The number of Bath homes with just a black and white TV has dropped to 20.
Across the UK, the number of families watching on black and white TVs dropped 12 per cent in the past year, with fewer than 12,000 sets now in use nationwide.
With advances in technology, the demand for black and white licences has been in steady decline for years.
At the turn of the millennium there were 212,000 black and white licences, but by 2003 that number had shrunk to 93,000. Just three years later, in 2006, the number was fewer than 50,000.
Today there are 11,550 black and white licences in force across the UK, nearly 48 years since colour transmissions began.
TV Licensing South West spokesman Richard Chapman said: "Today's figures show, even in the digital age, more than 11,000 homes still watch their favourite programmes on black and white televisions. We may be on the brink of losing black and white sets to the history books, but older technology will always be replaced by exciting new ways of watching live. It's important that no matter how you watch live TV, whether on a black and white set, or online, you're correctly licensed to do so."
Iain Logie Baird, associate curator at the National Media Museum in Bradford, and grandson of television inventor John Logie Baird, added: "Despite over 25 million people opting for a colour TV licence in the UK, it may be some time before the black and white television disappears completely from our living rooms.
"The museum has hundreds of black and white television sets in its collection and there will always be a small group of people who prefer monochrome images, collect vintage sets or just don't want to throw away a working piece of technology."
The cost of a black and white TV licence remains frozen at £49 until the BBC Charter review in 2016, while a colour licence costs £145.50.
