Latest data from Public Health England, published by Northumberland County Council, reveals there were 371 positive cases confirmed in the county in the week to June 12.
The infection rate stands at 115.8 positive cases per 100,000 population for the same period.
Here are the 29 areas of Northumberland with the highest rates.
1. Ashington Central
The rate is 360.1 in Ashington Central where there were 18 positive cases.
The rate is 360.0 in Ashington's Haydon ward where there were 16 positive cases.
3. Bedlington West
The rate in Bedlington West is 335.5 and there were 15 positive cases.
The rate in 329.7 in Bothal ward where there were 15 positive cases.