JK Address Lookup field for ACF

Description

Address Lookup field for ACF adds an address lookup field type to Advanced Custom Fields. Users can search for addresses directly within the editor, and the field returns structured address data including coordinates.

The plugin uses Nominatim (OpenStreetMap) as the default lookup provider, and supports registering custom providers.

Features

• Live address search — AJAX-powered search as you type, using Select2.
• Structured data — Returns a normalized array with display name, coordinates (lat/lon), house number, road, city, state, postcode, and country.
• Country code filtering — Limit search results to specific countries.
• Language support — Set the preferred language for results.
• Extensible provider system — Register your own address lookup providers via the address_lookup_for_acf/register_providers action.
• REST API support — Field values are exposed in the REST API.

Usage

1. Install and activate the plugin.
2. Create or edit an ACF field group.
3. Add a new field and select the Address field type.
4. Optionally configure country code filtering and language.
5. Use get_field() or the_field() in your templates — the value is returned as an associative array.

Template example

$address = get_field('my_address_field');

The returned array has the following structure:

[
    'display_name'  => 'Example Street 1, City, Country',
    'coordinates'   => ['lat' => '52.370216', 'lon' => '4.895168'],
    'house_number'  => '1',
    'road'          => 'Example Street',
    'city'          => 'City',
    'state'         => 'State',
    'postcode'      => '1234 AB',
    'country'       => 'Country',
]

Custom providers

You can register a custom address lookup provider by hooking into the jk_address_lookup_for_acf/register_providers action:

add_action('jk_address_lookup_for_acf/register_providers', function ($registry) {
    $registry->register(new MyCustomProvider());
});

Your provider must extend justinkruit\AddressLookupForAcf\Providers\AbstractProvider and implement the name(), label(), and search() methods.

Filters

• jk_address_lookup_for_acf/nominatim_url — Override the Nominatim API base URL (e.g. to use a self-hosted instance).
• jk_address_lookup_for_acf/nominatim_url_vars — Modify the query parameters sent to the Nominatim API.

Both filters also support ACF’s field-specific variations by type, name, and key.

External services

This plugin connects to third-party external services to perform address lookups. No data is sent automatically; requests are only made when an admin user actively searches for an address in the ACF field editor. The search query text is sent to the configured provider’s API.

Below is a list of each provider, what additional data is sent, how to override the API URL, and links to their terms and privacy policies.

Nominatim (OpenStreetMap)

Service: Nominatim by the OpenStreetMap Foundation: used for geocoding address searches.

Additional data sent: configured country code(s) and language preference (if set in the field settings).

Override URL: use the jk_address_lookup_for_acf/nominatim_url filter to point to a self-hosted instance.

Policies:

• Nominatim Usage Policy
• OpenStreetMap Foundation Terms of Use
• OpenStreetMap Foundation Privacy Policy