Unless you think there is a merman city at the bottom of Lake Michigan, there are no cities at those coordinates. 42° N, 87° W lies in the middle of the southern part of Lake Michigan.
Evanston, Illinois lies at about 42° N, 87.7° W (N 42° W 87° 41') --- so about 42° N 88° W
Chicago, Illinois lies at about 41.8°N, 87.6° W (N 41° 48' W 87° 36') --- so about 42° N 88° W
Gary, Indiana lies at about 41.6° N, 87.4° W (N 41° 36' W 87° 18') --- so about 42° N 87° W --- the closest to a match.
Michigan City, Indiana, Bridgeman, Michigan, and St. Joseph, Michigan also lie in the same vicinity.
caviler
That will get you just off the coast in-between Brick Township and Toms River in New Jersey.
chigago settle
These coordinates are in the southern end of Lake Michigan, so nearby cities would include Chicago, IL and Gary, IN.
Those co-ordinates would place you close to the city of Decatur - in Illinois.
Wauconda IL.
That is not right it is Springfield
Chicago
That's near Maracaibo.
This is in the middle of the Sahara Desert and not near any city.
Reno, Nevada.
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44 degrees north latitude and 80 degrees west longitude is near, but not in, Orangeville, Ontario, Canada ‎
That's near Maracaibo.
King City is located near Latitude 43 degrees North, by Longitude 79 degrees West. That is, north of Toronto.
This is in the middle of the Sahara Desert and not near any city.
Oslo, Norway.
Milan, Italy
Athens, Greece.
That's near Vienna.
Reno, Nevada.
?
Oslo, Norway
Agadir, Morocco
That's near Cairo, Egypt.