COVID

These 40 communities have the highest risk of coronavirus transmission in Mass.

The list has grown by 17 since last week.

Licensed Vocational Nurse Blessing Iwenofu administers a coronavirus test at a free walk-up COVID-19 testing site at Amazing Things Art Center in Framingham. Jessica Rinaldi/Globe Staff

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This week, 40 communities in Massachusetts have the highest risk of COVID-19 infection, 17 more than last week, according to state data.

And a new community tops the list for the highest average daily case count per 100,000: Middleton.

But Middleton’s overall case count includes those from the Middleton Jail and House of Correction, where there’s been an outbreak among inmates and employees.

On Monday, Essex County Sheriff Kevin Coppinger said in a video message that the majority of cases have been asymptomatic among inmates. He said all 889 inmates, along with 401 employees and vendors at the facility, were tested last weekend. From those, 137 inmates and 31 employees tested positive.

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To be considered high risk, a community has to have an average daily case count greater than 8 per 100,000 residents for the last two weeks. Most cities and towns are color-coded gray – less than 5 reported cases within the last two weeks – or green, which is less than 4 cases per 100,000 residents on average per day for the same period. Communities in yellow had an average daily incidence rate of between 4 and 8 per 100,000 for the last 14 days.

Coronavirus individual community data

Here’s a look at each of the state’s highest risk communities:

1. Middleton

Average daily incidence rate: 58.1 per 100,000

Case count: 84

Tests conducted: 1,189

Positive tests: 86

Positivity rate: 7.23 percent

2. Lawrence

Average daily incidence rate: 35.2 per 100,000

Case count: 435

Tests conducted: 7,595 

Positive tests: 538

Positivity rate: 7.08 percent

3. North Andover

Average daily incidence rate: 34.5 per 100,000

Case count: 146

Tests conducted: 9,889

Positive tests: 162

Positivity rate: 1.64 percent

4. Nantucket

Average daily incidence rate: 23.3 per 100,000

Case count: 37

Tests conducted: 806 

Positive tests: 39

Positivity rate: 4.84 percent

5. Chelsea

Average daily incidence rate: 22.4 per 100,000

Case count: 118

Tests conducted: 5,273

Positive tests: 141

Positivity rate: 2.67 percent

6. Sunderland

Average daily incidence rate: 20.7 per 100,000

Case count: 11

Tests conducted: 1,552 

Positive tests: 11

Positivity rate: 0.71 percent

7. Haverhill

Average daily incidence rate: 20 per 100,000

Case count: 184

Tests conducted: 6,075

Positive tests: 210

Positivity rate: 3.46 percent

8. Everett

Average daily incidence rate: 19.3 per 100,000

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Case count: 131

Tests conducted: 4,251

Positive tests: 159

Positivity rate: 3.74 percent

9. Revere

Average daily incidence rate: 17.8 per 100,000

Case count: 152

Tests conducted: 5,625

Positive tests: 196

Positivity rate: 3.48 percent

10. Amherst 

Average daily incidence rate: 16.8 per 100,000

Case count: 95

Tests conducted: 23,661

Positive tests: 99

Positivity rate: 0.42 percent

11. Lowell

Average daily incidence rate: 16.3 per 100,000

Case count: 266

Tests conducted: 8,322

Positive tests: 297

Positivity rate: 3.57 percent

12. Methuen

Average daily incidence rate: 15.5 per 100,000

Case count: 116

Tests conducted: 3,952 

Positive tests: 136

Positivity rate: 3.44 percent

13. Springfield

Average daily incidence rate: 14.6 per 100,000

Case count: 324

Tests conducted: 12,514

Positive tests: 390

Positivity rate: 3.12 percent

14. Southborough

Average daily incidence rate: 13.2 per 100,000

Case count: 18

Tests conducted: 1,665 

Positive tests: 21

Positivity rate: 1.26 percent

15. Framingham

Average daily incidence rate: 12.8 per 100,000

Case count: 133

Tests conducted: 6,471 

Positive tests: 163

Positivity rate: 2.52 percent

16. Marlborough

Average daily incidence rate: 12 per 100,000

Case count: 73

Tests conducted: 3,372 

Positive tests: 92

Positivity rate: 2.73 percent

17. Hudson

Average daily incidence rate: 10.9 per 100,000

Case count: 32

Tests conducted: 1,262 

Positive tests: 37

Positivity rate: 2.93 percent

18. Holyoke

Average daily incidence rate: 10.7 per 100,000

Case count: 62

Tests conducted: 2,834 

Positive tests: 66

Positivity rate: 2.33 percent

19. Attleboro

Average daily incidence rate: 10.5 per 100,000

Case count: 68

Tests conducted: 2,669 

Positive tests: 82

Positivity rate: 3.07 percent

20. Malden

Average daily incidence rate: 10.4 per 100,0000

Case count: 99

Tests conducted: 5,762 

Positive tests: 107

Positivity rate: 1.86 percent

21. New Bedford (tie)

Average daily incidence rate: 10 per 100,000

Case count: 139

Tests conducted: 4,944 

Positive tests: 201

Positivity rate: 4.07 percent

21. Boston (tie)

Average daily incidence rate: 10 per 100,000

Case count: 972

Tests conducted: 176,376 

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Positive tests: 1,170

Positivity rate: 0.66 percent

21. Worcester (tie)

Average daily incidence rate: 10 per 100,000

Case count: 269

Tests conducted: 36,795 

Positive tests: 322

Positivity rate: 0.88 percent

24. Lynn

Average daily incidence rate: 9.8 per 100,000

Case count: 139

Tests conducted: 6,455 

Positive tests: 194

Positivity rate: 3.01 percent

25. Acushnet

Average daily incidence rate: 9.6 per 100,000

Case count: 14

Tests conducted: 489 

Positive tests: 15

Positivity rate: 3.07 percent

26. Plymouth

Average daily incidence rate: 9.3 per 100,000

Case count: 81

Tests conducted: 3,160 

Positive tests: 84

Positivity rate: 2.66 percent

27. Waltham

Average daily incidence rate: 9.2 per 100,000

Case count: 86

Tests conducted: 17,431

Positive tests: 93

Positivity rate: 0.53 percent

28. Woburn

Average daily incidence rate: 9.1 per 100,000

Case count: 53

Tests conducted: 3,008

Positive tests: 61

Positivity rate: 2.03 percent

29. Kingston

Average daily incidence rate: 9 per 100,000

Case count: 17

Tests conducted: 1,079

Positive tests: 19

Positivity rate: 1.76 percent

30. Brockton (tie)

Average daily incidence rate: 8.9 per 100,000

Case count: 122

Tests conducted: 6,048

Positive tests: 146

Positivity rate: 2.41 percent

30. Chelmsford (tie)

Average daily incidence rate: 8.9 per 100,000

Case count: 45

Tests conducted: 2,348

Positive tests: 52

Positivity rate: 2.21 percent

30. Leicester (tie)

Average daily incidence rate: 8.9 per 100,000

Case count: 14

Tests conducted: 841

Positive tests: 15

Positivity rate: 1.78 percent

30. Southbridge (tie)

Average daily incidence rate: 8.9 per 100,000

Case count: 21

Tests conducted: 1,011 

Positive tests: 21

Positivity rate: 2.08 percent

34. Webster

Average daily incidence rate: 8.7 per 100,000

Case count: 21

Tests conducted: 1,249

Positive tests: 22

Positivity rate: 1.76 percent

35. Randolph

Average daily incidence rate: 8.6 per 100,000

Case count: 41

Tests conducted: 2,479 

Positive tests: 44

Positivity rate: 1.77 percent

36. Winthrop

Average daily incidence rate: 8.3 per 100,000

Case count: 22

Tests conducted: 2,497

Positive tests: 31

Positivity rate: 1.24 percent

37. Avon

Average daily incidence rate: 8.2 per 100,000

Case count: 5

Tests conducted: 274 

Positive tests: 5

Positivity rate: 1.82 percent

38. Dartmouth (tie)

Average daily incidence rate: 8.1 per 100,000

Case count: 42

Tests conducted: 2,806 

Positive tests: 52

Positivity rate: 1.85 percent

39. Dudley (tie)

Average daily incidence rate: 8.1 per 100,000

Case count: 14

Tests conducted: 3,226 

Positive tests: 14

Positivity rate: 0.43 percent

40. Dracut

Average daily incidence rate: 8.0 per 100,000

Case count: 36

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Tests conducted: 2,106 

Positive tests: 39

Positivity rate: 1.85 percent

View all of the state’s data here:

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