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Massachusetts Coronavirus Map and Case Count

Tracking Coronavirus in Massachusetts: Latest Map and Case Count

We have published redesigned tracking pages to better reflect the current state of the pandemic. See the new pages here, and read this story to learn more about this change.

New reported cases

Feb. 2020
Sept.
Apr. 2021
Nov.
Jun. 2022
Jan. 2023
10,000
20,000 cases
7-day average
363

Test positivity rate

Feb. 2020 Mar. 2023

Hospitalized

Feb. 2020 Mar. 2023

Deaths

Feb. 2020 Mar. 2023
Daily Avg. on Mar. 23 Per 100,000 14-Day Change
Cases 363 5 –25%
Test positivity 4.1% –22%
Hospitalized 449 7 –18%
In I.C.U.s 50 <1 –12%
Deaths 7 <1 –40%
About this data Sources: State and local health agencies (cases, deaths); U.S. Department of Health and Human Services (test positivity, hospitalizations, I.C.U. patients). Test positivity, hospitalizations, I.C.U.s and deaths show seven-day averages. Test positivity is based only on P.C.R. test results reported to the federal government. Test positivity, hospitalization and I.C.U. data may not yet be available for yesterday. Figures shown are the most recent data available.

Latest trends

  • An average of 363 cases per day were reported in Massachusetts in the last week. Cases have decreased by 25 percent from the average two weeks ago. Deaths have decreased by 40 percent.
  • Since the beginning of the pandemic, a total of 2,230,150 cases have been reported. At least 1 in 282 residents have died from the coronavirus, a total of 24,441 deaths.
  • January 2022 was the month with the highest average cases, while April 2020 was the month with the highest average deaths in Massachusetts.

How to read Covid data now

Higher test positivity rates are a sign that many infections are not reported — even if they are tested for at home. This results in a more severe undercount of cases. The number of hospitalized patients with Covid is a more reliable measure because testing is more consistent in hospitals. Read more about the data.

Daily new hospital admissions by age in Massachusetts

This chart shows for each age group the number of people per 100,000 that were newly admitted to a hospital with Covid-19 each day, according to data from the U.S. Department of Health and Human Services. Dips and spikes could be due to inconsistent reporting by hospitals.

  • Under 18
  • 18-29
  • 30-49
  • 50-59
  • 60-69
  • 70+
  • All ages
Oct. 2020
Mar. 2021
Aug.
Jan. 2022
Jun.
Nov.
10 daily admissions
20 daily admissions per 100,000
About this data Sources: U.S. Department of Health and Human Services (daily confirmed and suspected Covid-19 hospital admissions); Census Bureau (population data). Data prior to October 2020 was unreliable. Data reported in the most recent seven days may be incomplete.

Hot spots

Average daily cases per 100,000 people in past week
10
30
50
70
100
250
About this data The hot spots map shows the share of population with a new reported case over the last week.

Vaccinations

Fully vaccinated With a booster
All ages
82%
45%
65 and up
95%
75%

See more details ›

About this data Sources: Centers for Disease Control and Prevention, state governments, U.S. Census Bureau. The C.D.C. reported on Nov. 30 that booster doses are sometimes misclassified as first doses, which may overestimate first dose coverage among adults.

Vaccinations

Fully vaccinated With a booster
All ages
82%
45%
65 and up
95%
75%

See more details ›

About this data Sources: Centers for Disease Control and Prevention, state governments, U.S. Census Bureau. The C.D.C. reported on Nov. 30 that booster doses are sometimes misclassified as first doses, which may overestimate first dose coverage among adults.

Latest trends

  • An average of 363 cases per day were reported in Massachusetts in the last week. Cases have decreased by 25 percent from the average two weeks ago. Deaths have decreased by 40 percent.
  • Since the beginning of the pandemic, a total of 2,230,150 cases have been reported. At least 1 in 282 residents have died from the coronavirus, a total of 24,441 deaths.
  • January 2022 was the month with the highest average cases, while April 2020 was the month with the highest average deaths in Massachusetts.

How to read Covid data now

Higher test positivity rates are a sign that many infections are not reported — even if they are tested for at home. This results in a more severe undercount of cases. The number of hospitalized patients with Covid is a more reliable measure because testing is more consistent in hospitals. Read more about the data.

How trends have changed in Massachusetts

New reported cases by day
Feb. 2020
Sept.
Apr. 2021
Nov.
Jun. 2022
Jan. 2023
10,000
20,000 cases
7-day average
363
Test positivity rate
Feb. 2020
Sept.
Apr. 2021
Nov.
Jun. 2022
Jan. 2023
10%
20% positive
7-day average
0
Covid patients in hospitals and I.C.U.s
Early data may be incomplete.
Feb. 2020
Sept.
Apr. 2021
Nov.
Jun. 2022
Jan. 2023
2,000
4,000 hospitalized
Hospitalized
In I.C.U.s
0
New reported deaths by day
Feb. 2020
Sept.
Apr. 2021
Nov.
Jun. 2022
Jan. 2023
50
100
150 deaths
7-day average
7
About this data Sources: State and local health agencies (cases, deaths); U.S. Department of Health and Human Services (test positivty, hospitalizations, I.C.U. patients). The seven-day average is the average of the most recent seven days of data. Cases and deaths data are assigned to dates based on when figures are publicly reported. Figures for Covid patients in hospitals and I.C.U.s are the most recent number of patients with Covid-19 who are hospitalized or in an intensive care unit on that day. Dips and spikes could be due to inconsistent reporting by hospitals. Hospitalization numbers early in the pandemic are undercounts due to incomplete reporting by hospitals to the federal government. Test positivity is based on P.C.R. viral test specimens tested by laboratories and state health departments and reported to the federal government. Hospitalizations and test positivity are reported based on dates assigned by the U.S. Department of Health and Human Services and are subject to historical revisions.

Average cases per capita in Massachusetts

Fewer More

This calendar shows data through 2022 and will no longer be updated in 2023. The Times will continue to report the data for other displays on this page.

About the data

In data for Massachusetts, The Times primarily relies on reports from the state. The state releases new data once a week. It released new data daily until July 2021 and on weekdays until July 2022. The state reports cases and deaths based on a person’s permanent or usual residence.

The Times has identified reporting anomalies or methodology changes in the data.

More about reporting anomalies or changes
  • March 14, 2022: Massachusetts changed its methodology for counting deaths to align with national guidance, resulting in a decrease of about 3,700 deaths.
  • Jan. 17, 2022: Massachusetts did not announce new cases and deaths for the Martin Luther King Jr. Day holiday.
  • Nov. 25, 2021: Massachusetts did not announce new cases and deaths for the Thanksgiving holiday.
  • Nov. 11, 2021: Massachusetts did not announce new data because of the Veterans Day holiday.
  • Oct. 11, 2021: Massachusetts did not release new data because of the holiday.
  • Sept. 6, 2021: The daily count could be artificially low because many jurisdictions did not announce new data on Labor Day.
  • Jan. 2, 2021: Massachusetts reported data for two days after reporting no data on New Year's Day.
  • Dec. 26, 2020: Massachusetts reported data for Dec. 25 and 26 after reporting no data on Christmas.
  • Nov. 27, 2020: Massachusetts reported data for Nov. 26 and Nov. 27 after reporting no data on Thanksgiving.
  • Sept. 2, 2020: Massachusetts removed 8,050 cases and 26 deaths after revising its methodology for probable cases and deaths.
  • Aug. 23, 2020: Massachusetts did not report new cases or deaths during data system maintenance.
  • June 30, 2020: Massachusetts removed duplicate reports, causing a decrease in the total number of deaths.
  • June 1, 2020: Massachusetts began reporting probable cases and deaths dating back to March 1, leading to a large one-day increase.
  • April 24, 2020: Massachusetts announced a backlog of cases from earlier in April.
  • As of Aug. 12, Massachusetts reports only lab-confirmed cases by county. The state previously included probable cases. Massachusetts did not report county-level updates from Aug. 12 to Aug. 17.

The tallies on this page include probable and confirmed cases and deaths.

Confirmed cases and deaths, which are widely considered to be an undercount of the true toll, are counts of individuals whose coronavirus infections were confirmed by a molecular laboratory test. Probable cases and deaths count individuals who meet criteria for other types of testing, symptoms and exposure, as developed by national and local governments.

Governments often revise data or report a single-day large increase in cases or deaths from unspecified days without historical revisions, which can cause an irregular pattern in the daily reported figures. The Times is excluding these anomalies from seven-day averages when possible. For agencies that do not report data every day, variation in the schedule on which cases or deaths are reported, such as around holidays, can also cause an irregular pattern in averages. The Times uses an adjustment method to vary the number of days included in an average to remove these irregularities.

Credits

By Jordan Allen, Sarah Almukhtar, Aliza Aufrichtig, Anne Barnard, Matthew Bloch, Penn Bullock, Sarah Cahalan, Weiyi Cai, Julia Calderone, Keith Collins, Matthew Conlen, Lindsey Cook, Gabriel Gianordoli, Amy Harmon, Rich Harris, Adeel Hassan, Jon Huang, Danya Issawi, Danielle Ivory, K.K. Rebecca Lai, Alex Lemonides, Eleanor Lutz, Allison McCann, Richard A. Oppel Jr., Jugal K. Patel, Alison Saldanha, Kirk Semple, Shelly Seroussi, Julie Walton Shaver, Amy Schoenfeld Walker, Anjali Singhvi, Charlie Smart, Mitch Smith, Albert Sun, Rumsey Taylor, Lisa Waananen Jones, Derek Watkins, Timothy Williams, Jin Wu and Karen Yourish.   ·   Reporting was contributed by Jeff Arnold, Ian Austen, Mike Baker, Brillian Bao, Ellen Barry, Shashank Bengali, Samone Blair, Nicholas Bogel-Burroughs, Aurelien Breeden, Elisha Brown, Emma Bubola, Maddie Burakoff, Alyssa Burr, Christopher Calabrese, Julia Carmel, Zak Cassel, Robert Chiarito, Izzy Colón, Matt Craig, Yves De Jesus, Brendon Derr, Brandon Dupré, Melissa Eddy, John Eligon, Timmy Facciola, Bianca Fortis, Jake Frankenfield, Matt Furber, Robert Gebeloff, Thomas Gibbons-Neff, Matthew Goldstein, Grace Gorenflo, Rebecca Griesbach, Benjamin Guggenheim, Barbara Harvey, Lauryn Higgins, Josh Holder, Jake Holland, Anna Joyce, John Keefe, Ann Hinga Klein, Jacob LaGesse, Alex Lim, Alex Matthews, Patricia Mazzei, Jesse McKinley, Miles McKinley, K.B. Mensah, Sarah Mervosh, Jacob Meschke, Lauren Messman, Andrea Michelson, Jaylynn Moffat-Mowatt, Steven Moity, Paul Moon, Derek M. Norman, Anahad O’Connor, Ashlyn O’Hara, Azi Paybarah, Elian Peltier, Richard Pérez-Peña, Sean Plambeck, Laney Pope, Elisabetta Povoledo, Cierra S. Queen, Savannah Redl, Scott Reinhard, Chloe Reynolds, Thomas Rivas, Frances Robles, Natasha Rodriguez, Jess Ruderman, Kai Schultz, Alex Schwartz, Emily Schwing, Libby Seline, Rachel Sherman, Sarena Snider, Brandon Thorp, Alex Traub, Maura Turcotte, Tracey Tully, Jeremy White, Kristine White, Bonnie G. Wong, Tiffany Wong, Sameer Yasir and John Yoon.   ·   Data acquisition and additional work contributed by Will Houp, Andrew Chavez, Michael Strickland, Tiff Fehr, Miles Watkins, Josh Williams, Nina Pavlich, Carmen Cincotti, Ben Smithgall, Andrew Fischer, Rachel Shorey, Blacki Migliozzi, Alastair Coote, Jaymin Patel, John-Michael Murphy, Isaac White, Steven Speicher, Hugh Mandeville, Robin Berjon, Thu Trinh, Carolyn Price, James G. Robinson, Phil Wells, Yanxing Yang, Michael Beswetherick, Michael Robles, Nikhil Baradwaj, Ariana Giorgi, Bella Virgilio, Dylan Momplaisir, Avery Dews, Bea Malsky, Ilana Marcus, Sean Cataguni and Jason Kao.

About the data

In data for Massachusetts, The Times primarily relies on reports from the state. The state releases new data once a week. It released new data daily until July 2021 and on weekdays until July 2022. The state reports cases and deaths based on a person’s permanent or usual residence.

The Times has identified reporting anomalies or methodology changes in the data.

More about reporting anomalies or changes
  • March 14, 2022: Massachusetts changed its methodology for counting deaths to align with national guidance, resulting in a decrease of about 3,700 deaths.
  • Jan. 17, 2022: Massachusetts did not announce new cases and deaths for the Martin Luther King Jr. Day holiday.
  • Nov. 25, 2021: Massachusetts did not announce new cases and deaths for the Thanksgiving holiday.
  • Nov. 11, 2021: Massachusetts did not announce new data because of the Veterans Day holiday.
  • Oct. 11, 2021: Massachusetts did not release new data because of the holiday.
  • Sept. 6, 2021: The daily count could be artificially low because many jurisdictions did not announce new data on Labor Day.
  • Jan. 2, 2021: Massachusetts reported data for two days after reporting no data on New Year's Day.
  • Dec. 26, 2020: Massachusetts reported data for Dec. 25 and 26 after reporting no data on Christmas.
  • Nov. 27, 2020: Massachusetts reported data for Nov. 26 and Nov. 27 after reporting no data on Thanksgiving.
  • Sept. 2, 2020: Massachusetts removed 8,050 cases and 26 deaths after revising its methodology for probable cases and deaths.
  • Aug. 23, 2020: Massachusetts did not report new cases or deaths during data system maintenance.
  • June 30, 2020: Massachusetts removed duplicate reports, causing a decrease in the total number of deaths.
  • June 1, 2020: Massachusetts began reporting probable cases and deaths dating back to March 1, leading to a large one-day increase.
  • April 24, 2020: Massachusetts announced a backlog of cases from earlier in April.
  • As of Aug. 12, Massachusetts reports only lab-confirmed cases by county. The state previously included probable cases. Massachusetts did not report county-level updates from Aug. 12 to Aug. 17.

The tallies on this page include probable and confirmed cases and deaths.

Confirmed cases and deaths, which are widely considered to be an undercount of the true toll, are counts of individuals whose coronavirus infections were confirmed by a molecular laboratory test. Probable cases and deaths count individuals who meet criteria for other types of testing, symptoms and exposure, as developed by national and local governments.

Governments often revise data or report a single-day large increase in cases or deaths from unspecified days without historical revisions, which can cause an irregular pattern in the daily reported figures. The Times is excluding these anomalies from seven-day averages when possible. For agencies that do not report data every day, variation in the schedule on which cases or deaths are reported, such as around holidays, can also cause an irregular pattern in averages. The Times uses an adjustment method to vary the number of days included in an average to remove these irregularities.