Montgomery County COVID-19 Case Counts

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The information in the case count tables is based on the Maryland Department of Health data released on 1/15/2021.

  • Counts may be different from those reported by Maryland, due to sources of reporting.
  • Cases with unknown sex/age are excluded.
  • Rates are per 100,000 population.
  • Case Fatality Rate = (Number of Deaths/Number of Cases)*100

We update the case count tables on Tuesdays and Fridays. For a daily updates on cases and deaths, see the State of Maryland COVID-19 Data Dashboard.

Confirmed Cases

  • The counts may be different than those reported by MDH due to sources of reporting.
  • Cases with unknown sex/age are excluded (n=3).
Age Group Male Female Total
Count Rate per 100K population Count Rate per 100K population Count Rate
0-9 years 1,592 2,309.9 1,364 2,067.4 2,956 2,191.3
10-19 years 2,501 3,723.5 2,699 4,220.9 5,200 3,966.1
20-29 years 4,437 7,144.1 4,895 7,964.7 9,332 7,552.2
30-39 years 4,414 6,260.2 4,773 6,424.9 9,187 6,344.7
40-49 years 4,190 6,115.0 4,493 6,000.9 8,683 6,055.4
50-59 years 3,794 5,392.0 3,970 5,145.4 7,764 5,263.1
60-69 years 2,483 4,676.2 2,458 4,085.7 4,941 4,362.5
70-79 years 1,181 4,443.0 1,369 3,839.9 2,550 4,097.5
80+ years 980 6,480.6 1,711 7,060.6 2,691 6,837.8
Total years 25,572 5,090.1 27,732 5,157.1 53,304 5,124.7

Confirmed Cases by Age and Month

  • Cases with unknown sex/age are excluded (n=3).
  • Row percent is displayed, representing the percentage of total cases per month falling within each age group.
  • The sum of monthly cases may not add up to total due to invalid year/month combination.
Age Group 0-9 years 10-19 years 20-29 years 30-39 years 40-49 years 50-59 years 60-69 years 70-79 years 80+ years TOTALS
March Case Count* 1 24 112 139 135 146 116 57 31 761
March Case % 0.1 3.2 14.7 18.3 17.7 19.2 15.2 7.5 4.1 100
April Case Count 84 156 539 815 877 820 562 369 574 4,796
April Case % 1.8 3.3 11.2 17.0 18.3 17.1 11.7 7.7 12.0 100
May Case Count 280 409 980 1,271 1,237 1,019 689 398 616 6,899
May Case % 4.1 5.9 14.2 18.4 17.9 14.8 10.0 5.8 8.9 100
June Case Count 158 266 495 580 484 414 244 100 111 2,852
June Case % 5.5 9.3 17.4 20.3 17.0 14.5 8.6 3.5 3.9 100
July Case Count 130 315 624 522 419 378 200 93 68 2,749
July Case % 4.7 11.5 22.7 19.0 15.2 13.8 7.3 3.4 2.5 100
August Case Count 143 317 502 416 339 247 187 92 81 2,324
August Case % 6.2 13.6 21.6 17.9 14.6 10.6 8.0 4.0 3.5 100
September Case Count 134 452 625 406 327 315 182 79 57 2,577
September Case % 5.2 17.5 24.3 15.8 12.7 12.2 7.1 3.1 2.2 100
October Case Count 220 400 705 646 602 528 290 141 111 3,643
October Case % 6.0 11.0 19.4 17.7 16.5 14.5 8.0 3.9 3.0 100
November Case Count 602 876 1,670 1,453 1,411 1,333 738 395 329 8,807
November Case % 6.8 9.9 19.0 16.5 16.0 15.1 8.4 4.5 3.7 100
December Case Count 886 1,364 2,176 2,111 2,007 1,826 1,212 567 532 12,681
December Case % 7.0 10.8 17.2 16.6 15.8 14.4 9.6 4.5 4.2 100
January Case Count 318 621 904 827 845 738 521 259 181 5,214
January Case % 6.1 11.9 17.3 15.9 16.2 14.2 10.0 5.0 3.5 100
Total Case Count 2,956 5,200 9,332 9,187 8,683 7,764 4,941 2,550 2,691 53,304
Total Case % 5.5 9.8 17.5 17.2 16.3 14.6 9.3 4.8 5.0 100

Cases by Race/Ethnicity and Month

  • Row percent is displayed, representing the percentage of total cases per month falling within each race/ethniciy group.
  • The sum of monthly cases may not add up to total due to invalid year/month combination.
Race/Ethnicity Non-Hispanic White Non-Hispanic Black Non-Hispanic Asian Hispanic Other Unknown TOTALS
March Case Count 241 194 43 122 64 97 761
March Case % 31.7 25.5 5.7 16.0 8.4 12.7 100
April Case Count 948 1,071 218 1,682 278 599 4,796
April Case % 19.8 22.3 4.5 35.1 5.8 12.5 100
May Case Count 1,078 874 250 3,026 513 1,158 6,899
May Case % 15.6 12.7 3.6 43.9 7.4 16.8 100
June Case Count 443 277 91 1,240 161 640 2,852
June Case % 15.5 9.7 3.2 43.5 5.6 22.4 100
July Case Count 574 541 84 823 164 563 2,749
July Case % 20.9 19.7 3.1 29.9 6.0 20.5 100
August Case Count 361 403 72 619 100 770 2,325
August Case % 15.5 17.3 3.1 26.6 4.3 33.1 100
September Case Count 450 325 52 531 128 1,092 2,578
September Case % 17.5 12.6 2.0 20.6 5.0 42.4 100
October Case Count 586 398 118 1,197 262 1,082 3,643
October Case % 16.1 10.9 3.2 32.9 7.2 29.7 100
November Case Count 1,448 1,038 318 2,455 651 2,897 8,807
November Case % 16.4 11.8 3.6 27.9 7.4 32.9 100
December Case Count 2,530 1,837 458 3,202 1,228 3,427 12,682
December Case % 19.9 14.5 3.6 25.2 9.7 27.0 100
January Case Count 1,049 679 135 1,215 465 1,671 5,214
January Case % 20.1 13.0 2.6 23.3 8.9 32.0 100
Total Case Count 9,709 7,637 1,839 16,112 4,014 13,996 53,307
Total Case % 18.2 14.3 3.4 30.2 7.5 26.3 100

Cases by ZIP Code

ZIP codes with less than 15 cumulative cases have been redacted from this report.

Open "Cases by ZIP Code" in a new window - view more easily on mobile devices!

Deaths by Age and Gender

***Rates are suppressed if frequency is less than 10, due to statistical instability.

Age Group Male Female Total
Count Rate per 100K population Count Rate per 100K population Count Rate per 100K population
0-9 years 0 0.0 0 0.0 0 0
10-19 years 0 0.0 0 0.0 0 0
20-29 years 0 0.0 0 0.0 0 0
30-39 years 13 18.4 4 N/A*** 17 11.7
40-49 years 25 36.5 14 18.7 39 27.2
50-59 years 60 85.3 15 19.4 75 50.8
60-69 years 114 214.7 44 73.1 158 139.5
70-79 years 133 500.4 110 308.5 243 390.5
80+ years 309 2,043.4 332 1,370.0 641 1,628.8
Total years 654 130.2 519 96.5 1,173 112.8

Deaths by Race/Ethnicity and Month

Row percent is displayed, representing the percentage of total deaths per month falling within each race/ethniciy group.

Race/Ethnicity Non-Hispanic White Non-Hispanic Black Non-Hispanic Asian Hispanic Other Unknown TOTALS
March death Count 0 1 3 1 0 0 5
March death % 0.0 20.0 60.0 20.0 0.0 0 100
April death Count 137 80 20 34 10 0 281
April death % 48.8 28.5 7.1 12.1 3.6 0 100
May death Count 150 64 31 62 10 0 317
May death % 47.3 20.2 9.8 19.6 3.2 0 100
June death Count 44 16 12 37 1 0 110
June death % 40.0 14.5 10.9 33.6 0.9 0 100
July death Count 16 7 3 20 1 0 47
July death % 34.0 14.9 6.4 42.6 2.1 0 100
August death Count 15 4 0 9 0 0 28
August death % 53.6 14.3 0.0 32.1 0.0 0 100
September death Count 12 4 2 6 1 0 25
September death % 48.0 16.0 8.0 24.0 4.0 0 100
October death Count 15 2 2 5 2 0 26
October death % 57.7 7.7 7.7 19.2 7.7 0 100
November death Count 50 9 12 19 3 0 93
November death % 53.8 9.7 12.9 20.4 3.2 0 100
December death Count 101 17 12 34 3 1 168
December death % 60.1 10.1 7.1 20.2 1.8 0.6 100
January death Count 37 13 9 10 2 2 73
January death % 50.7 17.8 12.3 13.7 2.7 2.7 100
Total death Count 577 217 106 237 33 3 1,173
Total death % 49.2 18.5 9.0 20.2 2.8 0.3 100
Total death rate per 100K population 127.8 112.8 65.7 114.5 N/A N/A 112.8

Deaths by ZIP Code

map showing deaths by ZIP Code

Based on ZIP code of residence

Deaths by ZIP Code Data

ZIP Code Number of Deaths
20706 1
20723 1
20740 1
20746 1
20783 2
20810 1
20814 37
20815 39
20816 11
20817 39
20818 1
20832 24
20833 6
20837 2
20839 3
20841 6
20842 2
20850 75
20851 6
20852 70
20853 30
20854 48
20855 12
20860 12
20861 3
20866 14
20868 1
20871 10
20872 12
20874 32
20876 17
20877 44
20878 32
20879 22
20882 6
20886 37
20895 32
20901 38
20902 77
20903 32
20904 97
20905 15
20906 119
20910 57
20912 30
21050 1
21113 1
21771 1
21797 1

Nursing Home Cases and Deaths

Numbers may not match with those reported by MDH due to reporting lags.

Case Fatality Rate = (# deaths / # cases) * 100

Deaths Cases Deaths Case Fatality Rate
Nursing Home 3,313 533 16.1
Non-Nursing Home 49,994 640 1.3
Total 53,307 1,173 2.2

Rt (time-varying reproduction number)

See Rt graph previously on this page.


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