Latest data from Public Health England, published by Northumberland County Council, shows there are 8.7 positive cases per 100,000.
The statistics also reveal there were 28 positive cases across the county in the week to May 26.
Here are the 15 areas with the highest rates.
1. Seghill with Seaton Delaval
There were none positive cases in Seghill and Seaton Delaval ward in the week to April 5 with the rate at 146.8.
There were seven positive cases in Hartley ward where the rate is 143.2.
3. Cramlington South East
The rate in Cramlington South East is 87.9.
The rate is 71.7 in Ashington's Hirst ward.