Under Mexican rule, in July 1840, Lazaro Piña was deeded 50,000 acres as Rancho Agua Caliente.

Sometime in 1849 Thaddeus M. Leavenworth acquired 320 acres of the Rancho in what became present-day Agua Caliente, Fetters Hot Springs, Boyes Hot Springs, and part of Maxwell Farm.

"[4] Henry Ernest Boyes discovered hot springs in 1895 in the central part of the area.

[4][6] and started the Boyes Hot Springs Hotel, now the site of the Fairmont Sonoma Mission Inn & Spa.

[8][9] During the Great Depression, the area's tourism business stopped and the hotel closed.

[4] Tourism became the region's main economic focus again later in the 1930s, then during World War II it was taken over by the United States Navy, who sent sailors to the area for recreation.

[7] According to the United States Census Bureau, the CDP has a total area of 1.1 square miles (2.8 km2), all land.

Today, the springs are accessible through the Fairmont Hotel and Spa located in the area.

[10] Sonoma County Transit runs bus services through the Boyes Springs area.

[12] The 2010 United States Census[29] reported that Boyes Hot Springs had a population of 6,656.

There were 2,508 housing units at an average density of 2,368.7 per square mile (914.6/km2), of which 53.7% were owner-occupied and 46.3% were occupied by renters.

Historically, tourism has been a major economic factor for the area, focusing around the attraction of the naturally occurring hot springs.

[4] Boyes Hot Springs is also known for having one of the first Michelin Guide star rated restaurants in the area, Santé, which is located in the Fairmont.

[32] In the California State Legislature, Boyes Hot Springs is in the 2nd Senate District, represented by Democrat Mike McGuire, and in the 4th Assembly District, represented by Democrat Cecilia Aguiar-Curry.