American location turns up in atlas (5,4)

I believe the answer is:

saint paul

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'american location' is the definition.
The definition suggests a singular noun which matches the answer.

'turns up in atlas' is the wordplay.
'turns' indicates anagramming the letters.
'up'+'in'+'atlas'='upinatlas'
'upinatlas' is an anagram of 'SAINT PAUL'.

Can you help me to learn more?

(Other definitions for saint paul that I've seen before include "Convert" , "apostle" , "capital of state" .)

I've seen this clue in The Independent.

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