Mortimer Avenue, Old St Mellons, Cardiff, CF3 6YF

People

Gender

In the UK, the overall gender distribution is approximately 49% male and 51% female. The area surrounding CF3 6YF has a slightly higher male population, with 52.1% 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	47.9%	47.9%	0.0%	51.0%	-3.1%
Male	52.1%	52.1%	0.0%	49.0%	3.1%

Partnership Status

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 CF3 6YF, a significant portion of the population is single, making up 50.2% 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	37.6%	50.2%	12.6%	37.9%	12.3%
Married: Opposite sex	50.5%	43.4%	-7.1%	44.2%	-0.8%
Separated	2.3%	0.4%	-1.9%	2.2%	-1.8%
Divorced	5.5%	5.1%	-0.4%	9.1%	-4.0%
Widowed	4.1%	0.9%	-3.2%	6.1%	-5.2%

Health

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 (93.8%) 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	56%	66.1%	10.1%	48.4%	17.7%
Good health	31.7%	27.7%	-4.0%	33.6%	-5.9%
Fair health	7.7%	4.2%	-3.5%	12.7%	-8.5%
Bad health	3.9%	1.6%	-2.3%	4.0%	-2.4%
Very bad health	0.7%	0.3%	-0.4%	1.2%	-0.9%

Education and Qualifications

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 CF3 6YF this area, 4.3% 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 67.9%.

	2011	2021	10y change (pp)	UK Average	postcode vs UK (pp)
No qualifications	11%	4.3%	-6.7%	18.2%	-13.9%
1-4 GCSEs or Equivalent	9.2%	1.7%	-7.5%	9.6%	-7.9%
5 or more GCSEs, an A-Level or 1-2 AS Levels	20.6%	10.7%	-9.9%	13.4%	-2.7%
Apprenticeship	6.9%	0.4%	-6.5%	5.3%	-4.9%
HNC, HND or 2+ A Levels	12.4%	15%	2.6%	16.9%	-1.9%
Degree or Similar	34.9%	67.9%	33.0%	33.8%	34.1%
Other	5%	0%	-5.0%	2.8%	-2.8%

Culture

Ethnic Group

This area closely mirrors the overall ethnic composition of the UK, with 75.4% of the population identifying as white, with UK average of 81.4%.

	2011	2021	10y change (pp)	UK Average	postcode vs UK (pp)
Bangladeshi	1.4%	1.3%	-0.1%	1.1%	0.2%
Chinese	1.1%	1%	-0.1%	0.7%	0.3%
Indian	1.4%	8.4%	7.0%	3.1%	5.3%
Pakistani	1.1%	3.9%	2.8%	2.7%	1.2%
Other Asian	1.4%	1%	-0.4%	1.6%	-0.6%
Black African	3.5%	1.3%	-2.2%	2.5%	-1.2%
Other Black	0%	0.3%	0.3%	0.5%	-0.2%
Mixed White and Asian	0.4%	1.6%	1.2%	0.8%	0.8%
Mixed White and African	0%	0.3%	0.3%	0.4%	-0.1%
Mixed White and Caribbean	0.4%	0.3%	-0.1%	0.9%	-0.6%
Mixed Other	1.8%	1.9%	0.1%	0.8%	1.1%
White	85.2%	75.4%	-9.8%	81.4%	-6.0%
Roma	0%	1%	1.0%	0.2%	0.8%
Arab	2.1%	1.6%	-0.5%	0.6%	1.0%
Other	0.4%	0.6%	0.2%	1.6%	-1.0%

Country of Birth

In this area, 83.2% 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	90.1%	83.2%	-6.9%	83.2%	0.0%
European Union	1.8%	3.2%	1.4%	6.1%	-2.9%
Rest of Europe	0%	0.3%	0.3%	0.8%	-0.5%
Africa	1.1%	3.2%	2.1%	2.7%	0.5%
Middle East and Asia	6.7%	9.4%	2.7%	5.6%	3.8%
The Americas and the Caribbean	0.4%	0.3%	-0.1%	1.3%	-1.0%
Oceania	0%	0.3%	0.3%	0.3%	0.0%

Length of Residence

	2011	2021	10y change (pp)	UK Average	postcode vs UK (pp)
Born in the UK	89.4%	83.2%	-6.2%	83.2%	0.0%
10+ Years	3.9%	12.3%	8.4%	9.8%	2.5%
5-10 Years	0.7%	3.6%	2.9%	2.9%	0.7%
2-5 Years	1.4%	1%	-0.4%	2.2%	-1.2%
Less than 2 years	4.6%	0%	-4.6%	1.9%	-1.9%

Passport Held

	2021	UK Average	postcode vs UK (pp)
United Kingdom	88.3%	76.7%	11.6%
Ireland	0.6%	0.6%	0.0%
France	0.3%	0.3%	0.0%
Italy	1.3%	0.6%	0.7%
Spain	0.3%	0.4%	-0.1%
Poland	0.3%	1.3%	-1.0%
Other EU countries	1%	1.5%	-0.5%
North Africa	0.3%	0.1%	0.2%
Eastern Asia	0.3%	0.3%	0.0%
Southern Asia	0.6%	1.2%	-0.6%
No passport held	6.5%	13.5%	-7.0%

Religion

	2021	UK Average	postcode vs UK (pp)
No religion	42.9%	37.2%	5.7%
Christian	37.4%	46.2%	-8.8%
Buddhist	0.3%	0.5%	-0.2%
Hindu	5.2%	1.7%	3.5%
Muslim	7.1%	6.5%	0.6%
Sikh	1.3%	0.9%	0.4%
Not answered	5.8%	6.0%	-0.2%

Safety

Is Mortimer Avenue Street dangerous?

Over the last 12 months, the overall crime rate around Mortimer Avenue was 115.1 per 1,000 residents, which is 46.6% higher than the Pontprennau and Old St Mellons average. The most reported crime type was Anti-social behaviour.

Mortimer Avenue has the 26th highest crime rate of 66 local areas in Pontprennau and Old St Mellons and the 312th highest crime rate of 1,028 local areas in Cardiff .

Violent and sexual offences accounted for around 32.4 crimes per 1,000 residents and have been rising year on year. Over the last decade, overall crime has risen by about 35.4%.

🔎 See full breakdown of local crime, hotspots & trends

Affluence

Household Income

Households in this area have a higher level of wealth to the average household in England and Wales. 75% of analyzed areas in England and Wales have lower average household annual income than this area.

Average Household Income
£52,900

Income Rank
8/10

Household Income in CF3 6YF, Local Authority and Region

Deprivation

Overall Deprivation Rank - 2/10 (very low )
The Welsh Index of Multiple Deprivation (WIMD) measures how deprived small areas in Wales are compared to each other. WIMD highlights areas with the highest levels of different types of deprivation. Its main goal is to provide information about the most deprived areas in Wales to help make decisions about funding and local services. It considers the following domains:
Income Deprivation Domain - 1/10 (very low )
This domain measures the percentage of people with income below a certain level. It makes up 22% of the overall index.
Employment Deprivation Domain - 1/10 (very low )
This domain measures the lack of employment. It includes people of working age who are unable to work due to poor health or who are unemployed but looking for work. This domain makes up 22% of the overall Index.
Health Deprivation Domain - 1/10 (very low )
This domain measures poor health. It doesn't have any sub-sections. Some indicators are adjusted for age and sex to account for differences in different areas. This domain makes up 15% of the overall index.
Education Deprivation Domain - 2/10 (very low )
This domain measures how much people in an area lack education, training, and skills. It shows the educational disadvantages, like not having qualifications or skills. This domain makes up 14% of the overall index.
Access To Services Deprivation Domain - 3/10 (low )
This domain measures how deprived a household is if they can't access important services needed for daily life, both in person and online. This includes not being able to get things like food (material deprivation) and not being able to do things like attend after-school activities (social deprivation). Poor access to services can make other types of deprivation worse. This domain counts for 10% of the overall index.
Housing Deprivation Domain - 1/10 (very low )
The housing domain aims to identify poor housing based on physical conditions, living conditions, and availability. "Living conditions" means how suitable the housing is for the people living there, including health, safety, and necessary adjustments. This domain makes up 7% of the overall index.
Community Safety Deprivation Domain - 7/10 (above average )
This domain looks at how safe people feel in their community. It includes actual crime and fire incidents, as well as how safe people feel when they are outside in their neighborhood. This domain makes up 5% of the overall index.
Physical Environment Deprivation Domain - 10/10 (very high )
This domain measures things in the local area that might affect the well-being or quality of life of residents. It makes up 5% of the overall index.

Property Prices

Average property prices on Mortimer Avenue are based on 155 property sales since the beginning of 1995. Estimated property prices are calculated by adjusting the last sale price by current House Price Index for Cardiff.
StreetScan downloads house price data directly from the HM Land Registry and uses it to create these statistics.

House Prices for Mortimer Avenue, Old St Mellons, Cardiff, CF3 6YF

Estimated Average Property Prices for CF3 6YF

Average Price
£313,149

Semi-Detached
£295,883

Terraced
£263,866

Detached
£360,898

Flats/Maisonettes
no sales

Other
no sales

Estimated Average Property Prices for Mortimer Avenue

Average Price
£310,906

Semi-Detached
£298,631

Terraced
£261,549

Detached
£374,832

Flats/Maisonettes
no sales

Other
no sales

Property Prices Comparison

Latest Property Sales on Mortimer AvenueStreet

Address	Sale Price	Sale Date	Price Estimate 2025
166 Mortimer Avenue, Cardiff, Cardiff Semi-Detached, an established residential building	£289,950	2025-08-04	£290,515
118 Mortimer Avenue, Cardiff, Cardiff Detached, an established residential building	£340,000	2025-04-30	£339,668
162 Mortimer Avenue, Cardiff, Cardiff Detached, an established residential building	£365,000	2025-04-22	£364,644
106 Mortimer Avenue, Cardiff, Cardiff Terraced, an established residential building	£240,000	2025-02-13	£243,074
142 Mortimer Avenue, Cardiff, Cardiff Detached, an established residential building	£325,000	2024-12-10	£333,467

View All Property Sales and Other Statistics for CF3 6YF

Employment

CF3 6YF area has a low unemployment rate. According to Census 2021, 2% 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.

Economic Activity

Full-Time Employee	155
Part-Time Employee	29
Self-Employed	20
Looking after home or family	9
Unemployed	5
Retired	5
Student (economically inactive)	5
Other	4
Full-Time Student (with or without job)	4
Long-Term Sick or disabled	1

Employment Industry

Wholesale and retail trade; repair of motor vehicles and motor cycles	28
Human health and social work activities	19
Education	14
Administrative and support service activities	13
Manufacturing	13
Public administration and defence; compulsory social security	12
Other	9
Accommodation and food service activities	9
Construction	8
Financial and insurance activities	7
Professional, scientific and technical activities	5
Transport and storage	5
Electricity, gas, steam and air conditioning supply	4
Information and communication	3
Real estate activities	2

Schools

Not applicable

	Ofsted Overall Effectiveness	Distance	Establishment Type	Has Nursery Classes	Gender	More Info
St Cadoc's Primary School Shaw Close , Llanrumney CF3 5NX	- not rated	1,170 yd	Welsh establishment	Not Applicable	Not applicable	More About School
Glan-Yr-Afon Primary Browing Close , Llanrumney CF3 5NJ	- not rated	1,266 yd	Welsh establishment	Not Applicable	Not applicable	More About School
St Johns College Newport Road , College Green CF3 5YX	- not rated	1,517 yd	Welsh establishment	Not Applicable	Not applicable	More About School
Bryn Celyn Primary School Bryn Celyn , Pentwyn CF23 7ES	- not rated	1,722 yd	Welsh establishment	Not Applicable	Not applicable	More About School
Pen-Y-Bryn Primary School Dunster Road , Llanrumney CF3 5TP	- not rated	1,727 yd	Welsh establishment	Not Applicable	Not applicable	More About School

School statistics for this postcode are based on Ofsted rankings.

Food and Drink

Restaurants, Cafes, Canteens

Business Name	Address	Distance
Bayside Grill	42 Heol Williams, Old St Mellons	124 yd
Compass At Asda	Cardiff Gate Retail Park Dering Road, Pontprennau	269 yd
St Mellons Church In Wales Primary School	St Mellons Church In Wales Primary School Bridge Road, Old St Mellons	346 yd
Costa Ltd	Costa Coffee Ltd, Cardiff Gate Retail Park Dering Road, Pontprennau	425 yd
McDonalds	1, Cardiff Gate Retail Park Dering Road, Pontprennau	427 yd

Pubs, Bars, Nightclubs

Business Name	Address	Food hygiene rating	Distance
The Unicorn Inn	Unicorn Inn Church Road, Old St Mellons		486 yd

Takeaway, Sandwich Shops

Business Name	Address	Food hygiene rating	Distance
Subway	Cardiff Gate Retail Park Dering Road, Pontprennau		269 yd

Supermarkets, Hypermarkets

Business Name	Address	Distance
Spar Supermarket	2 Heol Booths, Old St Mellons	238 yd
Asda Stores Ltd	Asda Supermarket, Cardiff Gate Retail Park Dering Road, Pontprennau	425 yd
Waitrose	Welcome Break Service Station Junction 30 M4 Malthouse Avenue, Pontprennau	644 yd

Sport

We haven't found any sport facilities near CF3 6YF postcode.

Broadband

Technology Aviability

Percentage of premises that have Superfast Broadband (30Mbit/s or greater) coverage from fixed broadband	80.8%
Percentage of premises that have Ultrafast Broadband (100Mbit/s or greater) coverage from fixed broadband	80.8%
Percentage of premises that have Ultrafast Broadband (300Mbit/s or greater) coverage from fixed broadband	80.8%
Percentage of premises that have coverage from a Gigabit capable service from fixed broadband	80.8%

Speed Aviability

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	19.2%

Download Speed

Median download speed	160 Mbit/s
Average download speed	212.6 Mbit/s
Minimum download speed	1000 Mbit/s
Maximum download speed	1000 Mbit/s

Upload Speed

Median upload speed	20 Mbit/s
Average upload speed	29.7 Mbit/s
Maximum upload speed	115 Mbit/s

Broadband statistics are based on Ofcom's Communications Market Report (CMR) 2022.