> Portland, where I live, is the last major city to not have fluoride in the water. Kind of depends how you track things I'd think. New Jersey, the state with

> Portland, where I live, is the last major city to not have fluoride in the water. Kind of depends how you track things I'd think. New Jersey, the state with the highest population density in the US, largely doesn't put fluoride in the water outside of a few municipalities. There's no fluoride in the water in almost the entirety of Hudson, Essex, and Bergen counties, which are located near NYC and include the cities of Newark and Jersey City. Combined population of those three counties is over 2.5 million people.