5G towers in Allen, TX

At least one phone has reported a 5G signal at that site, from any carrier. It comes from OpenCelliD, where phones log the cell they're connected to and what kind of radio it is. It's evidence, not a guarantee. A site without the label may still have 5G: many phones on 5G report the 4G cell they're anchored to, so 5G is undercounted, most of all for Verizon and AT&T. And it doesn't say which kind of 5G. Low-band 5G reaches about as far as 4G, mid-band about a mile, and millimeter-wave about a block.

It depends on the band and the terrain. Low-band signals can carry 10 to 30 miles over open country; in a city a site typically serves a mile or two. Mid-band 5G usually covers about a mile, and millimeter-wave 5G only a block or so. Hills, trees and building walls cut all of these down.

Your carrier may not be on that tower. Antennas also point in sectors, so a tower can be close but aimed away from you. Metal roofs, low-E windows and concrete block a lot of signal indoors. Check which carriers have been seen on the towers nearest you, not just how close they are.