Sebastian, FL Profile: Facts & Data

The primary coordinate point for Sebastian is located at latitude 27.8164 and longitude -80.4706 in Indian River County. The formal boundaries for the City of Sebastian encompass a land area of 13.68 sq. miles and a water area of 0.88 sq. miles. Indian River County is in the Eastern time zone (GMT -5).

The City of Sebastian 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.

Florida is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The City of Sebastian is located within Vero Beach CCD of Indian River County.

Sebastian, FL Data & Demographics (As of July 1, 2025)

POPULATION
Total Population	26,395 (100%)
Population in Households	26,373 (99.9%)
Population in Families	21,071 (79.8%)
Population in Group Quarters¹	22 ( 0.1%)
Population Density	1,517
Diversity Index²	44


INCOME
Median Household Income	$73,014
Average Household Income	$95,019
% of Income for Mortgage⁴	32%
Per Capita Income	$42,856
Wealth Index⁵	96
Socioeconomic Status Index⁶	Moderate (53.5)

HOUSING
Total HU (Housing Units)	12,859 (100%)
Owner Occupied HU	10,160 (79.0%)
Renter Occupied HU	1,744 (13.6%)
Vacant Housing Units	955 ( 7.4%)
Median Home Value	$371,233
Average Home Value	$447,571
Housing Affordability Index³	71

HOUSEHOLDS
Total Households	11,904
Average Household Size	2.22
Family Households	7,958
Average Family Size	3.00

NOTES

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.
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.
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.
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).
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.
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.

Sebastian, FL - Peer Comparisons by Rank and Percentile

The table below compares Sebastian to the other 956 incorporated cities, towns and CDPs in Florida by rank and percentile using July 1, 2025 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.

GROWTH RATE / YEAR	2020-2025	2025-2030
Population	0.99%	1.18%
Households	1.19%	1.28%
Families		1.28%
Median Household Income		2.41%
Per Capita Income		3.01%
Owner Occupied HU		1.70%

Variable Description	Rank	Percentile
Total Population	# 165	83rd
Population Density	# 509	47th
Median Household Income	# 493	49th
Housing Affordability Index	# 441	46th
Per Capita Income	# 417	56th
Diversity Index	# 660	31st

Sebastian, FL Profile: Facts & Data

Sebastian, Florida - Basic Facts

Sebastian, FL Data & Demographics (As of July 1, 2025)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Sebastian, FL - Peer Comparisons by Rank and Percentile

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Indian River County