res_partner_view.xml

<?xml version="1.0" encoding="utf-8" ?>
<!-- Copyright 2018 Tecnativa - Sergio Teruel
     License AGPL-3.0 or later (https://www.gnu.org/licenses/agpl). -->
<odoo>
    <record id="view_partner_form" model="ir.ui.view">
        <field name="model">res.partner</field>
        <field name="name">partner delivery zone</field>
        <field name="inherit_id" ref="base.view_partner_form" />
        <field name="arch" type="xml">
            <field name="industry_id" position="after">
                <field name="delivery_zone_id" />
            </field>
            <xpath
                expr="//field[@name='child_ids']/form//field[@name='mobile']"
                position="after"
            >
                <field
                    name="delivery_zone_id"
                    attrs="{'invisible': [('type','!=', 'delivery')]}"
                />
            </xpath>
        </field>
    </record>
    <record id="view_res_partner_filter" model="ir.ui.view">
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_res_partner_filter" />
        <field name="arch" type="xml">
            <field name="parent_id" position="after">
                <separator />
                <field name="delivery_zone_id" />
            </field>
            <filter name="group_country" position="after">
                <filter
                    name="delivery_zone_group"
                    string="Delivery Zone"
                    context="{'group_by': 'delivery_zone_id'}"
                />
            </filter>
        </field>
    </record>
</odoo>