"hills area" is correct and usable in written English.
You can use it to describe an area with many hills, for example: "The Amalfi Coast is a beautiful hills area in southern Italy."
The pitchman for spray-on hair, food dehydrators and Showtime Rotisserie BBQs, bought a Beverly Hills-area home for an estimated $7 million, according to published reports.
Arnold has listed his Beverly Hills-area home for $3.25 million, after unsuccessfully trying to sell it in 2001 for $3.4 million, according to the Los Angeles Times.
Mark Wahlberg finally sells his Beverly Hills-area mansion.
Oscar-winner Sandra Bullock has purchased a Beverly Hills-area estate for $22.95 million, the Multiple Listing Service shows.
Twenty year ago, actress Faye Dunaway had her Beverly Hills-area home on the market at just under $2 million.
The Beverly Hills-area home of self-help guru James Arthur Ray has sold for $3.015 million.
Ten years ago this week, actor Matthew Perry closed out the year with a bang, selling his Beverly Hills-area home for $6.1 million.
Also 20 years ago, Eriq La Salle of "ER" bought a Beverly Hills-area house that had been owned in the '50s by early screen beauty Susan Hayward.
With many small lakes and luxuriant grasses, the Sand Hills area is a superb rangeland.
(The family's two-story home is in the upscale Oakland Hills area).
Soon afterward, the pipeline company, TransCanada, agreed to route the pipeline around the Sand Hills area.
