Actually, I love both kraut and kimchee. Good for you, too, as long as it is unpasturized.
Salt is as easy to get as water from the Chesapeake bay - go collect a gallon of bay water, pour it in a cookie sheet, set it in the sun, and let the water evaporate.
Water one gets from the Patomac river - right above great falls. That is where the water intakes are for DC, Southern MD, and NVA. Sure, it is treated with chlorine, et al. but it needn’t be. You can drink it right out of the river.
If one lives in MI - you are sitting on the biggest salt mine in the world. It is under the city of Detroit.
Funny, huh?
So that's pretty standard for pre-industrial age societies. Which is when most of the east coast cities were settled.
Now, in the industrial age, we can get salt anywhere, as long as the technology holds out.
/johnny