Data from Public Health England, published by Northumberland County Council, reveals there were 1,868 positive coronavirus cases confirmed across the county in the week to July 10.
The infection rate stands at 583.3 positive cases per 100,000. By comparison, latest figures put the UK rate at 298.1.
Covid restrictions are expected to be further eased on July 19.
Here are the 21 areas of Northumberland with the highest rates...
5. Cramlington East
There were 38 positive cases in Cramlington East where the rate is 897 per 100,000.
6. Kitty Brewster
There were 57 positive cases in Blyth's Kitty Brewster ward where the rate is 878 per 100,000.
7. Ponteland North
There were 44 positive cases in Ponteland North where the infection rate is 884 per 100,000.
There were 39 positive cases in Blyth's Cowpen ward where the rate is 868 per 100,000.