Today, we've added the USPS Residential Delivery Indicator (RDI) as an additional data point in our ZIP+4 append.

The RDI indicates whether an address is residential or commercial. Adding the RDI to your parcels can make sure your parcels are charged accurate shipping rates, as some carriers charge higher rates for residential versus commercial deliveries.

RDI is automatically included when you append ZIP+4 data to your records. RDI can be appended for both address lookups and latitude-longitude lookups.

If you choose to use our Spreadsheet Uploader, Geocodio will append an additional column in your results called: Residential Indicator. Here, we will define whether your records are Commercial or Residential. When this information is not available, the field will be left blank.

If you choose to access this data via our API and the zip4 field code, you'll receive data point called residential that returns a boolean. When true, the address would be considered residential. When false, the address would be considered commercial.

"zip4": {
  "record_type": {
  "code": "S",
  "description": "Street"
  },
  "residential": false,
  "carrier_route": {
  "id": "C001",
  "description": "City Delivery"
  },
  "building_or_firm_name": null,
  "plus4": [
    "3001"
  ],
  "zip9": [
    "10001-3001"
  ],
  "government_building": null,
  "facility_code": {
    "code": "P",
    "description": "Post Office"
  },
  "city_delivery": true,
  "valid_delivery_area": true,
  "exact_match": true
}

For more information, check out our ZIP+4 guide.