^^^I call BS on "Jax not being a household name" This is 2019 buddy, not 1974. Jax is a major city in FL; no matter how you spin it, compare it with Tampa or Miami etc, it doesn't change that fact. Stop it with the downplaying....
Jacksonville is BY FAR the biggest 'Jacksonville" in the USA, but sometimes the city is listed as "Jacksonville, FL" because there are so many other cities with that name. It's really no different than a newspaper listing Kansas City, MO; Portland, OR; Rochchester, NY or Richmond, VA (which all have notable counterpart namesakes in other states).
If you don't know Jax by know, you are awful in US geography (and probably couldn't name 20 state capitals). I know every major and notable city in the US (I'm an average guy) it's really not that hard. That "where's Jax" charade was cute at first, now it's over.