| Official Name: | Sparta, Oregon |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | Oregon#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Oregon |
| Subdivision Type2: | County |
| Subdivision Name2: | Baker |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 4111 |
| Coordinates: | 44.8711°N -117.3242°W |
| Postal Code Type: | ZIP code |
| Area Code: | 458 and 541 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1136770[1] |
Sparta is an unincorporated community in Baker County, Oregon, United States.[1] It was named for Sparta, Illinois, by William H. Packwood, a prominent Oregon pioneer who visited the gold diggings at the Powder River there in 1871.[2]
By 1873, the population was 300 and the town had a general store, a hotel, a meat market, and a brewery; food came from the nearby Eagle Valley.[3]
The town was platted in 1872, and the post office was established in 1872 and ran until 1952.[2] The post office was originally named "Gem" in 1871 and was moved about a mile east when it was renamed Sparta to match the established community.[1] The locale was also known as "Eagle City".[1]