After adding over 702,000 new cases throughout the last week, the U.S. now has more than 81.9 million confirmed cases of COVID-19. There have been more than 990,000 COVID-19-related deaths — the highest death toll of any country.

New cases continue to rise at a faster rate. In the past week, there were an average of 26.7 daily new coronavirus cases per 100,000 Americans — an increase from the week prior, when there were an average of 20.3 daily new coronavirus cases per 100,000 people.

While COVID-19 has spread to nearly every part of the country, cities continue to be the sites of major outbreaks. Experts agree that the virus is more likely to spread in group settings where large numbers of people routinely have close contact with one another, such as colleges, nursing homes, bars, and restaurants. Metropolitan areas with a high degree of connectivity between neighborhoods and a large population may be particularly at-risk.

In the 50 largest metro areas, the incidence of coronavirus grew at an average rate of 28.9 new cases a day per 100,000 residents in the past week — 15.1% greater than the case growth in all counties outside of metro areas.

The Louisville/Jefferson County, KY-IN, metro area consists of Jefferson County, Clark County, Bullitt County, and seven other counties. In the past week, there were an average of 20.0 new coronavirus cases every day per 100,000 Louisville/Jefferson County residents, less than the national figure. The metro area’s average daily case growth in the most recent week is essentially unchanged from the week prior, when there was an average of 17.7 daily new cases per 100,000 Louisville/Jefferson County residents.

The spread of coronavirus depends on a variety of factors and can vary even between neighboring counties. Within the Louisville/Jefferson County metro area, COVID-19 is growing the fastest in Henry County. There were an average of 27.8 new cases per day per 100,000 residents in Henry County during the past week, the most of the 10 counties in Louisville/Jefferson County with available data.

Case growth in the Louisville/Jefferson County metro area varies widely at the county level. In Washington County, for example, there were an average of 2.2 new cases per day per 100,000 residents in the past week — the least of any county in Louisville/Jefferson County and far more than the case growth rate in Henry County.

Just as Henry County is driving the growth of COVID-19 in the Louisville/Jefferson County area, it also has the highest incidence of cases overall. As of May 19, there were a total of 30,482.1 confirmed cases per 100,000 residents in Henry County, the most of the 10 counties in the metro area. For comparison, the U.S. has so far reported 25,247.6 cases per 100,000 Americans nationwide.

The pandemic has led to the closure of thousands of consumer-facing businesses around the country. These changes have led to widespread job loss and record unemployment. In Henry County, unemployment peaked at 16.1% in April 2020. As of June 2021, the county’s unemployment rate was 5.2%.

To determine the county in every metropolitan area where COVID-19 is growing the fastest, 24/7 Wall St. compiled and reviewed data from state and local health departments. We ranked counties according to the average number of new daily COVID-19 cases per 100,000 residents in the seven days ending May 19. To estimate the incidence of COVID-19 at the metropolitan level, we aggregated data up from the county level using boundary definitions from the U.S. Census Bureau. Population data used to adjust case and death totals came from the U.S. Census Bureau’s 2019 American Community Survey and are five-year estimates. Unemployment data is from the Bureau of Labor Statistics and is not seasonally adjusted.

These are all the counties in Kentucky where COVID-19 is slowing (and where it’s still getting worse).

Rank in MSA	County	Population	New daily cases per 100,000, week ending May 19	New daily cases per 100,000, week ending May 12	Cumulative cases per 100,000	Cumulative deaths per 100,000
1	Henry County	15,911	27.8	24.2	30,482.1	333.1
2	Jefferson County	767,419	21.8	19.8	29,807.6	308.3
3	Oldham County	65,967	21.4	17.3	28,142.9	219.8
4	Shelby County	47,325	20.8	12.4	28,414.2	342.3
5	Clark County	116,507	19.6	16.6	27,141.7	339.9
6	Bullitt County	80,171	17.8	17.5	27,264.2	280.7
7	Floyd County	77,320	15.0	11.9	24,861.6	390.6
8	Spencer County	18,680	13.8	18.4	28,881.2	315.8
9	Harrison County	39,940	11.3	6.3	27,290.9	345.5
10	Washington County	27,848	2.2	3.7	21,592.2	305.2

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