In the Johnny Cash and June Carter Cash song 'Jackson', which Jackson town are they referring to? There must be about 20 of them!

There has been much speculation regarding which Jackson the song is about, but Wheeler said: "Actually, I didn't have a specific Jackson in mind. I just liked the sharp consonant sound, as opposed to soft-sounding words like Nashville." Though Wheeler had no particular Jackson in mind when writing the song, subsequent recordings have narrowed attributions to Jackson, Tennessee. The previous source also quotes Charlie Daniels as having recorded "Jackson" with these lines, "I ain't talking 'bout Jackson, Mississippi. I'm talking 'bout Jackson, Tennessee" And, Johnny Cash is quoted in the video from the same source: "Well, I was gonna take her down to see Carl Perkins in Jackson." Carl Perkins lived in Jackson, Tennessee.