Latest data from Northumberland County Council, published by Public Health England, reveals there were 1,328 positive cases in the week to September 27.
The infection rate is 410.1 per 100,000 population for the same period.
Here are the 16 areas of Northumberland with the highest rates.
There were 28 positive cases in Blyth's Croft ward where the rate is 601.2.
There were 28 positive cases in Blyth's Isabella ward where the rate is 590.1.
3. Bedlington West
There were 24 positive cases in Bedlington West where the rate is 536.8.
4. Berwick North
There were 21 positive cases in Berwick North where the rate is 457.3.
Photo: Jane Coltman