The major US carriers are duking it out to offer the best 5G networks, and AT&T is, of course, one of the main contenders. While their growing 5G network doesn't boast the same throughput as Verizon's Ultra Wideband mmWave 5G, AT&T's sub-6GHz provides far better coverage. Today, the carrier announced they've reached a big milestone. The carrier's sub-6GHz 5G network is now available nationwide.
Now, in the context of coverage, the FCC dictates that "nationwide" means more than 200 million people in the U.S. are blanketed in coverage. AT&T activated 40 new markets today, bringing the total number of covered people to 205 million (and 395 markets). So while not everyone in the country is truly covered, it's enough for the company to say their 5G network is nationwide.
AT&T is still a bit behind T-Mobile's 5G coverage both in terms of speed (especially after the latter's acquisition of Sprint's mid-band frequencies) and coverage. Both are a bit behind Verizon when it comes to speeds. AT&T and T-Mobile, however, are focusing on the mid- and low-band, while Verizon has the faster and more limited mmWave. Verizon currently doesn't offer anything in the mid- to low-band spectrums, in contrast. Of course, all of this is somewhat of a moot point since the vast majority of people don't have 5G-capable phones yet.
Check for AT&T 5G coverage in your area here.