If you head to your wireless carrier's website, chances are, they will provide a coverage map so you can see if your region is a good fit for the service. While this is good, it can tend to be more of a general overview of service availability without many details.
Luckily, T-Mobile's Chief Technical Officer Neville Ray has released a detailed list showing off what areas support the carrier's LTE-Advanced (LTE-A) network. The six-page long list gives users a detailed break down of each state and what areas offer LTE-A versus LTE-A with carrier aggregation, 4×4 MIMO, and 256QAM. These technologies shouldn't be confused with the carrier's LTE-U rollout, which is still a bit scarce at the moment.
Those curious about their city and how it stacks up against the rest of the United States can check out the list by downloading the PDF. As of November, over 920 areas can make use of LTE-Advanced technology, with 430 of those featuring the superior version boasting carrier aggregation plus 4×4 MIMO and 256QAM. Of course, while your city might have LTE-A with the "trifecta" of additional functionalities, you will still need to have a compatible handset that can take full advantage of the service.