Correct

郊县

/ jiāo xiàn / 
Strokes

Example

As a Noun

suburban county

1
Gāishì
该市
xiàxiá
下辖
jiǔ
九
gè
个
ōu
区
  
、
sì
四
gè
个
jiāoxiàn
郊县
  
。

There are nine districts and four outlying counties under the jurisdiction of this city.