Collinsville is an unincorporated

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...

 rural community in Solano County, California

Solano County, California

Solano County is a county located in Bay-Delta region of the U.S. state of California, about halfway between San Francisco and Sacramento and is one of the nine San Francisco Bay Area counties. The county's population was reported by the U.S. Census to be 413,344 in 2010...

, USA

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. It is located next to the Sacramento River Delta

Sacramento River Delta

The Sacramento-San Joaquin River Delta, or California Delta, is an expansive inland river delta and estuary in northern California in the United States. The Delta is formed at the western edge of the Central Valley by the confluence of the Sacramento and San Joaquin rivers and lies just east of...

 on the north side of the Sacramento River

Sacramento River

The Sacramento River is an important watercourse of Northern and Central California in the United States. The largest river in California, it rises on the eastern slopes of the Klamath Mountains, and after a journey south of over , empties into Suisun Bay, an arm of the San Francisco Bay, and...

, and is effectively separated from the more intense urban development in Contra Costa County immediately across the river. The area was once proposed for a major chemical plant of the Dow Chemical Company

Dow Chemical Company

The Dow Chemical Company is a multinational corporation headquartered in Midland, Michigan, United States. As of 2007, it is the second largest chemical manufacturer in the world by revenue and as of February 2009, the third-largest chemical company in the world by market capitalization .Dow...

 in the 1980s. The community is in ZIP code

ZIP Code

ZIP codes are a system of postal codes used by the United States Postal Service since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the...

 94585 and area code 707

Area code 707

North American area code 707 is a Californian telephone area code which covers Napa, Sebastopol, Vallejo, Benicia, Fairfield, Santa Rosa, Petaluma, Fort Bragg, Crescent City, Eureka, Clearlake, Vacaville, Ukiah, and northwestern California. It was split from area code 415 on March 1, 1959...

.

Politics

In the state legislature

California State Legislature

The California State Legislature is the state legislature of the U.S. state of California. It is a bicameral body consisting of the lower house, the California State Assembly, with 80 members, and the upper house, the California State Senate, with 40 members...

 Collinsville is located in the 2nd Senate

California State Senate

The California State Senate is the upper house of the California State Legislature. There are 40 state senators. The state legislature meets in the California State Capitol in Sacramento. The Lieutenant Governor is the ex officio President of the Senate and may break a tied vote...

 District, represented by Democrat

Democratic Party (United States)

The Democratic Party is one of two major contemporary political parties in the United States, along with the Republican Party. The party's socially liberal and progressive platform is largely considered center-left in the U.S. political spectrum. The party has the lengthiest record of continuous...

 Noreen Evans

Noreen Evans

Noreen Evans is an American politician in the California State Senate. She is a Democrat representing the 2nd district, encompassing Humboldt, Mendocino, Lake, and Napa counties, as well as parts of Sonoma and Solano counties....

, and in the 8th Assembly

California State Assembly

The California State Assembly is the lower house of the California State Legislature. There are 80 members in the Assembly, representing an approximately equal number of constituents, with each district having a population of at least 420,000...

 District, represented by Democrat Mariko Yamada

Mariko Yamada

Mariko Yamada is a Democratic assemblywoman from California's 8th Assembly district. Assemblywoman Yamada was elected in 2008 after defeating West Sacramento mayor Christopher Cabaldon in a competitive Democratic primary, a defeat that many considered an upset win for Yamada...

. Federally, Collinsville is located in California's 10th congressional district

California's 10th congressional district

California's 10th congressional district is a congressional district located in the U.S. state of California in the East San Francisco Bay Area region of Northern California....

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