gistfile1.js

> var reg = /([a-zA-Z\s]+) ([A-Z]{2})/

> var string = "New York NY 10006 United States"

> var res = string.match(reg);

> console.log(res);

[ 'New York NY',
  'New York',
  'NY',
  index: 0,
  input: 'New York NY 10006 United States' ]

> res.length

3

> res[0]

'New York NY'

> res[1]

'New York'

> res[2]

'NY'