'83 was the first year of the fork being completely painted; '82 and earlier were chrome lowers. '83 was the only year of that style of brake lever, center-pull brakes, and crankset. And, '85 was the last year of the "Schwinn" being on the downtube; switched to the seatpost, in '86. The color throws me off, as black metallic and sandpiper are what's shown in the catalog and your bike appears to be dark green.
I think it's an '83.
As to where it was made, I'm not sure.