New Zealand is nowhere near as big as the US or Canada, so you wouldn't really want to get too specific with the query. We don't have States or Provinces, so City would be sufficient. Using the example from the link mentioned above:
web designer|US|full-time|los angeles, CA
For New Zealand I'd look at:
web designer|NZ|full-time|auckland
For Canada
web designer|CA|full-time|toronto, ON