ZIP Code 99104 is located in Belmont Washington. 99104 is entirely within Whitman County. Regionally, 99104 is located in the Spokane Area.
| ZIP Code Name | Belmont |
| Primary County | Whitman County |
| ZIP Code Type | Standard |
| Area Code(s) | 509 |
| Current Time | PST |
| Coordinates | 47.02151108,-117.14736176 |
| Adjacent ZIP Codes | |
| Region | Spokane Area |
| Metropolitan/Micropolitan Stat Area | Pullman, WA |
| Time Zone | Pacific Standard Time |
| IANA Timezone | America/Los_Angeles |
| Area | 0.29771717 Square Miles |
| School Districts in 99104 | |
| Elementary Schools in 99104 | |
| High Schools in 99104 |