Caswell County Free At-Home COVID-19 Tests January 19, 2022 jrmillner74 Comments are off for this post Share: Free at-home COVID-19 tests are being offered via the USPS. According to the USPS website, households in the U.S. are able to order ONE SET of 4 free at-home COVID-19 tests. There are a few things that people should know about ordering: Tests are completely free. Limit of one order per residential address. One order includes 4 individual rapid antigen COVID-19 tests Orders ship free of charge starting in late January. Orders will usually ship within 7-12 days. If you need a COVID-19 test now, please see where your nearest testing site is by visiting HERE.