Tomales Presbyterian Church and Cemetery

Tomales is a census-designated place (CDP) on State Route 1 in Marin County, California, United States. The population was 187 at the 2020 census.

Tomales High School is located in the town of Tomales, California, United States. It is the comprehensive high school of the Shoreline Unified School District. It serves the western Marin and Sonoma County communities, stretching from the towns of Point Reyes Station and Inverness along Tomales Bay, running north past the fishing port of Bodega Bay to the mouth of the Russian River, a distance of nearly 50 miles (80 km), and widening 13 miles (21 km) east from the west coast. Tomales High School draws its students from approximately 450 square miles (1,200 km2). Tomales High School was recognized as a California Distinguished School in 2011.

Rancho Bolsa de Tomales was a Mexican land grant in present day Marin County and Sonoma County, California given in 1846 by Governor Pío Pico to Juan Nepomuceno Padilla. The name means "the Pool of the Tomales Indians," which referred to Burbank’s Lake. The grant extended along the Pacific coast from Estero de San Antonio south to Walker Creek, and encompassed present day Tomales. Stemple Creek transversed the property. The land claim was rejected as fraudulent by the US Supreme Court.

Stemple Creek is a 16 mi (26 km) long, westward-flowing stream in the California counties of Sonoma and Marin, which feeds into the Estero de San Antonio. Its waters ultimately reach Bodega Bay, part of the Gulf of the Farallones National Marine Sanctuary on the Pacific Ocean.

Fallon, California is an unincorporated community in Marin County, California Just west of State Route 1 along the abandoned North Pacific Coast Railroad.

Hamlet (also Telmat) is an unincorporated community in Marin County, California. It is located on the northeast shore of Tomales Bay and the Northwestern Pacific Railroad 3 miles (4.8 km) south-southwest of Tomales, at an elevation of 23 feet (7 m).A post office operated at Hamlet from 1876 to 1886. The Telmat post office operated from 1917 to 1931.

Walker Creek is a northwest-flowing stream in western Marin County, California, United States. It originates at the confluence of Salmon Creek and Arroyo Sausal and empties into Tomales Bay south of Dillon Beach, California.

Nick's Cove is the site of a long-standing restaurant and vacation camp in Marin County, California. It is on the northeast shore of Tomales Bay 3.25 miles (5.2 km) south-southwest of Tomales, at an elevation of 7 feet (2 m). Hog Island is in the middle of Tomales Bay, to the west of Nick's Cove, and Point Reyes National Seashore constitutes the western landmass on the opposite side of the bay. The name honors Nick Kojich, who in 1931 opened a seafood restaurant at this location, which is still in operation.

Hog Island is an island roughly 2 acres (0.8 ha) in size located approximately 5 mi (8 km) south of the entrance to Tomales Bay in the West Marin area of Marin County, California. While waters to its west are deep enough for small ships to enter Tomales Bay, at low tide the shallows to the east may be wadeable to the eastern shore of the bay. Unsuspecting vessels have run aground in that region a number of times. However, as it is some distance from the mouth of Tomales Bay, Hog Island does not experience the large sudden waves that characterize the Tomales Bay Bar entrance region.The name Hog Island reportedly came from a wild 1870s incident, in which a barge carrying a load of pigs caught fire and was grounded on the island to avoid sinking—at which point the pigs escaped onto the island until they were rounded up again. The island lends its name to the Hog Island Oyster Company, which produces shellfish on Tomales Bay, several miles south of Hog Island. The San Andreas fault runs through the center of Tomales Bay, past Hog Island. Local legend claims that Hog Island and nearby Duck Island (also known as "Piglet") were once connected, but separated as a result of the 1906 San Francisco earthquake. While land deeds from the 1880s indicate that the two islands were separate before the earthquake, the two islands are (and have been) intermittently linked by a sand spit exposed at low tide. The Inverness Yacht Club hosts an annual sailboat race around the island. Competing boats sail from the club, around the island, and back to the club again.

Chileno Creek is a stream in western Marin County, California, United States. It originates west of Petaluma, California at 220-acre Laguna Lake which straddles Marin and Sonoma Counties, from which it flows west 6.25 kilometres (3.88 mi) before joining Walker Creek, a tributary of Tomales Bay.