On March 19, 2021, the Biden Administration reached its goal of administering 100 million doses of the COVID-19 vaccine since President Biden’s inauguration on January 20, 2021, by closing the day at 118,313,818. As of that day, over one-fifth (23.5%) of the U.S. population had received at least one dose of the vaccine.

Vaccine distribution has quickened in recent months as states have expanded eligibility to larger segments of the population, but overall there is wide variation in which populations states are prioritizing for vaccination and how they are distributing their vaccine supply. As such, vaccine roll-out has progressed at different speeds in each state across the country. The map below shows the share of the population in each state with at least one dose administered as of March 19.

As of the date the Biden Administration met its 100 million doses goal, more than one quarter of the populations in Connecticut (28.4%), New Mexico (31.1%), Alaska (29.3%), and South Dakota (28.9%) had received at least one dose of the vaccine. In comparison, 16.7% of the population in Georgia and 19.1% of the population in Alabama had received at least one dose as of March 19.