NYS Counties with the most COVID-19 positive test results per 100K residents
FromToCountyNew Positives per
100K people		Actual
New Positives		% Tests
Positive
3/1/20203/7/2020Westchester44225.77%
3/8/20203/14/2020Westchester1414010.56%
3/15/20203/21/2020Westchester174169118.46%
3/22/20203/28/2020Westchester686664630.39%
3/29/20204/4/2020Rockland957311750.45%
4/5/20204/11/2020Rockland735239544.06%
4/12/20204/18/2020Bronx520738243.35%
4/19/20204/25/2020Rockland580189229.92%
4/26/20205/2/2020Sullivan30022729.56%
5/3/20205/9/2020Sullivan18814217.44%
5/10/20205/16/2020Sullivan18213815.66%
5/17/20205/23/2020Sullivan104798.08%
5/24/20205/30/2020Sullivan101775.72%
5/31/20206/6/2020Orleans64263.12%
6/7/20206/13/2020Oneida561301.74%
6/14/20206/20/2020Oneida521202.14%
6/21/20206/27/2020Oneida841932.69%
6/28/20207/4/2020Oneida671562.75%
7/5/20207/11/2020Onondaga371751.8%
7/12/20207/18/2020Oneida501172.04%
7/19/20207/25/2020Broome49951.86%
7/26/20208/1/2020Ulster571032.18%
8/2/20208/8/2020Herkimer53331.59%
8/9/20208/15/2020Hamilton6733.61%
8/16/20208/22/2020Essex109414.78%
8/23/20208/29/2020Essex75282.62%
8/30/20209/5/2020Otsego2091255.03%
9/6/20209/12/2020Otsego76462.59%
9/13/20209/19/2020Chemung93792.32%
9/20/20209/26/2020Chemung1551313.53%
9/27/202010/3/2020Chemung3082606.47%
10/4/202010/10/2020Chemung2812375.03%
10/11/202010/17/2020Chemung3392865.83%
10/18/202010/24/2020Chemung4703966.36%
10/25/202010/31/2020Tioga2611274.92%
11/1/202011/7/2020Chemung3252745.3%
11/8/202011/14/2020Allegany3761756.64%
11/15/202011/21/2020Allegany4352023.49%
11/22/202011/28/2020Chemung4754015.99%
11/29/202012/5/2020Oneida61314097.65%
12/6/202012/12/2020Oneida68515749.14%
12/13/202012/19/2020Genesee76343910.51%
12/20/202012/26/2020Genesee71941411.87%
12/27/20201/2/2021Oneida930213610.73%
1/3/20211/9/2021Herkimer102063113.28%
1/10/20211/16/2021Lewis88823513.78%
1/17/20211/23/2021Lewis73319411.65%
1/24/20211/30/2021Hamilton10824813.15%
1/31/20212/6/2021Hamilton834379.3%
2/7/20212/13/2021Bronx46766316.36%
2/14/20212/20/2021Bronx36551805.8%
Week with most COVID-19 positive test results, by county
CountyFromToNew Positives per
100K people		Actual
New Positives		% Tests
Positive
Albany1/3/20211/9/202158317919.28%
Allegany11/29/202012/5/20204412058.98%
Allegany1/10/20211/16/20214412057.82%
Bronx4/5/20204/11/2020569807350.99%
Broome1/3/20211/9/202164812439.47%
Cattaraugus12/27/20201/2/202149137810.24%
Cayuga12/27/20201/2/202190069512.49%
Chautauqua1/3/20211/9/202172192313.39%
Chemung1/3/20211/9/20215384546.97%
Chenango1/17/20211/23/20214672225.97%
Clinton1/3/20211/9/20215114136.83%
Columbia1/10/20211/16/20215623378.24%
Cortland12/6/202012/12/20205752757.47%
Delaware1/3/20211/9/20213121397.3%
Dutchess1/10/20211/16/202163118568.25%
Erie1/3/20211/9/202150146166.9%
Essex1/3/20211/9/20215492057.48%
Franklin1/17/20211/23/20214552298.71%
Fulton1/10/20211/16/202162533511.98%
Genesee12/13/202012/19/202076343910.51%
Genesee1/3/20211/9/202176343910.06%
Greene12/27/20201/2/202164830812.23%
Hamilton1/24/20211/30/202110824813.15%
Herkimer1/3/20211/9/2021102063113.28%
Jefferson1/10/20211/16/202153760110.3%
Kings1/10/20211/16/2021485124355.87%
Lewis1/10/20211/16/202188823513.78%
Livingston1/3/20211/9/202157736510.49%
Madison12/6/202012/12/20205553939.99%
Monroe12/13/202012/19/202061245458.83%
Montgomery1/3/20211/9/202179039113.48%
Nassau1/3/20211/9/2021776105498.71%
New_York1/10/20211/16/202137461013.62%
Niagara1/3/20211/9/202172015179.83%
Oneida12/27/20201/2/2021930213610.73%
Onondaga1/3/20211/9/202161528446.99%
Ontario1/3/20211/9/20215896489.7%
Orange1/10/20211/16/202155621269.16%
Orleans1/3/20211/9/202164226110.18%
Oswego1/3/20211/9/20215226169.29%
Otsego1/17/20211/23/20214152485.31%
Putnam1/3/20211/9/20216736669.98%
Queens1/17/20211/23/2021564127196.36%
Rensselaer1/3/20211/9/20216209909.19%
Richmond1/3/20211/9/202180938557.17%
Rockland3/29/20204/4/2020957311750.45%
Saratoga1/3/20211/9/2021656151010.34%
Schenectady1/3/20211/9/202169710849.59%
Schoharie1/10/20211/16/20214501409.8%
Schuyler1/3/20211/9/2021485876.55%
Seneca1/10/20211/16/20215361848.02%
St_Lawrence1/3/20211/9/20215495947.44%
Steuben1/3/20211/9/20215855617.68%
Suffolk1/3/20211/9/20218581271010.49%
Sullivan12/27/20201/2/20213902959.78%
Tioga1/3/20211/9/20214692288.13%
Tompkins1/3/20211/9/20212502580.73%
Ulster1/3/20211/9/20214568167.6%
Warren1/3/20211/9/20215363457.53%
Washington1/3/20211/9/20214472746.86%
Wayne1/3/20211/9/202156550910.01%
Westchester3/22/20203/28/2020686664630.39%
Wyoming1/3/20211/9/202181532713.33%
Yates1/3/20211/9/20215431359.64%

Data based on New York State Department of Health data. Note that early in the pandemic (and often later), large numbers of cases happened but were not detected. Population estimates from 2019 census estimates. More and more information is coming from the US Centers for Disease Control.

Last updated 2/21/2021.