The most common and most likely answer to this crossword clue is the 3 plus 4 letter word SAN JOSE
S
A
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J
O
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E
More clues leading to the result SAN JOSE
- US city jeans so fancy
- A New Jersey sailor visiting centre of Montserrat's capital
- Sailor wearing loose jeans in US city
- Band leader leaving instruments in southeast capital
- New-style jeans so OK for an American city
- Not mad about Jack, a sailor in US city +
- Capital city where silly season is around the beginning of July
- Around 1st of January season breaks up in city
Buddy explains!

The straight part
We know that "US city" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case us city = san jose.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.