"off the city" is correct and usable in written English.
You can use it to refer to something that is outside of a city. For example, "We took a day trip off the city to explore the countryside."
He wants to save money and live off the city.
The outbound train quickly shrugs off the city, carving between the benign semis of Metroland.
Ride it like a regular bike until I get off the city streets, he tells me.
The regime struck back by sealing off the city and shelling it without restraint.
By March 1864 Zeng had sealed off the city with a line of forts and breastworks.
Hoping to keep them off, the city says it will appeal Judge Sprizzo's ruling.
The security forces sealed off the city centre against the angry poor, most of whom had voted for Mr Odinga.
Orestes, Agamemnon's son, is freed, the Furies packed off; the city-state triumphs, law triumphs, the dark dream fades away.
Just before kick-off, the City faithful held aloft a banner which summed it up: "Untouchable, unstoppable, unforgettable".
The couple, who met on the set of "The Hills" spin-off "The City" in 2008, officially began dating in 2012.
"It shows off the city in a bright light, pardon the pun.
