Hamilton City
census-designated place
Location in Glenn County and the state of California
Hamilton City Location in the United States
Coordinates: 39°44′34″N 122°00′49″W / 39.74278°N 122.01361°W / 39.74278; -122.01361
Country	United States
State	California
County	Glenn
Area [1]
• Total	0.312 sq mi (0.807 km2)
• Land	0.312 sq mi (0.807 km2)
• Water	0 sq mi (0 km2)  0%
Elevation	151 ft (46 m)
Population  (2010)
• Total	1,759
• Density	5,600/sq mi (2,200/km2)
Time zone	UTC-8 (Pacific (PST))
• Summer (DST)	UTC-7 (PDT)
ZIP code	95951
Area code	530
FIPS code	06-31890
GNIS feature ID	1658701
U.S. Geological Survey Geographic Names Information System: Hamilton City, California

Hamilton City (formerly, Hamilton)^[2] is a census-designated place (CDP) in Glenn County, California, United States. The population was 1,759 at the 2010 census, down from 1,903 at the 2000 census. Hamilton City is located 9.5 miles (15 km) east of Orland,^[2] and 10 miles west of Chico at an elevation of 151 feet (46 m).^[3] The community is inside area code 530. The default prefix used for wired telephones in the Hamilton City area is 826. The postal ZIP Code is 95951.

The community is located along the Sacramento River near Mile 199. Hamilton Union High School is well known locally because of its sports and agricultural programs as well as being recognized as a California Distinguished School.^[4]

The large silos of the former Holly Sugar Plant (formerly served by California Northern Railroad) are visible from all over town.

"Las Palmas" (Palm Drive; a.k.a. County Road 16) is well known to locals and is 2.1 miles (3.4 km) long. It connected Hamilton City to the now-defunct Mills Orchards, which were originally the home of James Mills, Sr. and his family.

According to the United States Census Bureau, the CDP has a total area of 0.3 square miles (0.78 km²), all of it land.

According to the Köppen Climate Classification system, Hamilton City has a warm-summer Mediterranean climate, abbreviated "Csa" on climate maps.^[5]

The town began in 1905 with the founding of a large sugar beet processing plant, completed the following year by James Hamilton and the Alta California Sugar Beet Company (which changed its name in 1908 to Sacramento Valley Sugar Company). The plant later belonged to Holly Sugar Corporation and is known to this day as the Holly Sugar Plant. Holly Sugar was sold in 1936 to Spreckels Sugar Company and, in turn, Spreckels was later purchased by Imperial Sugar.^[6] The sugar plant closed in 2006, and in 2021 was acquired and renovated by Nutrien Company, a fertilizer producer.^[7]

The first post office at Hamilton City opened in 1906.^[2] As the town's population grew, to make room for development the local cemetery was moved to a new location about 10 miles north of Artois, California.

At the 2010 census Hamilton City had a population of 1,759. The population density was 5,642.8 inhabitants per square mile (2,178.7/km²). The racial makeup of Hamilton City was 834 (47.4%) White, 18 (1.0%) African American, 23 (1.3%) Native American, 15 (0.9%) Asian, 0 (0.0%) Pacific Islander, 804 (45.7%) from other races, and 65 (3.7%) from two or more races. Hispanic or Latino of any race were 1,489 persons (84.7%).^[9]

The whole population lived in households, no one lived in non-institutionalized group quarters and no one was institutionalized.

There were 510 households, 269 (52.7%) had children under the age of 18 living in them, 304 (59.6%) were opposite-sex married couples living together, 79 (15.5%) had a female householder with no husband present, 48 (9.4%) had a male householder with no wife present. There were 40 (7.8%) unmarried opposite-sex partnerships, and 5 (1.0%) same-sex married couples or partnerships. 54 households (10.6%) were one person and 24 (4.7%) had someone living alone who was 65 or older. The average household size was 3.45. There were 431 families (84.5% of households); the average family size was 3.66.

The age distribution was 530 people (30.1%) under the age of 18, 203 people (11.5%) aged 18 to 24, 493 people (28.0%) aged 25 to 44, 359 people (20.4%) aged 45 to 64, and 174 people (9.9%) who were 65 or older. The median age was 29.6 years. For every 100 females, there were 103.8 males. For every 100 females age 18 and over, there were 106.6 males.

There were 539 housing units at an average density of 1,729.1 per square mile (667.6/km²),of which 510 were occupied, 289 (56.7%) by the owners and 221 (43.3%) by renters. The homeowner vacancy rate was 2.0%; the rental vacancy rate was 5.1%. 947 people (53.8% of the population) lived in owner-occupied housing units and 812 people (46.2%) lived in rental housing units.

At the 2000 census there were 1,903 people, 513 households, and 431 families in the CDP. The population density was 6,043.9 inhabitants per square mile (2,333.6/km²). There were 543 housing units at an average density of 1,724.6 per square mile (665.9/km²). The racial makeup of the CDP was 38.10% White, 0.37% Black or African American, 1.21% Native American, 0.32% Asian, 56.38% from other races, and 3.63% from two or more races. 80.56% of the population were Hispanic or Latino of any race.^[10] Of the 513 households 52.0% had children under the age of 18 living with them, 64.9% were married couples living together, 11.7% had a female householder with no husband present, and 15.8% were non-families. 10.5% of households were one person and 4.7% were one person aged 65 or older. The average household size was 3.71 and the average family size was 4.00.

The age distribution was 33.4% under the age of 18, 12.6% from 18 to 24, 28.3% from 25 to 44, 18.5% from 45 to 64, and 7.2% 65 or older. The median age was 28 years. For every 100 females, there were 106.0 males. For every 100 females age 18 and over, there were 113.1 males.

The median household income was $33,169 and the median family income was $34,167. Males had a median income of $20,405 versus $14,191 for females. The per capita income for the CDP was $9,047. About 17.5% of families and 20.6% of the population were below the poverty line, including 29.0% of those under age 18 and 9.2% of those age 65 or over.

In the state legislature Hamilton City is in the 4th Senate District, represented by Republican Marie Alvarado-Gil,^[11] and in the 3rd Assembly District, represented by Republican James Gallagher.^[12]

Federally, Hamilton City is in California's 3rd congressional district, represented by Republican Kevin Kiley.^[13]

The Hamilton Union High School District and Hamilton Union Elementary School Districts unified in 2009 to become the Hamilton Unified School District. Longtime Hamilton Union High School Principal/Superintendent Ray Odom served as the first Superintendent of the new Hamilton Unified School District. Mr. Odom retired in 2011. The current Superintendent is Jeremy Powell and the current High School Principal is Cris Oseguera. Hamilton Unified School District includes Hamilton High School, Hamilton Elementary School, Ella Barkley High School, Hamilton Adult School, Hamilton High Community Day School, and Hamilton Elementary Community Day School.

Law enforcement is provided by the Glenn County Sheriff's Department.

Fire services are provided by the Hamilton City Fire Protection District which covers the town as well as the surrounding area, including a mutual aid agreement with Butte County Fire, the Capay Volunteer Fire Department and Ord Bend Volunteer Fire Department, eight miles south.

The Fire District consists of a full-time fire chief, a part-time division chief, and volunteer firefighters. Dispatch services for HCFPD are provided by the Tehama-Glenn Unit Headquarters of the California Department of Forestry and Fire Protection in Red Bluff.

• Kyle Lohse - Major League Baseball (MLB) pitcher for the Milwaukee Brewers; attended Hamilton Union High School.^[14]
• Rigoberto Sanchez - National Football League (NFL) punter for the Indianapolis Colts; attended Hamilton Union High School.^[15]