Granite Bay, CA Profile: Facts & Data


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Granite Bay, California - Basic Facts

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The Granite Bay CDP(1) had a population of 21,442 as of July 1, 2021. Granite Bay ranks in the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in California. See peer rankings below.

The primary coordinate point for Granite Bay is located at latitude 38.7632 and longitude -121.1638 in Placer County. The formal boundaries for the Granite Bay Census Designated Place encompass a land area of 21.53 sq. miles and a water area of 0.04 sq. miles. Placer County is in the Pacific time zone (GMT -8). The elevation is 427 feet.

The Granite Bay Census Designated Place has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

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

  1. A Census Designated Place (CDP) is a statistical counterpart to a self-governing (incorporated) place such as a city, town, or village. A CDP is not a legal entity and has no governmental functions.

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  1. Granite Bay 2021 Demographic Data
  2. Growth Rates for Granite Bay (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 - 2021 Demographics

Granite Bay, CA Data & Demographics (As of July 1, 2021)


Total Population 21,442 (100%)
Population in Households 21,390 (99.8%)
Population in Families 19,340 (90.2%)
Population in Group Quarters1 52 ( 0.2%)
Population Density 997
Diversity Index2 38


Median Household Income $143,750
Average Household Income $190,932
% of Income for Mortgage4 26%
Per Capita Income $68,145
Wealth Index5 302


Total HU (Housing Units) 7,875 (100%)
Owner Occupied HU 6,834 (86.8%)
Renter Occupied HU 815 (10.3%)
Vacant Housing Units 227 ( 2.9%)
Median Home Value $894,560
Average Home Value $992,842
Housing Affordability Index3 93


Total Households 7,648
Average Household Size 2.8
Family Households 6,255
Average Family Size 3
  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.


2010-2021 2021-2026
Population 0.44% 0.91%
Households 0.54% 0.96%
Families 0.44% 0.92%
Median Household Income   1.76%
Per Capita Income   1.99%
Owner Occupied HU   0.97%

Granite Bay, CA - Peer Comparisons by Rank and Percentile

The table below compares Granite Bay to the other 1,521 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2021 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 # 334 78th
Population Density # 773 49th
Median Household Income # 89 94th
Housing Affordability Index # 913 60th
Per Capita Income # 126 92nd
Diversity Index # 1267 17th

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

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