Rocklin is a city in Placer County, California located in the metropolitan area of Sacramento. It shares borders with Roseville, Loomis, and Lincoln. As of the 2010 census, the city's population was 56,974.
Rocklin is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area located in the Sacramento Valley.
Although European-Americans were probably fishing and harvesting game in the Rocklin area in the late 18th and early 19th centuries, major European-American settlement started in the early 1850s as fortune hunters sluiced for gold in Secret Ravine, an area of oaks and dredger tailings that can be found today southeast of Interstate 80 between Roseville and Loomis.
The Rocklin post office opened in 1868. The town incorporated in 1893.
It has been submitted by Stanley Rocklin of Arizona that the town was named for a Finnish immigrant whose surname was Rocklin. This per Stanley's grandfather who told Stanley, in about 1950, when Stanley was a child, that he (the grandfather) had a Finnish ancestral distant relative, descended of the branch of the Rocklins of Russia who had earlier emigrated to Finland. This individual who had emigrated to the United States, owned a store in California during the Gold Rush (and perhaps afterwards). The California Gold Rush ended in 1851.
Rocklin is located at .
According to the United States Census Bureau, the city has a total area of 19.6 square miles (51 km2), of which 0.05 square miles (0.13 km2), or 0.27%, is water.
The 2010 United States Census reported that Rocklin had a population of 56,974. The population density was 2,907.7 people per square mile (1,122.7/km²). The racial makeup of Rocklin was 47,047 (82.6%) White, 858 (1.5%) African American, 410 (0.7%) Native American, 4,105 (7.2%) Asian, 150 (0.3%) Pacific Islander, 1,538 (2.7%) from other races, and 2,866 (5.0%) from two or more races. Hispanic or Latino of any race were 6,555 persons (11.5%).
The Census reported that 56,337 people (98.9% of the population) lived in households, 456 (0.8%) lived in non-institutionalized group quarters, and 181 (0.3%) were institutionalized.
There were 20,800 households, out of which 8,424 (40.5%) had children under the age of 18 living in them, 11,974 (57.6%) were opposite-sex married couples living together, 2,191 (10.5%) had a female householder with no husband present, 895 (4.3%) had a male householder with no wife present. There were 1,035 (5.0%) unmarried opposite-sex partnerships, and 124 (0.6%) same-sex married couples or partnerships. 4,403 households (21.2%) were made up of individuals and 1,652 (7.9%) had someone living alone who was 65 years of age or older. The average household size was 2.71. There were 15,060 families (72.4% of all households); the average family size was 3.18.
The population was spread out with 15,613 people (27.4%) under the age of 18, 5,306 people (9.3%) aged 18 to 24, 15,159 people (26.6%) aged 25 to 44, 14,668 people (25.7%) aged 45 to 64, and 6,228 people (10.9%) who were 65 years of age or older. The median age was 36.7 years. For every 100 females there were 94.0 males. For every 100 females age 18 and over, there were 90.4 males.
There were 22,010 housing units at an average density of 1,123.3 per square mile (433.7/km²), of which 13,797 (66.3%) were owner-occupied, and 7,003 (33.7%) were occupied by renters. The homeowner vacancy rate was 2.5%; the rental vacancy rate was 7.3%. 39,295 people (69.0% of the population) lived in owner-occupied housing units and 17,042 people (29.9%) lived in rental housing units.
As of the census of 2000, there were 36,330 people, 13,258 households, and 10,009 families residing in the city. The population density was 2,246.2 people per square mile (867.5/km²). There were 14,421 housing units at an average density of 891.6 per square mile (344.3/km²). The racial makeup of the city was 88.32% White, 0.91% African American, 0.80% Native American, 4.16% Asian, 0.19% Pacific Islander, 1.93% from other races, and 3.69% from two or more races. Hispanic or Latino of any race were 7.91% of the population. 16.8% were of German, 11.8% English, 10.6% Irish, 8.1% Italian and 6.5% American ancestry according to Census 2000.
There were 13,258 households out of which 42.6% had children under the age of 18 living with them, 62.3% were married couples living together, 9.4% had a female householder with no husband present, and 24.5% were non-families. 18.7% of all households were made up of individuals and 6.3% had someone living alone who was 65 years of age or older. The average household size was 2.74 and the average family size was 3.15.
In the city the population was spread out with 30.0% under the age of 18, 7.0% from 18 to 24, 33.7% from 25 to 44, 20.8% from 45 to 64, and 8.6% who were 65 years of age or older. The median age was 34 years. For every 100 females there were 95.6 males. For every 100 females age 18 and over, there were 92.6 males.
The median income for a household in the city was $84,508, according to the City of Rocklin website. Males had a median income of $54,426 versus $35,920 for females. The per capita income for the city was $26,910. About 3.1% of families and 4.5% of the population were below the poverty line, including 4.3% of those under age 18 and 3.5% of those age 65 or over.
The Educational Media Foundation is based in Rocklin. The Formica Company formerly operated a manufacturing plant in Rocklin. Rocklin is the U.S. headquarters for SMA America, LLC, the U.S.-based subsidiary of SMA Solar Technology AG, the world's largest manufacturer of solar inverters.][
The Rocklin area is home to eleven elementary schools, two middle schools, and two high schools - Rocklin High School and Whitney High School. It is also home to Victory High School and Rocklin Independent School, both of which make up the Rocklin Alternative Education Center.
Rocklin is the home of two colleges - Sierra College and William Jessup University, a private Christian university, which are both located conveniently in the outskirts of the Sacramento area.
Rocklin is served by Interstate 80 and State Route 65.
There is an Amtrak station in Rocklin that is served by the Capitol Corridor and the California Zephyr routes.
Blue Oaks Town Center is a 600,000-square-foot (56,000 m2) planned regional shopping center anchored by national tenants RC Willey (their first Sacramento location), Steinmart, Sportsman's Warehouse and Staybridge Suites Hotel. Blue Oaks Century Theatres and XD (formerly Mervyns) opened in November 2010 is a 16-screen, 3,000 seat theater. This center provides shopping, entertainment and dining with numerous retailers, a hotel, dinner houses, shops and professional services in an architecturally integrated town center setting. The center is located in the geographic center of the Roseville, Rocklin, Lincoln and South Placer County Trade Areas on Rocklin’s expanding Highway 65 retail corridor.
Toy Row, a stretch of Granite Drive in Rocklin along Interstate 80, is a shopping destination in Rocklin. Besides a silver and gold dealer, businesses on this half mile stretch include three boat dealers, several car dealers and recreational vehicle dealers.
Rocklin has an antique mall with over 35+ dealer spaces located on Rocklin Road off interstate 80(California).