereagh South F2 were aged 65 or over at the census.

## About

- Type: Neighbourhood
- Code: N20002484
- Middle area: [Castlereagh South F](https://openindex.co.uk/lisburn-and-castlereagh/castlereagh-south-f)
- Ward: [Carryduff West †](https://openindex.co.uk/lisburn-and-castlereagh/ward/carryduff-west)
- Constituency: [Belfast South and Mid Down †](https://openindex.co.uk/constituency/belfast-south-and-mid-down)
- Council: [Lisburn and Castlereagh](https://openindex.co.uk/lisburn-and-castlereagh)
- Nation: [Northern Ireland](https://openindex.co.uk/northern-ireland)
- Area: 5.47 km²
- People, mid-2024: 921

† Best fit: the ward and constituency this neighbourhood mostly lies in. Its edges do not follow theirs.

## Next door

[Downshire East A2](https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002425), [Downshire East A5](https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002430), [Castlereagh South E6](https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002483), [Castlereagh South G3](https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002491), [Castlereagh South J1](https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002485), [Castlereagh South F1](https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002481)

## Latest updates for Castlereagh South F2

- August 2026 house prices published: HM Land Registry and partners · Oct 2026.
- September 2026 rent published: ONS private rents · Oct 2026.
- Nitrogen dioxide (NO2) updated: Defra · Oct 2026.
- 2025 population published: ONS population estimates · Oct 2026.

The same figures as JSON: https://openindex.co.uk/v1/places/N20002484

## How to cite

Source: Open Index, openindex.co.uk. Link to this page, https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002484, or to one figure with its anchor, https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002484#f-population.

Open Index's own text and the figures it works out are licensed under CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Source data keeps its publishers' licences, named with each figure. Give each figure's period and source with it.

Snapshot 2026.10.11. The HTML page: https://openindex.co.uk/lisburn-and-castlereagh/neighbourhood/n20002484