Special Report

These Are the Counties In the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metro Area Where COVID-19 Is Growing the Fastest

John Moore / Getty Images News via Getty Images

After adding over 682,000 new cases throughout the last week, the U.S. now has more than 48.2 million confirmed cases of COVID-19. There have been more than 770,000 COVID-19-related deaths — the highest death toll of any country.

New cases continue to rise at a steady rate. In the past week, there were an average of 0.8 daily new coronavirus cases per 100,000 Americans — essentially unchanged from the week prior, when there were an average of 1.7 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.

The Philadelphia-Camden-Wilmington, PA-NJ-DE-MD, metro area consists of Philadelphia County, Montgomery County, Bucks County, and eight other counties. In the past week, there were an average of 0.8 new coronavirus cases every day per 100,000 Philadelphia residents, in line with 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 2.3 daily new cases per 100,000 Philadelphia residents.

The spread of coronavirus depends on a variety of factors and can vary even between neighboring counties. Within the Philadelphia-Camden-Wilmington metro area, COVID-19 is growing the fastest in Bucks County. There were an average of 1.4 new cases per day per 100,000 residents in Bucks County during the past week, the most of the 11 counties in Philadelphia with available data.

Case growth in the Philadelphia metro area varies widely at the county level. In New Castle County, for example, there were an average of 0.4 new cases per day per 100,000 residents in the past week — the least of any county in Philadelphia and far more than the case growth rate in Bucks County.

While Bucks County is driving the growth of COVID-19 in the Philadelphia area, it does not have the highest incidence of cases overall. As of December 2, there were a total of 12,598.6 confirmed cases per 100,000 residents in Bucks County, the sixth most of the 11 counties in the metro area. For comparison, the U.S. has so far reported 14,869.9 cases per 100,000 Americans nationwide.

In order to slow the spread of COVID-19, city and county governments have ordered the closure of thousands of consumer-facing businesses. These measures have led to widespread job loss and record unemployment. In Bucks County, unemployment peaked at 15.0% in April 2020. As of June 2021, the county’s unemployment rate was 5.3%.

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 December 2. 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 Pennsylvania 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 December 2 New daily cases per 100,000, week ending November 25 Cumulative cases per 100,000 Cumulative deaths per 100,000
1 Bucks County 626,806 1.4 2.3 12,598.6 236.3
2 Gloucester County 291,165 1.0 2.4 14,103.3 259.3
3 Camden County 506,738 1.0 2.7 14,216.8 292.9
4 Philadelphia County 1,579,075 0.9 2.7 12,121.1 259.5
5 Cecil County 102,552 0.9 1.4 9,249.9 185.3
6 Salem County 62,990 0.9 3.5 13,446.6 339.7
7 Delaware County 564,554 0.8 2.8 11,720.2 270.5
8 Montgomery County 823,823 0.8 2.1 11,238.6 231.2
9 Chester County 519,560 0.5 1.6 10,667.3 174.2
10 Burlington County 445,702 0.5 2.3 13,146.0 219.2
11 New Castle County 556,165 0.4 1.4 15,658.3 189.9

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