Rocklin, CA Profile: Facts & Data


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Rocklin, California - Basic Facts

The City of Rocklin had a population of 73,051 as of July 1, 2023. Rocklin ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for Rocklin is located at latitude 38.7907 and longitude -121.2358 in Placer County. The formal boundaries for the City of Rocklin encompass a land area of 19.55 sq. miles and a water area of 0.05 sq. miles. Placer County is in the Pacific time zone (GMT -8).

The City of Rocklin has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

California is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Rocklin is located within Rocklin CCD of Placer County.

Jump to... (On This Page!)
  1. Rocklin 2023 Demographic Data
  2. Growth Rates for Rocklin (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. California Research Tools (Easy Tools & Current Data)
  3. California Data Comparison Tool - 2023 Demographics

Rocklin, CA Data & Demographics (As of July 1, 2023)


Total Population 73,051 (100%)
Population in Households 72,044 (98.6%)
Population in Families 61,331 (84.0%)
Population in Group Quarters1 1,007 ( 1.4%)
Population Density 3,688
Diversity Index2 63


Median Household Income $113,398
Average Household Income $152,514
% of Income for Mortgage4 35%
Per Capita Income $54,361
Wealth Index5 163
Socioeconomic Status Index6 Moderate (59.0)


Total HU (Housing Units) 26,969 (100%)
Owner Occupied HU 18,206 (67.5%)
Renter Occupied HU 7,823 (29.0%)
Vacant Housing Units 940 ( 3.5%)
Median Home Value $651,086
Average Home Value $704,968
Housing Affordability Index3 70


Total Households 26,029
Average Household Size 2.77
Family Households 18,909
Average Family Size 3.00
  1. Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
  3. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  4. The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
  5. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
  6. The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.


2020-2023 2023-2028
Population 0.62% 0.39%
Households 0.85% 0.58%
Families   0.51%
Median Household Income   2.11%
Per Capita Income   2.70%
Owner Occupied HU   0.71%

Rocklin, CA - Peer Comparisons by Rank and Percentile

The table below compares Rocklin to the other 1,611 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2023 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 125 92nd
Population Density # 375 77th
Median Household Income # 284 82nd
Housing Affordability Index # 1120 70th
Per Capita Income # 396 75th
Diversity Index # 979 39th

Additional comparisons and rankings can be made with a VERY EASY TO USE California Census Data Comparison Tool.

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