Carbona is an unincorporated community

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...

 in San Joaquin County

San Joaquin County, California

San Joaquin County is a county located in Central Valley of the U.S. state of California, just east of the San Francisco Bay Area. As of the 2010 census, the population was 685,306. The county seat is Stockton.-History:...

, California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

, United States

United States

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

. Carbona is located on West Linne Road, 3.1 miles (5 km) south southeast of Tracy

Tracy, California

Tracy is the second most populated city in San Joaquin County, California, United States and an exurb of the San Francisco Bay Area. The population was 82,922 at the 2010 census.-History:...

. Carbona's post office

Post office

A post office is a facility forming part of a postal system for the posting, receipt, sorting, handling, transmission or delivery of mail.Post offices offer mail-related services such as post office boxes, postage and packaging supplies...

 is Tracy but has its own 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...

 95304.

History

Carbona was originally a railroad station built at the junction

Junction (rail)

A junction, in the context of rail transport, is a place at which two or more rail routes converge or diverge.This implies a physical connection between the tracks of the two routes , 'points' and signalling.one or two tracks each meet at a junction, a fairly simple layout of tracks suffices to...

 with the Alameda and San Joaquin Railroad

Alameda and San Joaquin Railroad

The Alameda and San Joaquin Railroad was incorporated on May 1, 1895 to serve the coal mines of the San Francisco & San Joaquin Coal Company at Corral Hollow. The line ran from Tesla to Carbona just south of Tracy and then up to Lathrop and Stockton. The line was constructed in 1895...

 spur line to the Tesla coal mines in Corral Hollow

Corral Hollow

Corral Hollow, formed by Corral Hollow Creek, is a canyon with part in Alameda County and parts in San Joaquin County, 6.5 miles Southwest of Tracy, California...

. The spur line was closed in 1916, by the Western Pacific Railroad

Western Pacific Railroad

The Western Pacific Railroad was a Class I railroad in the United States. It was formed in 1903 as an attempt to break the near-monopoly the Southern Pacific Railroad had on rail service into northern California...

 following a flood

Flood

A flood is an overflow of an expanse of water that submerges land. The EU Floods directive defines a flood as a temporary covering by water of land not normally covered by water...

 in 1911 when the railroad line, coal other facilities were destroyed and the towns of Carnegie

Carnegie, California

Carnegie is a former town in Corral Hollow, in San Joaquin County, California.It waa discovered that the Tesla coal mines in Corral Hollow contained a rich deposit of clay. Fueled by California's rapid population growth and the subsequent demand for building materials, the mine owners, San...

and Tesla were abandoned.