The following will affect theMy Account "Address"section fields and checkout fields, allowing customization of billing and shipping fields on the relevant My Account section.

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1) For My Account and the address fieldon checkout (Billing and Shipping):

In some cases you need to use this filter on the address field and it will be applied to allBilling and shipping default fields:

// Billing and Shipping fields on my account edit-addresses and checkout add_filter( 'woocommerce_default_address_fields' , 'custom_override_default_address_fields' ); function custom_override_default_address_fields( $fields ) { $fields['first_name']['label'] = 'First name'; $fields['last_name']['label'] = 'Last name'; $fields['company']['label'] = 'Company name'; $fields['address_1']['label'] = 'Street address'; $fields['address_2']['label'] = 'Apartment, unit, etc.'; $fields['city']['label'] = 'City'; $fields['country']['label'] = 'Country'; $fields['state']['label'] = 'County/State'; $fields['postcode']['label'] = 'Postcode'; return $fields; }

You can use the WooCommerce conditional tags is_account_page() and is_checkout() to target the My Account page or the Checkout page...

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2) For the Billing fields on My Account, edit address and checkout:

// Billing fields on my account edit-addresses and checkout add_filter( 'woocommerce_billing_fields' , 'custom_billing_fields' ); function custom_billing_fields( $fields ) { // Billing Fields $fields['billing_first_name']['label'] = 'First name'; $fields['billing_last_name']['label'] = 'Last name'; $fields['billing_company']['label'] = 'Company name'; $fields['billing_address_1']['label'] = 'Street address'; $fields['billing_address_2']['label'] = 'Apartment, unit, etc.'; $fields['billing_city']['label'] = 'City'; $fields['billing_country']['label'] = 'Country'; $fields['billing_state']['label'] = 'County/State'; $fields['billing_postcode']['label'] = 'Postcode'; $fields['billing_email']['label'] = 'Email'; $fields['billing_phone']['label'] = 'Phone'; return $fields; }

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3) For the Shipping field on My Account, Edit Address and Checkout

// Shipping fields on my account edit-addresses and checkout add_filter( 'woocommerce_shipping_fields' , 'custom_shipping_fields' ); function custom_shipping_fields( $fields ) { // Shipping Fields $fields['shipping_first_name']['label'] = 'First name'; $fields['shipping_last_name']['label'] = 'Last name'; $fields['shipping_company']['label'] = 'Company name'; $fields['shipping_address_1']['label'] = 'Street address'; $fields['shipping_address_2']['label'] = 'Apartment, unit, etc.'; $fields['shipping_city']['label'] = 'City'; $fields['shipping_country']['label'] = 'Country'; $fields['shipping_state']['label'] = 'County/State'; $fields['shipping_postcode']['label'] = 'Postcode'; $fields['shipping_email']['label'] = 'Email'; $fields['shipping_phone']['label'] = 'Phone'; return $fields; }

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4) All (other) fields are only used during checkout:

// All fields only on checkout add_filter( 'woocommerce_checkout_fields' , 'other_custom_checkout_fields' ); function other_custom_checkout_fields( $fields ) { // Account Fields $fields['account']['account_username']['label'] = 'Username or email'; $fields['account']['account_password']['label'] = 'Password'; // Order Fields $fields['order']['order_comments']['label'] = 'Order notes'; return $fields; }

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5) Additionally, depending on the selected country, you should need to use filters:

• woocommerce_country_locale_field_selectors
• woocommerce_get_country_locale_default

These are located in theWC_Countryclass.

The code is located in the functions.php file of the active child theme (or active theme).

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Related official documentation:Customize checkout fields using actions and filters