Utah's state capital is further north because the 40 degree north line of latitude goes through both states and the capital of Illinois is below the line of latitude and Utah's is above it.
The only US state north of the 60 degree line is Alaska. The contiguous 48-states are below 50 degree line. The other US territories; e.g., Guam, American Samoa, US Virgin Islands, etc. are all south of the 50 degree line of latitude.
If you're referring to the 50 states of the USA, then every one of them is totally and completely north of 6 degrees north latitude.
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There is no such latitude.
washington, idaho, montana, north dakota, and part of minnesota
One and it is called Alaska
Latitude: 21 degree north Longitude: 103 degree west
The Latitude of Greenwich is 51° 28' 38" North.
North Sea
It's called a "pole" of the Earth's axis. "90° North latitude" is the north pole. "90° South latitude" is the south pole.