Nederlandse reverse geocoding API — coördinaten naar adres via PDOK Locatieserver. WGS84 lat/lon omzetten naar straatnaam, postcode en plaatsnaam.

GET /v1/geo/reverse-geocode

Converts WGS84 latitude/longitude coordinates into the nearest Dutch address, using the PDOK Locatieserver (CC-0 open data, Kadaster).

Only Dutch territory is supported (lat 50.5–53.7 °N, lon 3.2–7.3 °E).

Request parameters

Parameter	Type	Required	Description
`lat`	number	✓	Latitude in decimal degrees (WGS84), e.g. `52.3756`
`lon`	number	✓	Longitude in decimal degrees (WGS84), e.g. `4.8951`

Example request

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.omnizoek.nl/v1/geo/reverse-geocode?lat=52.3756&lon=4.8951"

Example response

{
  "lat": 52.3756,
  "lon": 4.8951,
  "display_name": "Damrak 1, Amsterdam",
  "type": "adres",
  "postcode": "1012LG",
  "city": "Amsterdam",
  "municipality": "Amsterdam",
  "province": "Noord-Holland",
  "street": "Damrak",
  "house_number": "1",
  "bag_id": "0363200000397642"
}

Response fields

Field	Type	Description
`lat`	number	Input latitude (WGS84)
`lon`	number	Input longitude (WGS84)
`display_name`	string	Full formatted address of the nearest location
`type`	string	PDOK result type, e.g. `adres`
`postcode`	string \| null	Postcode, e.g. `1012LG`
`city`	string \| null	City / woonplaats
`municipality`	string \| null	Municipality / gemeente
`province`	string \| null	Province / provincie
`street`	string \| null	Street name
`house_number`	string \| null	House number
`bag_id`	string \| null	BAG object ID

Error responses

Status	Cause
`404`	No address found near the given coordinates
`422`	Coordinates outside Dutch territory
`503`	PDOK Locatieserver unavailable

Caching

Results are cached for 24 hours per unique coordinate pair (5 decimal places).

Omgekeerde Geocoding (PDOK)