[2] Trinity Center is located 29 miles (47 km) north of Weaverville.

It is home to a store, Trinity Center Airport, a marina, a community church, several campgrounds, and several small resorts.

The original town of Trinity Center was established in 1851 as a stage stop for travelers headed further north and now lies beneath the lake, which came into existence after the construction of the Trinity River Dam in 1961.

A handful of buildings were moved to the town's present day location, including the I.O.O.F.

According to the United States Census Bureau, the CDP covers an area of 5.2 square miles (13.5 km2), all of it land.

There were 327 housing units at an average density of 62.5 per square mile (24.1/km2), of which 110 (80.3%) were owner-occupied, and 27 (19.7%) were occupied by renters.

[23] Federally, Trinity Center is in California's 2nd congressional district, represented by Democrat Jared Huffman.