Key:addr2:*

Prefix addr2:*
Description
Namespace prefix for indicating another street address for a feature.
Group: addresses
Used on these elements
may be used on nodesmay be used on waysmay be used on areas (and multipolygon relations)should not be used on relations (except multipolygon relations)
Useful combination
See also
Status: in use
taginfo: addr2:*

information sign

This page describes a key prefix rather than a simple key.

information sign

This key page is a stub. You can help OpenStreetMap by expanding it.
Similar pages for structural reference: Key:religion, Key:waterway.

This namespace prefix complements the primary addr:*=* keys, and appears to being used to indicate additional official address information of a feature.

Several but separate Wiki pages outlining a draft to formalize this namespace tag were found:

Usage

As of March 2025, the 20,300+ uses of addr2:street=*, 91% of them are combined with addr2:housenumber=*. There are some usages of the similar namespaces: addr3, addr4, and addr1.

addr2:street
 addr3:street
 addr4:street
 addr1:street
addr2:housenumber
 addr3:housenumber
 addr4:housenumber
 addr1:housenumber
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