"in a location" is correct and usable in written English.
You can use it when you need to refer to a specific spot, such as in a sentence like: "We found the missing documents in a location outside the office."
It will be in a location not far from EduCity.
Punchdrunk's The Drowned Man: A Hollywood Fable begins on Thursday in a location near Paddington station.
The park is in a location where other groups have been denied permits to gather.
"The suggestion box should be in a location where it is easy to see".
Both wanted to be in a location easily reached by mass transit.
Tap in a location, and Vindigo arranges your options accordingly, relative to the closest cross-streets.
The new house is a few blocks away, in a location the Balks declined to identify.
This staff should be in a location that permits private, face-to-face discussions.
Any process in which a protein is maintained in a location and prevented from moving elsewhere.
"As long as the vortices are fixed in a location they can't cause havoc," Davis said.
He found it in a location predicted by apparent perturbations in the orbit of Neptune.
