| Callao | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Virginia#USA |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location within the Commonwealth of Virginia |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Virginia |
| Subdivision Type2: | County |
| Subdivision Name2: | Northumberland |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 37.9692°N -76.5597°W |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1464259[1] |
Callao is an unincorporated community in Northumberland County, Virginia, United States.[1] It is located on U.S. Route 360 (the Northumberland Highway) northwest of Heathsville and east of Warsaw.
The name of the town was derived from the name of the first Postmaster, Jacob Callaway, in 1893. Callaway wanted the post office named after himself. However, there was already a town named Callaway in Virginia, so he dropped the "way" and added the "o".[2]
Wheatland was listed on the National Register of Historic Places in 1988.