Locatable Address Conversion System (LACS) is a service offered by the
United States Postal Service
The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the U ...
to update mailing addresses when a street is renamed or the address is updated for
911
911 or 9/11 may refer to:
Dates
* AD 911
* 911 BC
* September 11
** 9/11, the September 11 attacks of 2001
** 11 de Septiembre, Chilean coup d'état in 1973 that outed the democratically elected Salvador Allende
* November 9
Numbers
* 91 ...
. In the case of 911, the address is changed from a rural route format to an urban/city route format. E.G. RR 2 BOX 8, SOME CITY, TX would become 2601 BELMONT DR, SOME CITY, TX.
A check of address using LACS is typically not performed by the USPS, but by 3rd parties who license the LACS data from the USPS. A licensee will create or purchase software to perform the LACS check and receive monthly or bi-monthly updates of LACS data from the USPS.
United States Postal Service
Postal addresses in the United States
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