Is Florida the only place that has Everglades?
Yes, honey. And Frannce is the place that has Paris.
Um, there is a Paris, Texas you know.
The only place I know of called the Everglades (capitalized) is the one in Florida. However there is a common noun everglades (lower-case), meaning a marshy area covered with grass. I’m sure there are a lot of everglades.
Dagnabit, why do you ask this when I am at home! 
Seriously, my work deals essentially with Florida and its environment. (I will be in to work at 7 am (earlier than normal), so I can find verification or refutation or my statements.)
As far as I can state without my reference materials smack dab in front of me, the name ‘Everglades’ (captial E) refers to a specific geographic area (south Florida), ‘everglades’ (lowercase ‘e’) to the habitat that is found there.
The Everglades (capital ‘E’) has usually been called the “River of Grass” (as per the Marjorie Stoneman Douglas “The Everglades: River of Grass” - excellent book) when in reality it is a river of sedge (any of numerous grasslike plants of the family Cyperaceae, having solid stems, leaves in three vertical rows, and spikelets of inconspicuous flowers, with each flower subtended by a scalelike bract). [Pat me on the back, I memorized that!]
Only about 2/3 of the original Everglades remains ‘wild’; quite a bit taken up by housing developments, water management diversification and sugar farming.
Story has it that the USPS has assigned ZIP code designations to every square mile of the Everglades, in past anticipation of construction and development.
Again, do not quote me on this until I can verify everything at work tomorrow! At least I can give you information to start. 
(dang, those 's and u/u’s are hard to keep track of!)
Well, huh. I was sitting here thinking, “Maybe what Sunrise meant was, ‘is Florida the only place that has wetlands like the Everglades’?” So I went looking, and hush my mouth if the answer isn’t, “No. There’s no other place like the Everglades.” I didn’t know that.
Yes, I know and you know, but most people know about that Paris.
I was lost. She capitalized Everglades, but omiitted the article. Of course, the are many generic everglades, or swamps, or marshes. But again, search engines are for searchers. This MB is for polite chat. And it’s Sunday, my brain is off, too.