The number of confirmed COVID-19 cases keep increasing nationwide and across the state. Locally, some areas of Delaware County are affected more than others, write Sean Adams and Megan Lavey-Heaton for the Penn Live Patriot-News.

The highest percentage increase in Delaware County during a seven-day period ending Jan. 6 was ZIP Code 19022 (Ridley Park/Tinicum/Folsom.) Confirmed cases grew from 172 to 193, or 12 percent.

ZIP Code 19074 (Glenolden/Prospect Park/Norwood) recorded a rise of 10 percent, with cases rising from 319 to 351.

In ZIP Code 19078 (Ridley Park/Tinicum/Folsom) the number of cases went from 624 to 678, or 9 percent.

The same percentage was recorded in ZIP code 19014 (Aston/Boothwyn/Upper Chichester), 19061 (Boothwyn/Marcus Hook/Chester/Trainer), 19081 (Swarthmore/Springfield) and 19018 (Aldan/Clifton Heights).

Cases increased from 814 to 890, 748 to 819, 317 to 344, and 1091 to 1188, respectively.

The rates of COVID-19 infection in each ZIP Code are provided statewide by the Pennsylvania Department of Health in comparison to infection rates for the prior seven days.

Read more about ZIP codes with the biggest increases in COVID-19 cases at the Penn Live Patriot-News by clicking here.