Abbreviate Avenue, Boulevard, and Street only with a numbered address. Spell them out and capitalize when part of a formal street name without a number.
When abbreviating post office in an address, do not use periods.
Campus addresses should begin with the name of the office or department, followed by University of Colorado Boulder, followed by the campus box number, followed by Boulder, CO. Use the nine-digit zip code, which includes the campus box number.
Office of the Registrar
University of Colorado Boulder
20 UCB
Boulder, CO 80309-0020
In addresses, do not include the building name and room number unless it is likely that people will drop by to hand deliver or pick up printed materials.
All campus addresses must begin with the campus box number immediately followed by a three- letter code for the campus or university affiliate.
| UCB | Boulder campus | FTZ | Anschutz Medical Campus |
| UCD | Denver Campus | SYS | System administration |
| UCS | Colorado Springs campus | UCA | University administration (offices on Grant Street in Denver) |
| HSC | Health Sciences Center (9th Street and Colorado Boulevard) |