[1] The Cecil Ranch in Grimes is listed on the National Register of Historic Places, partly for the architecture of its architect-designed main house, built in 1909.

[5] Grimes is located near the Sacramento River, on Highway 45 between Colusa and Knight's Landing.

There is a convenience store, a small post office, a public library, and an elementary school.

There is a boat landing on the river to the south of the town, which also serves as a restaurant for the community.

33 households (25.4%) were made up of individuals, and 12 (9.2%) had someone living alone who was 65 years of age or older.

In the California State Legislature, Grimes is in the 4th Senate District, represented by Republican Marie Alvarado-Gil,[8] and the 4th Assembly District, represented by Democrat Cecilia Aguiar-Curry.