The areas of Wales where the coronavirus is growing fastest


The coronavirus is growing at such a rate in Wales that the Welsh government has had to put in place a 17-day lockdown to try to get the cases under control.The vast majority of Wales still see the number of daily cases rising, but infection rates do not appear to be increasing as quickly in parts of Wales, with Conwy, Gwynedd and Flintshire all seeing a decline in the growth of cases .

We scanned data from Public Health Wales to see the places in Wales where the disease is spreading the fastest. We compared the figures released on Friday 23 October to seven days before.

These figures are moving seven-day totals for new cases adjusted for population (per 100,000 population). It’s important to remember that while these numbers are a useful guide, they are only part of the story.

If testing increases massively in one location, there will likely be an increase in confirmed cases. It’s also important to remember that these numbers are low and do not suggest that the coronavirus is endemic in these areas.

However, these numbers are still a critical factor in the decision-making of the Welsh government and the public health of Wales.


Although Pembrokeshire has the second lowest number of cases based on population (Ceredigion is the lowest), it still saw a fairly large increase.

It’s important to keep in mind that since the county is less densely populated than most places, only a few new cases can make a big difference in the cases per 100,000 population.

Merthyr Tydfil

With 333.2 cases per 100,000 Merthyr, it is just behind Cardiff (336) as the place with the most cases according to population.

If you look at the graph, you can see a peak in the summer after an outbreak at a meat processing plant.


The number of daily new cases on the island of Anglesey has increased by 44% in seven days.

As with Merthyr Tydfil, you can see how cases increased for a while during the summer due to an outbreak at a meat processing plant.


Monmouthshire has managed to avert a major outbreak since March. This is in part due to the fact that it does not have large population centers. Cases have increased, with the population rising from 59 per 100,000 a week ago to 105 now.

Neath Port Talbot

Neath Port Talbot has a daily moving average of 231 cases per 100,000 people compared to 137 seven days ago.

This table shows the growth rates in each local authority:


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