h-adr

h-adr is a simple, open format for publishing structured locations such as addresses, physical and/or postal. h-adr is one of several open microformat draft standards suitable for embedding data in HTML.

h-adr is the microformats-2 update to adr. It is most commonly used as part of an h-card or h-event.

For named addresses, e.g. people or venues, use h-card.

Status

This is a Draft Specification

Participate

IRC: #microformats on Libera

Editor

Tantek Çelik (Editor)

License

Per CC0, to the extent possible under law, the editors have waived all copyright and related or neighboring rights to this work. In addition, as of 2025-11-04, the editors have made this specification available under the Open Web Foundation Agreement Version 1.0.

Example

Here is a simple postal address example:

<p class="h-adr">
  <span class="p-street-address">17 Austerstræti</span>
  <span class="p-locality">Reykjavík</span>
  <span class="p-country-name">Iceland</span>
  <span class="p-postal-code">107</span>
</p>

Parsed JSON:

{
  "items": [
    {
      "type": [
        "h-adr"
      ],
      "properties": {
        "street-address": [
          "17 Austerstræti"
        ],
        "locality": [
          "Reykjavík"
        ],
        "country-name": [
          "Iceland"
        ],
        "postal-code": [
          "107"
        ],
        "name": [
          "17 Austerstræti Reykjavík Iceland 107"
        ]
      }
    }
  ]
}

The implicit "name" property that is generated from parsing an h-adr is there for consuming applications to have a simple flattened string representation of an h-adr.

For an explicitly named address (such as a mailing address to a specific person), use h-card.

Get started

The class h-adr is a root class name that indicates the presence of an h-adr.

p-street-address, p-locality, p-country-name, p-postal-code and all the other h-adr property class names listed below define properties of the h-adr.

See microformats-2-parsing to learn more about property class names.

Properties

h-adr properties, inside an element with class h-adr:

• p-street-address - house/apartment number, floor, street name
• p-extended-address - additional street details
• p-post-office-box - post office mailbox
• p-locality - city/town/village
• p-region - state/county/province
• p-postal-code - postal code, e.g. ZIP in the US
• p-country-name - should be full name of country, country code ok
• p-label - a mailing label, plain text, perhaps with preformatting
• p-geo (or u-geo with a RFC 5870 geo: URL), optionally embedded h-geo
• p-latitude - decimal latitude
• p-longitude - decimal longitude
• p-altitude - decimal altitude - new in vCard4 (RFC6350)

All properties are optional.

• p-name - there is no "p-name" property in h-adr. If your address has an explicit name, it's likely a venue, and you should use h-card instead.

Status

h-adr is a microformats.org draft specification. Public discussion on h-adr takes place on h-adr-feedback and the #microformats irc channel on irc.freenode.net.

h-adr is ready to use and implemented in the wild, but for backwards compatibility you should also mark h-adrs up with classic adr classnames.

Property Details

(stub, add any property explanations here)

Examples in the Wild

• … add any h-adr examples you find in the wild

Validating

Main article: validators

Test and validate microformats2 markup in general with:

• https://pin13.net/mf2/ - enter your markup directly
• https://pin13.net/ - enter a URL to a page to test where it says "Microformats Parser"

Backward Compatibility

Publisher Compatibility

For backward compatibility, you may wish to use classic adr classnames in addition to the more future-proof h-adr properties, for example:

<p class="h-adr adr">
  <span class="p-street-address street-address">123 Main St.</span>, 
  <span class="p-locality locality">Pleasantville</span>
  ...
</p>

The class adr is a backward compatible root class name that indicates the presence of an adr.

street-address, locality, and all the other backward compatibility adr property class names are listed below.

Parser Compatibility

Microformats parsers should detect classic properties only if a classic root class name is found and parse them as microformats2 properties.

If an "h-adr" is found, don't look for an "adr" on the same element.

Compatibility root class name: adr

Properties: (parsed as p- plain text unless otherwise specified)

• post-office-box
• extended-address
• street-address
• locality
• region
• postal-code
• country-name

FAQ

What about country codes

Q: When marking up an address, can p-country-name be used to markup two letter country codes like "UK"? Or others like 3 letter Olympic country codes?

A: In short yes. You can do:

<span class="p-country-name">UK</span>

However it's better if you mark it up with the abbr element and provide the full name as well, e.g.

<abbr class="p-country-name" title="United Kingdom">UK</abbr>

Consuming applications may interpret any 2-3 character country-name per the table of 2-3 character country codes in ISO3166.

Background

h-adr is based on the existing adr specification, which was extracted from hCard in order to allow it to be used for applications other than contact information.

See Also

• microformats2
• h-geo can be embedded in h-adr
• h-card and h-event often contain h-adr
• vcard (most recently vCard4 RFC6350) vocabulary is re-used by h-adr.
• address-formats