Latest data from Public Health England reveals there were 1,905 positive cases countywide in the week to March 13.
The infection rate is 588.3 positive cases per 100,000 population.
Here are the 13 areas of Northumberland with the highest rates.
5. Longhorsley
There were 34 positive cases in Longhorsley ward where the rate is 834. Photo: Google
6. Lynemouth
There were 37 positive cases in Lynemouth ward where the rate is 824. Photo: Google
7. College
There were 40 positive cases in Ashington's College ward where the rate is 793. Photo: Google
8. Hexham West
There were 31 positive cases in Hexham West where the rate is 786. Photo: Google