Call them and ask, my power company has several offices in the area that accept cash. My ISP doesn't, but will direct you to a Western Union office where you c

Call them and ask, my power company has several offices in the area that accept cash. My ISP doesn't, but will direct you to a Western Union office where you can pay with cash, all you need is your account number. Other utility companies let you pay with cash at various contracted 'payment agencies', which they can direct you to if you ask. As far as I'm aware, utility bills are all debts (money owed for a service already given), so they're required by law to accept cash one way or the other. It's not the same as going to a shop and putting items in your cart; there is no debt in that case so they aren't required to accept cash. (Also, in practice, mailing cash is a lot more reliable than most people make it out to be.)