Get the place_id of a specific component of an address

This might be what you are trying to accomplish: this returns the full autocomplete search result, place id, Lat, Lng, and formatted address, but you can modify it to return any address components (or remove any unnecessary ones) in form inputs

.

var placeSearch;
var componentForm = {
    street_number: 'long_name',
    place_id: 'long_name'
};

var mapOptions = {
    center: new google.maps.LatLng(41.877461, -87.638085),
    zoom: 13,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    scrollwheel: false,
    disableDefaultUI: true,
    streetViewControl: false,
    panControl: false
};

var map = new google.maps.Map(document.getElementById('map_canvas'),
mapOptions);

var input = /** @type {HTMLInputElement} */
(
document.getElementById('field_autocomplete'));

var autocomplete = new google.maps.places.Autocomplete(input);
autocomplete.bindTo('bounds', map);

var infowindow = new google.maps.InfoWindow();

var marker = new google.maps.Marker({
    map: map,
    anchorPoint: new google.maps.Point(0, -29)
});

google.maps.event.addListener(autocomplete, 'place_changed', function () {
    infowindow.close();
    marker.setVisible(false);

    var place = autocomplete.getPlace();

    if (!place.geometry) {
        window.alert("Autocomplete returned place contains no geometry");
        return;
    }

    // If the place has a geometry, then present it on a map.
    if (place.geometry.viewport) {
        map.fitBounds(place.geometry.viewport);
    } else {
        map.setCenter(place.geometry.location);
        map.setZoom(12); // Why 17? Because it looks good.
    }
    marker.setIcon( /** @type {google.maps.Icon} */ ({
        url: place.icon,
        size: new google.maps.Size(71, 71),
        origin: new google.maps.Point(0, 0),
        anchor: new google.maps.Point(25, 34),
        scaledSize: new google.maps.Size(50, 50)
    }));
    marker.setPosition(place.geometry.location);
    marker.setVisible(true);

    var address = '';
    if (place.address_components) {
        address = [
        (place.address_components[0] && place.address_components[0].short_name || ''), (place.address_components[1] && place.address_components[1].short_name || ''), (place.address_components[2] && place.address_components[2].short_name || '')].join(' ');
    }

    infowindow.setContent('<div id="infowindow"><strong>' + place.name + '</strong><br>' + 'Place ID: ' + place.place_id + '<br>' +
    place.formatted_address);
    infowindow.open(map, marker);
});

google.maps.event.addListener(autocomplete, 'place_changed', function () {
    fillInAddress();
});

function fillInAddress() {
    // Get the place details from the autocomplete object.
    var place = autocomplete.getPlace();

    document.getElementById('place_id').value = place.place_id;
    document.getElementById('latitude').value = place.geometry.location.lat();
    document.getElementById('longitude').value = place.geometry.location.lng();

    var formatted_address = place.formatted_address;
    document.getElementById("formatted_address").value = formatted_address;

    for (var component in componentForm) {
        document.getElementById(component).value = '';
        document.getElementById(component).disabled = false;
    }

    // Get each component of the address from the place details
    // and fill the corresponding field on the form.
    for (var i = 0; i < place.address_components.length; i++) {
        var addressType = place.address_components[i].types[0];
        if (componentForm[addressType]) {
            var val = place.address_components[i][componentForm[addressType]];
            document.getElementById(addressType).value = val;
        }
    }
}

// Bias the autocomplete object to the user geographical location,
// as supplied by the browser 'navigator.geolocation' object.
function geolocate() {
    if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(function (position) {
            var geolocation = new google.maps.LatLng(
            position.coords.latitude, position.coords.longitude);

            var latitude = position.coords.latitude;
            var longitude = position.coords.longitude;

            document.getElementById('latitude').value = latitude;
            document.getElementById('longitude').value = longitude;

            autocomplete.setBounds(new google.maps.LatLngBounds(geolocation, geolocation));
        });
    }
}