I'm using ol.control.SearchNominatim for address search.

However, I would like to limit the search to only one country, state and city.

For example: country = Brazil, state = Sao Paulo, city ​​= Sao Paulo

Is it possible?

var searchNominatim = new ol.control.SearchNominatim (
    reverse: false,
    polygon: false,
    //url: https://nominatim.openstreetmap.org/ui/search.html?city=S%C3%A3o+Paulo&county=Brasil&state=Regi%C3%A3o+Imediata+de+S%C3%A3o+Paulo,
    position: true, // Search, with priority to geo position
    placeholder: "Search",
    target: $("#search > div").get(0)
  • You would need to specify the viewbox for the city nominatim.org/release-docs/develop/api/Search/… viglino.github.io/ol-ext/doc/doc-pages/… Since that is a rectangle it would not guarantee the result would be inside the city boundary, which is unlikely to be rectangular.
    – Mike
    Aug 28, 2022 at 16:18
  • Thanks for the help, but it didn't work. I tried to write the filters in the url but it didn't work either. url: https://nominatim.openstreetmap.org/ui/search.html?city=S%C3%A3o+Paulo&county=Brasil&state=Regi%C3%A3o+Imediata+de+S%C3%A3o+Paulo
    – user210138
    Aug 29, 2022 at 22:37
  • 1
    You also need to set bounded when you use viewbox. If you first find the city with nominatim you can use the geometry to set the viewbox codesandbox.io/s/simple-forked-tuzse7?file=/main.js
    – Mike
    Aug 30, 2022 at 12:16
  • Mike, thank you. Sorry to write as an answer and not as a comment. But it's been a while and I can't log into the account I asked the question anymore.. Thank you and sorry for the delay in getting back to you. I've tested your code, but it's still not working exactly as I need it. For example, I typed Rua Oratório, and it showed in the select box several streets with the same name and some are not in the city of São Paulo. I would like to filter so that they only show the streets of a certain city. Sep 21, 2022 at 12:04
  • Nominatin with a q= as used by ol-ext query can only filter by a viewbox extent. You would need to override the ol-ext response handler to filter out results inside that extent which do not intersect the city geometry codesandbox.io/s/simple-forked-swyn8w?file=/main.js
    – Mike
    Sep 25, 2022 at 14:50

1 Answer 1


use country code and city code:

var requestData = searchNominatim.requestData.bind(searchNominatim);
    searchNominatim.requestData = function(e){
        var data = requestData(e);
        data.countrycodes = 'countrycode,citycode,...';
        return data;

you can find your country/city code on google

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