ZIP Code 71840 is located in Genoa Arkansas. 71840 is entirely within Miller County. Regionally, it is located in the Shreveport Area.
| ZIP Code Name | Genoa |
| Primary County | Miller County |
| ZIP Code Type | PO Box |
| Current Time | CDT |
| Coordinates | 33.38345337,-93.91529083 |
| Adjacent ZIP Codes | |
| Region | Shreveport Area |
| Metropolitan/Micropolitan Stat Area | Texarkana, TX-AR |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |