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City of Rocklin

  •   State: 
    Placer County
      County FIPS: 
    38°48′0″N 121°14′48″W
      Area total: 
    19.83 sq mi (51.37 km²)
      Area land: 
    19.81 sq mi (51.31 km²)
      Area water: 
    0.02 sq mi (0.06 km²)
    249 ft (76 m)
    Incorporated February 24, 1893
  •   Latitude: 
      Dman name cbsa: 
    Sacramento-Roseville-Folsom, CA
    Pacific Standard Time (PST) UTC-8:00; Pacific Daylight Time (PDT) UTC-7:00
      ZIP codes: 

    Rocklin, Placer County, California, United States

  •   Population: 
      Population density: 
    3,474.15 residents per square mile of area (1,341.38/km²)
      Household income: 
      Unemployment rate: 
  •   Sales taxes: 
      Income taxes: 

Rocklin is a city in Placer County, California, about 22 miles (35 km) from Sacramento. It is about 6.1 miles (9.8 km) northeast of Roseville and shares borders with Granite Bay, Loomis and Lincoln. As of the 2010 census, Rocklin's population was 56,974. The California Department of Finance placed the 2019 population at 68,823. Rocklin has a hot-summer Mediterranean climate (Köppen Csa), characterized by cool, wet winters and hot, dry summers. The city has an area of 19.6 square miles (51 km²), of which 0.05 squaremile (0.13 km²) or 0.27% is water. In 1864, the Central Pacific Railroad completed an extension of its track southwest from Newcastle to Secret Ravine. It named the area Rocklin after its granite quarry and used the site as a refueling and water stop. Finnish immigrants settled in Rocklin starting in the 1870s, and Spanish settlers arriving by way of Hawaii settled in rocklin in the early 20th century. The town incorporated in 1893. In August 2014, it is the largest rail facility near the U.S. West Coast. The Central Pacific moved its facility from Rocklin to Roseville in 1908, where more land was available for expansion. The Roseville site has remained in continuous use since, and is still in use as of August 2014. The Rocklin post office opened in 1868.


Nisenan Maidu occupied both permanent villages and temporary summer shelters along the rivers and streams that miners sifted, sluiced, dredged and dammed to remove the gold. In 1860, the U.S. Census counted 440 residents in the area of Secret Ravine, of whom about 16% had been born in Ireland and the majority of whom worked as miners. The Central Pacific Railroad completed an extension of its track southwest from Newcastle in 1864, and used the site as a refueling and water stop. In 1908, the Central Pacific moved its facility from Rocklin to Roseville, where more land was available for expansion. Finnish immigrants settled in Rocklin starting in the 1870s, and Spanish settlers arriving by way of Hawaii settled in the early 20th century. The town incorporated in 1893. As of August 2014, it is the largest rail facility near the West Coast. It is located between Roseville and Loomis southeast of Interstate 80. It has a population of 542, with most of its residents being Irish immigrants who had forgone mining and were working for the railroad. In 1869, a group of laid-off Chinese railroad workers moved to secret Ravine to mine and raise vegetables which they sold locally. The Chinese community was violently driven out in September 1876 after a group. of Chinese was falsely accused of murdering three people near Rocklin. The area was still known as China Gardens as of 1974. The Rocklin post office opened in 1868.


Rocklin has a hot-summer Mediterranean climate (Köppen Csa), characterized by cool, wet winters and hot, dry summers. Summers are hot, with an average July high of 94 °F (34 °C), and mostly rainless. Winters are cool, with a December average of 47 °C (8 °F), and see plenty of rain. Rocklin very rarely sees any snow accumulation. The degree of diurnal temperature variation varies greatly depending on time of year. It ranges from only 14 °F in January to 33 °C in July. The city has an area of 19.6 square miles (51 km²), of which 0.05 square miles is water. The area of Rocklin is 0.13 km², or 0.27% of the U.S. total land area. It has an average population of 1,077,000 (1,081,000 people per square mile) and an average rainfall of 1.2 inches (4.7mm) per year. The average temperature in Rocklin in July is 94°F (34°C) and in December it is 47°F. The temperature in July ranges from 14°F to 33°F in July, depending on the time of the year. In July, the average rainfall is 1.3 inches (5.4mm) and the average monthly rainfall is 2.4 inches (7.5mm) Rocklin has an annual rainfall of 0.7 inches (1.4 mm).


The California Department of Finance calculated the population of Rocklin at 69,249 with a 3.8% population growth over 2018. At the 2010 census Rocklin had a population of 56,974. There were 22,010 housing units at an average density of 1,123.3 per square mile, of the occupied units 13,797 (66.3%) were owner-occupied and 7,003 (33.7%) were rented. The median income for a household in the city was $274,274, according to the city's 2010 census. In the 2000 census there were 36,330 people in 13,258 households, including 10,009 families, in Rocklin. The racial makeup of the city is 88.32% White, 0.91% African American, 4.16% Asian, 4,16% Pacific Islander, 1.93% from other races, and 3.69% from two or more races. Hispanic or Latino of any race were 7.91%. 16.8%. were of German, 11.8%, English, 10.6% Irish, 8.1% Italian and 6.5% American ancestry according to Census 2000. The average household size was 2.71. There are 15,060 families (72.4% of households); the average family size was 3.18. The age distribution was 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 or older.


As of April 2016, Rocklin had an estimated civilian work force of 30,100 with an unemployment rate of 4.4%. Approximately 40% of Rocklin citizens over age 25 hold a bachelor's degree or higher. Top Rocklin employers include large multinational corporations, retail outlets, education and government. A section of Granite Drive along Interstate 80 known as Toy Row has high-end auto dealerships, RV and Boat retailers, and a local antique mall. The city has four districts with distinct architectural guidelines: the University District, Granite District, College District, and Quarry District. Rocklin is located on the California-Nevada border and was once home to the Granite Mining Company, which went out of business in 2004. It is now known as the Rocklin Unified School District and has a population of about 30,000. It was once the site of one of the largest mining operations in the United States, until the U.S. government took over the mining business in the 1970s and 1980s. The town is located near the junction of Highway 65 and Interstate 80, and is home to a number of major shopping centers, including the Blue Oaks Town Center and Rocklin Commons. It also has a large number of restaurants and bars, many of which are located along the Highway 65 corridor. It has a reputation for being a great place to eat, especially in the summer, when many of its residents are away from home for the duration of the school year. The Rocklin River runs through the city and is a popular tourist destination.


The Rocklin area is home to 13 elementary schools, two middle schools, and two high schools. Sierra College and William Jessup University are also located in the area. The Rocklin Unified School District is made up of the Rocklin, Sierra College, and Williams Jessup campuses. The district also includes two alternative education institutions, Rocklin High School and Rocklin Middle School. The school district is part of the Northern California School District, which was formed in the 1970s. It is one of the largest school districts in the U.S., with more than 100,000 students in the district. It was founded in the 1950s and has been in operation since the 1960s. The area is also home to the California Institute of the Arts and the University of California, San Francisco, which were established in the late 1960s and early 1970s, respectively. It also includes the Sierra College campus and the William Jess up University campus, both of which opened in the 1980s and 1990s. In the 1990s, the district added two more schools to its list of schools, including Rocklin College and Sierra College. It has a population of more than 20,000 people, including 2,500 students at Sierra College in the Sierra foothills, and 2,000 at the university campus in the San Francisco Bay Area. Rocklin has a reputation for being a good school district, with a high school graduation rate in the mid- to high-teens and a high-school graduation rate of over 80%.


Interstate 80 and State Route 65 intersect in Rocklin, and historic U.S. Route 40 runs through town. The Rocklin Amtrak station is served by Amtrak California's Capitol Corridor route. Rocklin is located in the Central Coast region of California, near the San Francisco Bay Area and the San Diego area. The town has a population of about 2,000, according to the 2010 census. It is located on California's Central Coast and is located near the border with Oregon and Bakersfield. The city's population is about 1,000. It has an estimated population of 2,200, the 2010 Census says. It also has a number of small businesses, such as a small grocery store and a bank, that have opened in the past few years. It's also home to the Rocklin High School, which was founded in the early 1900s. It was the first high school in the state to open in the town's history, and is now one of the top two schools in California. The high school has a junior high, high school, and a middle school that were all built in the 1950s and 1960s. In the 1970s and 1980s, the town was the site of the California State Fair, which celebrated its 100th anniversary. The state's first state fair was held in the late 1970s, and the first state high school opened in 1978. The first state college opened in 1979, and it is now the California Institute of Technology, which is also in the city.

Air Quality, Water Quality, Superfund Sites & UV Index

The Air Quality index is in Rocklin, Amador County, California = 27.6. These Air Quality index is based on annual reports from the EPA. Higher values are better (100=best). The number of ozone alert days is used as an indicator of air quality, as are the amounts of seven pollutants including particulates, carbon monoxide, sulfur dioxide, lead, and volatile organic chemicals. The Water Quality Index is 53. A measure of the quality of an area’s water supply as rated by the EPA. Higher values are better (100=best). The EPA has a complex method of measuring the watershed quality, using 15 indicators such as pollutants, turbidity, sediments, and toxic discharges. The Superfund Sites Index is 81. Higher is better (100=best). Based upon the number and impact of EPA Superfund pollution sites in the county, including spending on the cleanup efforts. The UV Index in Rocklin = 4.8 and is a measure of an area's exposure to the sun's ultraviolet rays. This is most often a combination of sunny weather, altitude, and latitude. The UV Index has been defined by the WHO ( and is uniform worldwide.


The most recent city population of 1,250 individuals with a median age of 34.6 age the population grows by 53.23% in Rocklin, Amador County, California population since 2000 and are distributed over a density of 3,474.15 residents per square mile of area (1,341.38/km²). There are average 2.77 people per household in the 20,085 households with an average household income of $93,196 a year. The unemployment rate in Alabama is of the available work force and has dropped -5.76% over the most recent 12-month period and the projected change in job supply over the next decade based on migration patterns, economic growth, and other factors will increase by 20.08%. The number of physicians in Rocklin per 100,000 population = 249.3.


The annual rainfall in Rocklin = 22.3 inches and the annual snowfall = 0.2 inches. The annual number of days with measurable precipitation (over .01 inch) = 54. The average number of days per year that are predominantly sunny = 255. 97 degrees Fahrenheit is the average daily high temperature for the month of July and 33.3 degrees Fahrenheit is the average daily low temperature for the month of January. The Comfort Index (higher=better) is 51, where higher values mean a more pleasant climate. The Comfort Index measure recognizes that humidity by itself isn't the problem. (Have you noticed nobody ever complains about the weather being 'cold and humid?) It's in the summertime that we notice the humidity the most, when it's hot and muggy. Our Comfort Index uses a combination of afternoon summer temperature and humidity to closely predict the effect that the humidity will have on people.

Median Home Cost

The percentage of housing units in Rocklin, Amador County, California which are owned by the occupant = 72.74%. A housing unit is a house, apartment, mobile home, or room occupied as separate living quarters. The average age of homes = 10 years with median home cost = $268,090 and home appreciation of -12.26%. This is the value of the years most recent home sales data. Its important to note that this is not the average (or arithmetic mean). The median home price is the middle value when you arrange all the sales prices of homes from lowest to highest. This is a better indicator than the average, because the median is not changed as much by a few unusually high or low values. The property tax rate of $8.58 shown here is the rate per $1,000 of home value. If for simplification for example the tax rate is $14.00 and the home value is $250,000, the property tax would be $14.00 x ($250,000/1000), or $3500. This is the 'effective' tax rate.


The local school district spends $4,083 per student. There are 20.5 students for each teacher in the school, 5078 students for each Librarian and 861 students for each Counselor. 11.57% of the area’s population over the age of 25 with an Associate Degree or other 2-year college degree, 27.98% with a master’s degree, Ph.D. or other advanced college degree and 10.57% with high school diplomas or high school equivalency degrees (GEDs).

  • Rocklin's population in Placer County, California of 1,050 residents in 1900 has increased 1,19-fold to 1,250 residents after 120 years, according to the official 2020 census.

    Approximately 50.88% female residents and 49.12% male residents live in Rocklin, Amador County, California.

    As of 2020 in Rocklin, Amador County, California are married and the remaining 32.48% are single population.

  • 29.9 minutes is the average time that residents in Rocklin require for a one-way commute to work. A long commute can have different effects on health. A Gallup poll in the US found that in terms of mental health, long haul commuters are up to 12 percent more likely to experience worry, and ten percent less likely to feel well rested. The Gallup poll also found that of people who commute 61­–90 minutes each day, a whopping one third complained of neck and back pain, compared to less than a quarter of people who only spend ten minutes getting to work.

    81.13% of the working population which commute to work alone in their car, 8.81% of the working population which commutes to work in a carpool, 0.65% of the population that commutes using mass transit, including bus, light rail, subway, and ferry. 7.14% of the population that has their home as their principal place of work.

  • Of the total residential buildings in Rocklin, Amador County, California, 72.74% are owner-occupied homes, another 19.10% are rented apartments, and the remaining 8.16% are vacant.

  • The 36.34% of the population in Rocklin, Amador County, California who identify themselves as belonging to a religion are distributed among the following most diverse religions.

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