Mermaid Quay is in Cardiff and in Cardiff district. CF10 5BZ is located in the Butetown electoral ward, within the English Parliamentary constituency of Cardiff South and Penarth. This postcode has been in use since 2000-06-01.
StreetScan combines information about Mermaid Quay, Cardiff, CF10 5BZ and displays a report on the quality of life in this place and its surroundings.
Nearby postcodes are: CF10 5AY, CF10 5RT, CF10 5BX, CF10 5AB, CF10 5AR, CF10 5BW, CF10 5ER, CF10 5BY, CF10 5EN.
In the UK, the overall gender distribution is approximately 49% male and 51% female. However, the area surrounding CF10 5BZ is primarily male, with 56.9% of the population 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 | 45.2% | 43.1% | -2.1% | 51.0% | -7.9% |
| Male | 54.8% | 56.9% | 2.1% | 49.0% | 7.9% |
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 CF10 5BZ, a significant portion of the population is single, making up 68.3% 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 | 61% | 68.3% | 7.3% | 37.9% | 30.4% |
| Married: Opposite sex | 18.6% | 18.9% | 0.3% | 44.2% | -25.3% |
| Married: Same sex | 0% | 1.2% | 1.2% | 0.3% | 0.9% |
| Civil partnership: Opposite sex | 0% | 0.4% | 0.4% | 0.1% | 0.3% |
| Separated | 5.6% | 2.4% | -3.2% | 2.2% | 0.2% |
| Divorced | 14.1% | 7.6% | -6.5% | 9.1% | -1.5% |
| Widowed | 0.6% | 1.2% | 0.6% | 6.1% | -4.9% |
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.
This area has a high percentage of residents reporting their health as Good or Very Good (87.5%) compared to the average (82%). This typically indicates either a younger population or more affluent area.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Very good health | 63.3% | 46% | -17.3% | 48.4% | -2.4% |
| Good health | 27.7% | 41.5% | 13.8% | 33.6% | 7.9% |
| Fair health | 7.4% | 8.1% | 0.7% | 12.7% | -4.6% |
| Bad health | 1.1% | 4% | 2.9% | 4.0% | 0.0% |
| Very bad health | 0.5% | 0.4% | -0.1% | 1.2% | -0.8% |
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.
In the area around CF10 5BZ this area, 6.9% of residents have no qualifications. This is significantly lower than the UK average of 18.2%. This area stands out for its high percentage of residents with higher education degree or similar. The UK average is 33.8%, while in this area it is 60.1%.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| No qualifications | 8.5% | 6.9% | -1.6% | 18.2% | -11.3% |
| 1-4 GCSEs or Equivalent | 4.5% | 2% | -2.5% | 9.6% | -7.6% |
| 5 or more GCSEs, an A-Level or 1-2 AS Levels | 11.9% | 12.5% | 0.6% | 13.4% | -0.9% |
| Apprenticeship | 0.6% | 2.8% | 2.2% | 5.3% | -2.5% |
| HNC, HND or 2+ A Levels | 8.5% | 13.7% | 5.2% | 16.9% | -3.2% |
| Degree or Similar | 62.1% | 60.1% | -2.0% | 33.8% | 26.3% |
| Other | 4% | 2% | -2.0% | 2.8% | -0.8% |
This area closely mirrors the overall ethnic composition of the UK, with 85.4% of the population identifying as white, with UK average of 81.4%.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Bangladeshi | 0.5% | 0% | -0.5% | 1.1% | -1.1% |
| Chinese | 1.6% | 1.6% | 0.0% | 0.7% | 0.9% |
| Indian | 4.8% | 3.2% | -1.6% | 3.1% | 0.1% |
| Pakistani | 0% | 0.4% | 0.4% | 2.7% | -2.3% |
| Other Asian | 0.5% | 0.8% | 0.3% | 1.6% | -0.8% |
| Black African | 0% | 0.4% | 0.4% | 2.5% | -2.1% |
| Black Caribbean | 1.1% | 0% | -1.1% | 1.0% | -1.0% |
| Mixed White and Asian | 2.7% | 0.4% | -2.3% | 0.8% | -0.4% |
| Mixed White and African | 1.6% | 0.4% | -1.2% | 0.4% | 0.0% |
| Mixed White and Caribbean | 1.6% | 1.6% | 0.0% | 0.9% | 0.7% |
| Mixed Other | 1.1% | 0.8% | -0.3% | 0.8% | 0.0% |
| White | 75% | 85.4% | 10.4% | 81.4% | 4.0% |
| Roma | 0% | 1.6% | 1.6% | 0.2% | 1.4% |
| Arab | 8.5% | 3.2% | -5.3% | 0.6% | 2.6% |
| Other | 1.1% | 0.4% | -0.7% | 1.6% | -1.2% |
In this area, 79.5% of the population were born in the United Kingdom, which is similar to the UK average of 83.2%.
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| United Kingdom | 68.6% | 79.5% | 10.9% | 83.2% | -3.7% |
| European Union | 7.4% | 8.7% | 1.3% | 6.1% | 2.6% |
| Rest of Europe | 1.6% | 0% | -1.6% | 0.8% | -0.8% |
| Africa | 4.8% | 1.2% | -3.6% | 2.7% | -1.5% |
| Middle East and Asia | 12.2% | 7.5% | -4.7% | 5.6% | 1.9% |
| The Americas and the Caribbean | 3.7% | 2.8% | -0.9% | 1.3% | 1.5% |
| Oceania | 1.6% | 0.4% | -1.2% | 0.3% | 0.1% |
| 2011 | 2021 | 10y change (pp) | UK Average | postcode vs UK (pp) | |
|---|---|---|---|---|---|
| Born in the UK | 67.6% | 79.5% | 11.9% | 83.2% | -3.7% |
| 10+ Years | 8% | 4.7% | -3.3% | 9.8% | -5.1% |
| 5-10 Years | 9% | 2.4% | -6.6% | 2.9% | -0.5% |
| 2-5 Years | 6.9% | 5.1% | -1.8% | 2.2% | 2.9% |
| Less than 2 years | 8.5% | 8.3% | -0.2% | 1.9% | 6.4% |
| 2021 | UK Average | postcode vs UK (pp) | |
|---|---|---|---|
| United Kingdom | 76.3% | 76.7% | -0.4% |
| Ireland | 3.2% | 0.6% | 2.6% |
| France | 0.4% | 0.3% | 0.1% |
| Italy | 2.4% | 0.6% | 1.8% |
| Portugal | 1.2% | 0.5% | 0.7% |
| Spain | 0.4% | 0.4% | 0.0% |
| Lithuania | 0.8% | 0.3% | 0.5% |
| Poland | 1.6% | 1.3% | 0.3% |
| Other EU countries | 0.8% | 1.5% | -0.7% |
| Turkey | 0.4% | 0.1% | 0.3% |
| North Africa | 0.8% | 0.1% | 0.7% |
| Middle East | 2% | 0.1% | 1.9% |
| Southern Asia | 0.8% | 1.2% | -0.4% |
| South-East Asia | 0.4% | 0.2% | 0.2% |
| North America and the Caribbean | 2.4% | 0.3% | 2.1% |
| Central and South America | 0.8% | 0.2% | 0.6% |
| Oceania | 0.4% | 0.1% | 0.3% |
| No passport held | 5.1% | 13.5% | -8.4% |
| 2021 | UK Average | postcode vs UK (pp) | |
|---|---|---|---|
| No religion | 56.7% | 37.2% | 19.5% |
| Christian | 28.6% | 46.2% | -17.6% |
| Hindu | 1.2% | 1.7% | -0.5% |
| Jewish | 0.8% | 0.5% | 0.3% |
| Muslim | 5.6% | 6.5% | -0.9% |
| Other religion | 0.4% | 0.6% | -0.2% |
| Not answered | 6.7% | 6.0% | 0.7% |
Over the last 12 months, the overall crime rate around Mermaid Quay was 1292.3 per 1,000 residents, which is 417.1% higher than the Butetown average. The most reported crime type was Anti-social behaviour.
Mermaid Quay has the highest crime rate of 45 local areas in Butetown and the 6th highest crime rate of 1,028 local areas in Cardiff .
Violent and sexual offences accounted for around 397.9 crimes per 1,000 residents and have been falling year on year. Over the last decade, overall crime has risen by about 12.8%.

Households in this area have a similar level of wealth to the average household in England and Wales. 54% of analyzed areas in England and Wales have higher average household annual income than this area.

| Address | Sale Price | Sale Date | Price Estimate 2025 |
|---|---|---|---|
| Unit 25 Mermaid Quay, Cardiff, Cardiff Other, an established residential building | £17,021 | 2022-04-27 | £17,719 |
| Unit 27 Mermaid Quay, Cardiff, Cardiff Other, an established residential building | £109,953 | 2021-03-05 | £122,170 |
| Unit 24 Mermaid Quay, Cardiff, Cardiff Other, an established residential building | £75,000 | 2015-03-11 | £104,284 |
CF10 5BZ area has a low unemployment rate. According to Census 2021, 1% residents of this area were unemployed, while the average in the UK was 4.83%. A low level of unemployment in an area indicates a strong job market, where most people who are seeking work can find employment. This generally reflects a healthy economy in the area.
The percentage of student residents living in CF10 5BZ area is much higher than the country's average. Usually places with high percentage of students are near Universities and near entertainment places.
| Full-Time Employee | 127 |
| Retired | 32 |
| Self-Employed | 29 |
| Student (economically inactive) | 21 |
| Part-Time Employee | 17 |
| Full-Time Student (with or without job) | 8 |
| Long-Term Sick or disabled | 8 |
| Other | 5 |
| Unemployed | 3 |
| Looking after home or family | 0 |
| Wholesale and retail trade; repair of motor vehicles and motor cycles | 18 |
| Information and communication | 16 |
| Professional, scientific and technical activities | 14 |
| Accommodation and food service activities | 13 |
| Financial and insurance activities | 13 |
| Human health and social work activities | 13 |
| Public administration and defence; compulsory social security | 12 |
| Education | 9 |
| Administrative and support service activities | 9 |
| Other | 7 |
| Manufacturing | 6 |
| Transport and storage | 4 |
| Real estate activities | 4 |
| Construction | 3 |
| Electricity, gas, steam and air conditioning supply | 2 |
| Ofsted Overall Effectiveness | Distance | Establishment Type | Has Nursery Classes | Gender | More Info | |
|---|---|---|---|---|---|---|
| Mount Stuart Primary Adelaide Street , Butetown CF10 5BS | - not rated | 125 yd | Welsh establishment | Not Applicable | Not applicable | More About School |
| Ysgol Gynradd Gymraeg Hamadryad Hamadryad Road , CF10 5UY | - not rated | 688 yd | Welsh establishment | Not Applicable | More About School | |
| St Cuthbert's R.C. Primary School Letton Way , Cardiff Bay CF10 4AB | - not rated | 1,023 yd | Welsh establishment | Not Applicable | Not applicable | More About School |
| Grange Town Primary Bromsgrove Street , Grangetown CF11 7XS | - not rated | 1,262 yd | Welsh establishment | Not Applicable | Not applicable | More About School |
| St Mary The Virgin C.I.W. Primary School North Church Street , Butetown CF10 5HB | - not rated | 1,313 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 |
|---|---|---|---|
| Hubbox | Unit 23, Mermaid Quay Tacoma Square, Butetown | 5 yd | |
| La Cha Cha Ltd | Unit 11, Mermaid Quay Bute Street, Butetown | 6 yd | |
| Yakitori #1 | Unit 10, Mermaid Quay Bute Street, Butetown | 6 yd | |
| The Club House | Unit 4 To 6, Mermaid Quay Stuart Street, Butetown | 33 yd | |
| Zizzi Restaurant | Unit U8, Mermaid Quay Tacoma Square, Butetown | 47 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Glee Club | The Glee Club, Mermaid Quay Stuart Street, Butetown | 6 yd | |
| Eli Jenkins | 7 - 8 Bute Crescent, Butetown | 88 yd | |
| Jd Wetherspoons | The Mount Stuart Stuart Place, Butetown | 129 yd | |
| Waterguard | Custom House Harbour Drive, Butetown | 396 yd | |
| Docks Conservative Club | Docks Conservative Club Burt Street, Butetown | 508 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Greggs Plc | Unit 21, Mermaid Quay Bute Street, Butetown | 16 yd | |
| Subway | Unit 3, Mermaid Quay Stuart Street, Butetown | 75 yd | |
| Domino's Pizza | Unit 17a, Mermaid Quay Bute Street, Butetown | 86 yd | |
| Boss & Brew Academy | The Wales Millennium Centre Bute Place, Butetown | 231 yd | |
| Carlos Pizza | 20 West Bute Street, Butetown | 244 yd |
| Business Name | Address | Food hygiene rating | Distance |
|---|---|---|---|
| Tesco | Unit 17, Mermaid Quay Bute Street, Butetown | 74 yd | |
| Sainsbury's | Shop, Embassy House, 96 Bute Street, Butetown | 128 yd | |
| The Co-operative Group | Unit 2, Aquila House Pierhead Street, Butetown | 561 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 | 79.2% |
| Percentage of premises that have Ultrafast Broadband (100Mbit/s or greater) coverage from fixed broadband | 64.6% |
| Percentage of premises that have Ultrafast Broadband (300Mbit/s or greater) coverage from fixed broadband | 64.6% |
| Percentage of premises that have coverage from a Gigabit capable service from fixed broadband | 64.6% |
| 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 | 18.8% |
| Percentage of premises unable to receive 30Mbit/s | 18.8% |
| Median download speed | 3.7 Mbit/s |
| Average download speed | 17.5 Mbit/s |
| Minimum download speed | 75.1 Mbit/s |
| Maximum download speed | 75.1 Mbit/s |
| Median upload speed | 1 Mbit/s |
| Average upload speed | 4.6 Mbit/s |
| Maximum upload speed | 20 Mbit/s |
Broadband statistics are based on Ofcom's Communications Market Report (CMR) 2022.