gettext change 'state' to 'Province'

change_state_to_province.php

<?php
//copy lines 5 onwards into your 'PMPro Customizations' plugin - http://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/

  function pmproc_change_my_text( $translated_text, $text, $domain ) {
        
        switch ( $translated_text ) {
            case 'State' :
                $translated_text = __( 'Region', 'paid-memberships-pro' );
                break;
        }
        
    return $translated_text;
    
}

add_filter( 'gettext', 'pmproc_change_my_text', 20, 3 );