COUNTY COVID-19 TRACKER

About this site

This site is intended for educational and policy making audiences. It contains U.S., state, and county COVID-19 cases and deaths and associated metrics since Jan. 22, 2020. 
 Joe Nation, Ph.D., a former state legislator and current university professor, created this site.  Glitz Technology provided technical support.
 

Data and Methodology

The primary data source for this website is the COVID-19 Dashboard by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University
 

Demographic data are from these databases:
State & County Resident Population by Multi-race/Ethnicity and Age Group
Current Population Density
State, County, and City Land and Water Area
 

As indicated in the Glossary, some categories require simple calculations, e.g., Cases per 100,000 population equals the number of reported cases on a given date divided by the estimated April 1, 2020 population.
 

Glossary

Term

Definition

Average daily change in cases previous 14 days (%)

Average daily change (geometric, or compounded) in reported cases in the previous 14 days, measured in percent

Average daily change in cases previous 7 days (%)

Average daily change (geometric, or compounded) in reported cases in the previous 7 days, measured in percent

Cases per 100,000 population

Number of reported cases on a given date divided by the estimated April 1, 2020 population

Change in cases previous 14 days

Change in the number of reported cases over the preceding 14 days

Change in cases previous 7 days

Change in the number of reported cases over the preceding 7 days

Death rate

Number of reported deaths divided by the number of reported cases on a given date

Deaths per 100,000 population

Number of reported deaths divided by the estimated April 1, 2020 population

New daily cases

Change in reported cases from the previous day

New daily deaths

Change in reported deaths from the previous day

Total cases

Number of reported cases on a given date

Total cases, 3-day average

Number of reported cases averaged over a three-day period

Total deaths

Number of reported deaths on a given date

Total deaths, 3-day average

Number of reported deaths averaged over a three-day period