Merrimac is an unincorporated community

Unincorporated area

In law, an unincorporated area is a region of land that is not a part of any municipality.To "incorporate" in this context means to form a municipal corporation, a city, town, or village with its own government. An unincorporated community is usually not subject to or taxed by a municipal government...

 in Butte County, California

Butte County, California

Butte County is a county located in the Central Valley of the US state of California, north of the state capital of Sacramento. As of the 2010 census, it had a population of 220,000. The county seat is Oroville. Butte County is the "Land of Natural Wealth and Beauty."Butte County is watered by the...

 located along Oroville-Quincy Road about 2.1 miles (3.4 km) south of the Plumas County

Plumas County, California

Plumas County is a county located in the Sierra Nevada of the U.S. state of California. The county gets its name from the Spanish words for the Feather River , which flows through the county. As of the 2010 census, the population 20,007, down from 20,824 at the 2000 census...

 line. It lies at an elevation of 3999 feet (1219 m). While the location is shown as official in the National Geographic Names Database, it is not known if locals use this name to describe the place today. Nearby is Rogers Cow Camp, a campground in Lassen National Forest

Lassen National Forest

Lassen National Forest is a national forest of 1,700 square miles in northeastern California. It is named after pioneer Peter Lassen, who mined, ranched and promoted the area to emigrant parties in the 1850s.- Overview :...

. The USGS feature ID for this populated place is 1659117. The US Postal Service does not show a ZIP Code for this community. The location is within area code 530

Area code 530

North American area code 530 is a California telephone area code that covers Auburn, Chico, Colfax, Davis, Grass Valley, Marysville, Oroville, Placerville, Redding, Red Bluff, Susanville, Truckee, Woodland, Yuba City and South Lake Tahoe....

.

The community is located along Oroville-Quincy Road between the towns of Buckeye and Junction House. As the name implies, the road continues to intersect with State Route 70

California State Route 70

State Route 70 is a state highway in the U.S. state of California. Connecting Sacramento with U.S. Route 395 near Beckwourth Pass via the Feather River Canyon, it was formerly known as U.S. Route 40 Alternate, crossing the Sierra Nevada at a lower elevation than Donner Pass on U.S. Route 40...

 in Quincy

Quincy, California

Quincy is a census-designated place and the county seat of Plumas County, California. The population was 1,728 at the 2010 census, down from 1,879 at the 2000 census. Quincy is named after the city of Quincy, Illinois...

. This road is also called Forest Service Road 119. It is shown on some modern road maps covering the entire state. Merrimac does not appear on the 1958 State of California highway map.

The Pea Vine post office operated from 1856 to 1864. The Merrimac post office operated from 1883 to 1902 and 1915 to 1934.