Data from Public Health England, supplemented by the ONS and published by Northumberland County Council shows the Covid-19 rate was 266 per 100,000 on January 18.
There were 852 positive cases in the week up to that date, an increase of 8.67% on the previous week.
Here are the wards with the highest Covid-19 rates.
1. Hexham East
There were 37 positive cases in Hexham East where the rate is 808.4 per 100,000. Photo: Google
2. Berwick West with Ord
There were 25 positive cases in Berwick West with Ord and the rate is 598.8 per 100,000. Photo: Google
3. Cramlington East
There were 22 positive cases in Cramlington East where the rate is 519.6 per 100,000. Photo: Google
4. Prudhoe North
There were 27 positive cases in Prudhoe North where the rate is 502.8 per 100,000. Photo: Google