Arroyo Grande, CA Profile: Facts, Map & Data


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Arroyo Grande, California - Basic Facts

The City of Arroyo Grande had a population of 18,257 as of July 1, 2018.

The primary coordinate point for Arroyo Grande is located at latitude 35.1243 and longitude -120.5849 in San Luis Obispo County. The formal boundaries for the City of Arroyo Grande (see map below) encompass a land area of 5.83 sq. miles and a water area of 0 sq. miles. San Luis Obispo County is in the Pacific time zone (GMT -8). The elevation is 118 feet.

The City of Arroyo Grande (GNIS ID: 2409734) 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 Arroyo Grande is located within Arroyo Grande CCD of San Luis Obispo County.

Beneath the boundary map are tables with Arroyo Grande population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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City of Arroyo Grande, CA Boundary Map

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Arroyo Grande, CA Data & Demographics (As of July 1, 2018)


Total Population 18,257
Population in Households 18,106
Population in Familes 14,613
Population in Group Qrtrs 151
Population Density2 3,130
Diversity Index3 51


Median Household Income $71,053
Average Household Income $96,229
Per Capita Income $39,598


Total Housing Units 8,005 (100%)
Owner Occupied HU 5,130 (64.1%)
Renter Occupied HU 2,291 (28.6%)
Vacant Housing Units 584 ( 7.3%)
Median Home Value $603,122
Average Home Value $649,995


Total Households 7,421
Average Household Size 2.44
Family Households 4,884
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 race 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.


2010-2017 2017-2022
Population 0.69% 0.79%
Households 0.56% 0.75%
Families 0.55% 0.74%
Median Household Income   3.52%
Per Capita Income   3.61%

Arroyo Grande, CA - Peer Comparisons by Rank and Percentile

The table below compares Arroyo Grande to the other 1,516 incorporated cities, towns and CDPs in California by rank and percentile using July 1, 2018 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 # 365 76th
Population Density # 438 71st
Diversity Index # 986 35th
Median Household Income # 517 66th
Per Capita Income # 415 73rd

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

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