Heh, around here there are very few left. Almost all cable/phone is underground, towns do pull overhead, but on power poles. In high school I worked for a pole inspection company during the summers. One of the toughest jobs I have ever had. We only worked on power poles. Dig a hole all the way around, 18" deep and probably 8-10" out. Dig holes all morning to get ahead of the head honcho pole inspector, he would scrape and look for damage and rot, drill a 3/8 or so hole all the way to center of pole. Put tool to check if core is rotten. Pound a wooden plug in. Document and tag it with round aluminum stamped circle. Next guy would treat pole with a brush out of a 5 gallon bucket full of CuRap 20 and then wrap in brown paper/plastic wrap. Then the crap job of backfilling, which I got stuck with being the youngest. My blisters had blisters, cracks and sore hands. I was one tough SOB after years of that.
We did run out of the blue CuRap 20 a couple times and went to old oily creasote. I will say, that crapped burned when it got on you, for a few days. For some reason I got stuck treating poles with the nasty stuff.