Saint Augustine South, FL Profile: Facts & Data


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Saint Augustine South, Florida - Basic Facts

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The Saint Augustine South CDP(1) had a population of 5,246 as of July 1, 2021. Saint Augustine South ranks in the upper quartile for Population Density and the lower quartile for Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Florida. See peer rankings below.

The primary coordinate point for Saint Augustine South is located at latitude 29.8425 and longitude -81.3145 in St. Johns County. The formal boundaries for the Saint Augustine South Census Designated Place encompass a land area of 1.59 sq. miles and a water area of 0 sq. miles. St. Johns County is in the Eastern time zone (GMT -5). The elevation is 23 feet.

The Saint Augustine South 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.

Florida is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The Saint Augustine South Census Designated Place is located within St. Augustine CCD of St. Johns 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. Saint Augustine South 2021 Demographic Data
  2. Growth Rates for Saint Augustine South (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Florida Research Tools (Easy Tools & Current Data)
  3. Florida Data Comparison Tool - 2021 Demographics

Saint Augustine South, FL Data & Demographics (As of July 1, 2021)


Total Population 5,246 (100%)
Population in Households 5,212 (99.4%)
Population in Families 4,004 (76.3%)
Population in Group Quarters1 34 ( 0.6%)
Population Density 3,309
Diversity Index2 30


Median Household Income $70,020
Average Household Income $93,991
% of Income for Mortgage4 14%
Per Capita Income $40,517
Wealth Index5 138


Total HU (Housing Units) 2,395 (100%)
Owner Occupied HU 2,008 (83.8%)
Renter Occupied HU 229 ( 9.6%)
Vacant Housing Units 158 ( 6.6%)
Median Home Value $230,979
Average Home Value $243,336
Housing Affordability Index3 176


Total Households 2,237
Average Household Size 2.33
Family Households 1,421
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 0.43% 1.58%
Households 0.64% 1.65%
Families 0.03% 1.44%
Median Household Income   1.98%
Per Capita Income   2.14%
Owner Occupied HU   1.77%

Saint Augustine South, FL - Peer Comparisons by Rank and Percentile

The table below compares Saint Augustine South to the other 919 incorporated cities, towns and CDPs in Florida 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 # 474 49th
Population Density # 235 75th
Median Household Income # 245 73rd
Housing Affordability Index # 744 81st
Per Capita Income # 224 76th
Diversity Index # 686 25th

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

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