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%
2/21/20212/27/2021Bronx37653455.2%
2/28/20213/6/2021Richmond41519784.48%
3/7/20213/13/2021Richmond39318754.77%
3/14/20213/20/2021Richmond43720844.57%
3/21/20213/27/2021Richmond43820864.83%
3/28/20214/3/2021Richmond46021955.2%
4/4/20214/10/2021Richmond45721774.64%
4/11/20214/17/2021Erie36633715.46%
4/18/20214/24/2021Richmond27413063.04%
4/25/20215/1/2021Lewis215574.77%
5/2/20215/8/2021Lewis276736.87%
5/9/20215/15/2021Lewis291776.72%
5/16/20215/22/2021Lewis185494.54%
5/23/20215/29/2021Cortland102492.05%
5/30/20216/5/2021Lewis64172%
6/6/20216/12/2021Schuyler4481.5%
6/13/20216/19/2021Schuyler4482.08%
6/20/20216/26/2021Hamilton4521.27%
6/27/20217/3/2021Richmond502421.36%
7/4/20217/10/2021Richmond492361.42%
7/11/20217/17/2021Richmond743551.88%
7/18/20217/24/2021Richmond1095202.42%
7/25/20217/31/2021Richmond1627753.25%
8/1/20218/7/2021Richmond22310643.57%
8/8/20218/14/2021Richmond26312533.71%
8/15/20218/21/2021Hamilton338156.2%
8/22/20218/28/2021Fulton3371818.28%
8/29/20219/4/2021St_Lawrence3653955.28%
9/5/20219/11/2021Hamilton5862611.21%
9/12/20219/18/2021St_Lawrence4414775.33%
9/19/20219/25/2021Chemung4723986.8%
9/26/202110/2/2021Fulton55229610.24%
10/3/202110/9/2021Chemung5634757.72%
10/10/202110/16/2021Chemung5664777.81%
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%
Allegany1/10/20211/16/20214412057.82%
Allegany11/29/202012/5/20204412058.98%
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%
Chemung10/10/202110/16/20215664777.81%
Chenango1/17/20211/23/20214672225.97%
Clinton1/3/20211/9/20215114136.83%
Columbia1/10/20211/16/20215623378.24%
Cortland12/6/202012/12/20205752757.47%
Delaware9/12/20219/18/20213301476.41%
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%
Genesee1/3/20211/9/202176343910.06%
Genesee12/13/202012/19/202076343910.51%
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%
Tompkins8/29/20219/4/20213553651.43%
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 10/17/2021.