title: How to check if address in within region on Google Maps API
body: <p>I have an address string E.g. "12 Swiss Ave, Gonville, Wanganui, New Zealand"</p>
  
  <p>Given this address I need to work out if the address is within the North or South island of New Zealand.</p>
  
  <p>If I pass the address to the google maps api the data I get back is below, unfortunately though it doesn't tell me what island it is in. So, how can I check this?</p>
  
  <pre><code>{
      "results": [
          {
              "address_components": [
                  {
                      "long_name": "12",
                      "short_name": "12",
                      "types": [
                          "street_number"
                      ]
                  },
                  {
                      "long_name": "Swiss Avenue",
                      "short_name": "Swiss Ave",
                      "types": [
                          "route"
                      ]
                  },
                  {
                      "long_name": "Gonville",
                      "short_name": "Gonville",
                      "types": [
                          "sublocality",
                          "political"
                      ]
                  },
                  {
                      "long_name": "Wanganui",
                      "short_name": "Wanganui",
                      "types": [
                          "locality",
                          "political"
                      ]
                  },
                  {
                      "long_name": "Manawatu-Wanganui",
                      "short_name": "Manawatu-Wanganui",
                      "types": [
                          "administrative_area_level_1",
                          "political"
                      ]
                  },
                  {
                      "long_name": "New Zealand",
                      "short_name": "NZ",
                      "types": [
                          "country",
                          "political"
                      ]
                  },
                  {
                      "long_name": "4501",
                      "short_name": "4501",
                      "types": [
                          "postal_code"
                      ]
                  }
              ],
              "formatted_address": "12 Swiss Avenue, Gonville, Wanganui 4501, New Zealand",
              "geometry": {
                  "location": {
                      "lat": -39.9444245,
                      "lng": 175.0239575
                  },
                  "location_type": "ROOFTOP",
                  "viewport": {
                      "northeast": {
                          "lat": -39.9430755197085,
                          "lng": 175.0253064802915
                      },
                      "southwest": {
                          "lat": -39.9457734802915,
                          "lng": 175.0226085197085
                      }
                  }
              },
              "types": [
                  "street_address"
              ]
          }
      ],
      "status": "OK"
  }
  </code></pre>