William Street is in Gilfach, Bargoed and in Caerphilly district. CF81 8ND is located in the Gilfach electoral ward, within the English Parliamentary constituency of Caerphilly. This postcode has been in use since 1995-07-01.
StreetScan combines information about William Street, Gilfach, Bargoed, CF81 8ND and displays a report on the quality of life in this place and its surroundings.
Nearby postcodes are: CF81 8NA, CF81 8NE, CF81 8NJ, CF81 8LX, CF81 8LZ, CF81 8NL, CF81 8LW, CF81 8JA, CF81 8LP.
In the UK, the overall gender distribution is approximately 49% male and 51% female. The area surrounding CF81 8ND has a slightly higher male population, with 51% of residents being male. Several factors can contribute to this, including areas with industries or sectors that predominantly employ men, proximity to universities or technical schools with a higher enrollment of male students, presence of all-male or predominantly male institutions (military academies, boarding schools).
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Female | 47.5% | 49% | 1.5% | 51.0% | -2.0% |
| Male | 52.5% | 51% | -1.5% | 49.0% | 2.0% |
Across the UK, the average relationship status breakdown is roughly 44% married, 38% single, 9% divorced, 6% widowed, and 2% separated.
In the immediate area around CF81 8ND, a significant portion of the population is single, making up 44.4% of the residents. On average, approximately 38% of individuals who responded to the census in the UK were single. Areas with higher single populations are typically urban centers, university towns, regions with dynamic job markets, rich cultural offerings and entertainment facilities. These regions also tend to have a younger demographic.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Single | 38.2% | 44.4% | 6.2% | 37.9% | 6.5% |
| Married: Opposite sex | 38.2% | 30.4% | -7.8% | 44.2% | -13.8% |
| Civil partnership: Same sex | 0% | 0.8% | 0.8% | 0.1% | 0.7% |
| Separated | 1.6% | 3.5% | 1.9% | 2.2% | 1.3% |
| Divorced | 13% | 14.8% | 1.8% | 9.1% | 5.7% |
| Widowed | 8.9% | 6.2% | -2.7% | 6.1% | 0.1% |
Across the UK, the average 48.4% rated their health as Very Good, 33.6% as Good, 12.7% as Fair, 4% as Bad, and 1.2% as Very Bad.
Population age significantly impacts residents' health. Additionally, socioeconomic status plays a crucial role: higher income levels and lower poverty rates are linked to better health outcomes. Affluent areas benefit from higher living standards, access to private healthcare, and healthier lifestyle choices.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Very good health | 36.6% | 37.7% | 1.1% | 48.4% | -10.7% |
| Good health | 28.4% | 36.1% | 7.7% | 33.6% | 2.5% |
| Fair health | 19.5% | 14.1% | -5.4% | 12.7% | 1.4% |
| Bad health | 9.6% | 9.8% | 0.2% | 4.0% | 5.8% |
| Very bad health | 5.9% | 2.3% | -3.6% | 1.2% | 1.1% |
During the 2021 census, the educational qualifications of residents across the UK were as follows: 18.2% had no qualifications, 9.6% had 1-4 GCSEs, 13.4% had 5 or more GCSEs and 1-2 A/AS Levels, 16.9% had 2 or more A Levels, 33.8% held a degree (or equivalent), and 5.4% had completed an apprenticeship.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| No qualifications | 39% | 27.2% | -11.8% | 18.2% | 9.0% |
| 1-4 GCSEs or Equivalent | 17.1% | 9.4% | -7.7% | 9.6% | -0.2% |
| 5 or more GCSEs, an A-Level or 1-2 AS Levels | 17.5% | 15.4% | -2.1% | 13.4% | 2.0% |
| Apprenticeship | 4.1% | 4.3% | 0.2% | 5.3% | -1.0% |
| HNC, HND or 2+ A Levels | 11% | 16.5% | 5.5% | 16.9% | -0.4% |
| Degree or Similar | 7.3% | 24.8% | 17.5% | 33.8% | -9.0% |
| Other | 4.1% | 2.4% | -1.7% | 2.8% | -0.4% |
In this area, the population is predominantly white, with 96.7% identifying as such, significantly higher than the UK average of 81.4%. This indicates a lower level of ethnic diversity compared to the broader UK population.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Pakistani | 0% | 0.7% | 0.7% | 2.7% | -2.0% |
| Mixed White and Caribbean | 0% | 1% | 1.0% | 0.9% | 0.1% |
| Mixed Other | 0.3% | 0.7% | 0.4% | 0.8% | -0.1% |
| White | 99.7% | 96.7% | -3.0% | 81.4% | 15.3% |
| Other | 0% | 1% | 1.0% | 1.6% | -0.6% |
In this area, 97.4% of the population were born in the United Kingdom, which is higher than the UK average of 83.2%.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| United Kingdom | 99% | 97.4% | -1.6% | 83.2% | 14.2% |
| European Union | 0.3% | 1.3% | 1.0% | 6.1% | -4.8% |
| Rest of Europe | 0.3% | 0% | -0.3% | 0.8% | -0.8% |
| Africa | 0% | 0.3% | 0.3% | 2.7% | -2.4% |
| Middle East and Asia | 0% | 0.7% | 0.7% | 5.6% | -4.9% |
| Oceania | 0% | 0.3% | 0.3% | 0.3% | 0.0% |
| British Overseas | 0.3% | 0% | -0.3% | 0.0% | 0.0% |
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Born in the UK | 98.7% | 97.4% | -1.3% | 83.2% | 14.2% |
| 10+ Years | 0% | 0.7% | 0.7% | 9.8% | -9.1% |
| 5-10 Years | 0% | 1.3% | 1.3% | 2.9% | -1.6% |
| 2-5 Years | 0.3% | 0% | -0.3% | 2.2% | -2.2% |
| Less than 2 years | 1% | 0.7% | -0.3% | 1.9% | -1.2% |
| 2021 | UK Average | postcode vs UK (pp) | |
|---|---|---|---|
| United Kingdom | 71.1% | 76.7% | -5.6% |
| Ireland | 0.3% | 0.6% | -0.3% |
| Italy | 0.3% | 0.6% | -0.3% |
| Other EU countries | 1% | 1.5% | -0.5% |
| Southern Asia | 0.3% | 1.2% | -0.9% |
| Oceania | 0.3% | 0.1% | 0.2% |
| No passport held | 26.6% | 13.5% | 13.1% |
| 2021 | UK Average | postcode vs UK (pp) | |
|---|---|---|---|
| No religion | 61% | 37.2% | 23.8% |
| Christian | 30.8% | 46.2% | -15.4% |
| Muslim | 1% | 6.5% | -5.5% |
| Other religion | 0.7% | 0.6% | 0.1% |
| Not answered | 6.6% | 6.0% | 0.6% |
Over the last 12 months, the overall crime rate around William Street was 181.0 per 1,000 residents, which is 39.1% higher than the Aberbargoed and Bargoed average. The most reported crime type was Violence and sexual offences.
William Street has the 9th highest crime rate of 40 local areas in Aberbargoed and Bargoed and the 75th highest crime rate of 569 local areas in Caerphilly .
Violent and sexual offences accounted for around 95.2 crimes per 1,000 residents and have been rising year on year. Over the last decade, overall crime has fallen by about -22.4%.

Households in this area have a lower level of wealth compared to the average household in England and Wales. 89% of analyzed areas in England and Wales have higher average household annual income than this area.

| Address | Sale Price | Sale Date | Price Estimate 2025 |
|---|---|---|---|
| 7 William Street, Bargoed, Caerphilly Terraced, an established residential building | £132,000 | 2025-02-28 | £134,416 |
| 5 William Street, Bargoed, Caerphilly Terraced, an established residential building | £85,000 | 2022-10-12 | £90,206 |
| 1 William Street, Bargoed, Caerphilly Terraced, an established residential building | £80,000 | 2022-05-27 | £92,719 |
| 2 William Street, Bargoed, Caerphilly Semi-Detached, an established residential building | £80,500 | 2017-09-04 | £128,969 |
| Fire Station William Street, Bargoed, Caerphilly Other, an established residential building | £175,000 | 2015-03-27 | £275,908 |
| Full-Time Employee | 89 |
| Retired | 51 |
| Part-Time Employee | 26 |
| Long-Term Sick or disabled | 24 |
| Looking after home or family | 16 |
| Unemployed | 12 |
| Other | 11 |
| Student (economically inactive) | 11 |
| Self-Employed | 9 |
| Full-Time Student (with or without job) | 5 |
| Wholesale and retail trade; repair of motor vehicles and motor cycles | 24 |
| Manufacturing | 18 |
| Public administration and defence; compulsory social security | 16 |
| Construction | 15 |
| Human health and social work activities | 12 |
| Education | 7 |
| Other | 6 |
| Accommodation and food service activities | 6 |
| Transport and storage | 6 |
| Administrative and support service activities | 5 |
| Financial and insurance activities | 3 |
| Real estate activities | 2 |
| Information and communication | 1 |
| Water supply; sewerage, waste management and remediation activities | 1 |
| Ofsted Overall Effectiveness | Distance | Establishment Type | Has Nursery Classes | Gender | More Info | |
|---|---|---|---|---|---|---|
| Park Primary School Bargoed Park Crescent , CF81 8PN | - not rated | 443 yd | Welsh establishment | Not Applicable | Not applicable | More About School |
| Ysgol Gymraeg Gilfach Fargoed Commercial Street , Gilfach CF81 8JG | - not rated | 501 yd | Welsh establishment | Not Applicable | Not applicable | More About School |
| Gilfach Fargoed Primary School Vere Street , Gilfach CF81 8LB | - not rated | 643 yd | Welsh establishment | Not Applicable | Not applicable | More About School |
| St Gwladys Bargoed School Church Place , CF81 8RN | - not rated | 1,178 yd | Welsh establishment | Not Applicable | Mixed | More About School |
| Lewis School Pengam Gilfach , CF81 8LJ | - not rated | 1,234 yd | Welsh establishment | Not Applicable | Not applicable | More About School |
School statistics for this postcode are based on Ofsted rankings.
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Ricci's Cafe | 46 Cardiff Road | 633 yd | |
| Fireside Cafe Lounge | 24 Hanbury Road | 855 yd | |
| Subway | Unit 6b, Lowry Plaza, Hanbury Road | 861 yd | |
| Lucky Strike | 19 Hanbury Road | 923 yd | |
| New Continental Cafe | The New Continental Cafe & Del, 49 Hanbury Road | 935 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Gilfach Workmen's Club | 85-89 Park Place | 109 yd | |
| The Capel Hotel | Park Place | 165 yd | |
| Butters Bar | Commercial Street | 414 yd | |
| Bargoed Rugby Football Club Limited | 98-99 Gilfach Street | 515 yd | |
| Gelligaer Masonic Club | Masonic Hall, Cardiff Road | 605 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Hong Kong Fish Bar | 136 Park Place | 219 yd | |
| Lung Wah | 11 Commercial Street | 414 yd | |
| Fifty-Fifty | Shop Unit, 56 Cardiff Road | 627 yd | |
| Ajantha Indian Takeaway | 50 Cardiff Road | 633 yd | |
| Cantonese Takeaway | 4 Trafalgar Buildings, Cardiff Road | 724 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Morrisons | Colliers Walk | 671 yd | |
| Iceland | Unit 1 & 2, Lowry Plaza, Hanbury Road | 850 yd |
This statistics are based on Active Places Data - Contains Data © Sport England
| Percentage of premises that have Superfast Broadband (30Mbit/s or greater) coverage from fixed broadband | 100.0% |
| Percentage of premises that have Ultrafast Broadband (100Mbit/s or greater) coverage from fixed broadband | 0.0% |
| Percentage of premises that have Ultrafast Broadband (300Mbit/s or greater) coverage from fixed broadband | 0.0% |
| Percentage of premises that have coverage from a Gigabit capable service from fixed broadband | 0.0% |
| Percentage of premises unable to receive 2Mbit/s | 0.0% |
| Percentage of premises unable to receive 5Mbit/s | 0.0% |
| Percentage of premises unable to receive 10Mbit/s | 0.0% |
| Percentage of premises unable to receive 30Mbit/s | 0.0% |
Broadband statistics are based on Ofcom's Communications Market Report (CMR) 2022.