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People Statistics · City

Population in Sebastian

2010 – 2025 · 16 data points 79 of 243 · Towns of Florida Updated Oct 23, 2026
People · Sebastian Indian River County Florida United States

Source: U.S. Census Bureau, Population Estimates Program, 2010 – 2025

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Overview 7 figures People 21 figures Economy 20 figures Housing 8 figures Education 10 figures Tourism 3 figures Climate 8 figures
Latest value · 2025 27,352 +1.4% since 2024
Towns of Florida · 2025 79 of 243 Place 1 is the highest value.
since 2015 +18% +1.5% a year on average
share of Indian River County 15.8% Indian River County: 172,799 · 2025
Population, 2010 – 2025 people
+18% since 2015

Source: U.S. Census Bureau, Population Estimates Program, 2010 – 2025

Compared with Population · people
Sebastian 27,352
Indian River County 173K
Florida 23M
United States 342M
World 8.2B

Sources: U.S. Census Bureau, Population Estimates Program · World Bank — World Development Indicators

The series at a glance Sebastian · 2010 – 2025
Latest value 27,352 · 2025
First value 21,937 · 2010
Highest 27,352 · 2025
Lowest 21,919 · 2011
Average change +1.5% a year on average
Data points 16

By year

All years · 2010 – 2025

YearSebastianChange Indian River CountyFloridaUnited StatesWorld
2025 27,352 +1.4% 173K 23M 342M 8.2B
2024 26,975 +0.3% 172K 23M 340M 8.1B
2023 26,907 +2.0% 170K 23M 337M 8.1B
2022 26,388 +2.7% 168K 22M 334M 8B
2021 25,682 +2.3% 164K 22M 332M 7.9B
2020 25,115 +1.2% 160K 22M 332M 7.9B
2019 24,816 +1.1% 158K 21M — 7.8B
2018 24,540 +1.5% 155K 21M — 7.7B
2017 24,185 +1.5% 153K 21M — 7.6B
2016 23,817 +2.7% 150K 21M — 7.5B
2015 23,187 +2.2% 146K 20M — 7.4B
2014 22,695 +2.2% 144K 20M — 7.4B
2013 22,204 +0.7% 141K 20M — 7.3B
2012 22,039 +0.5% 140K 19M — 7.2B
2011 21,919 −0.1% 139K 19M — 7.1B
2010 21,937 138K 19M — 7B

Sources: U.S. Census Bureau, Population Estimates Program · World Bank — World Development Indicators, 2010 – 2025

Ranking · Towns of Florida

2021 · Place 1 is the highest value.

Year: 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014
Highest first Lowest first A–Z
#TerritoryPopulation
1 Jacksonville 958K
2 Miami 442K
3 Tampa 394K
4 St. Petersburg 260K
5 Hialeah 221K
6 Port St. Lucie 218K
7 Cape Coral 204K
8 Fort Lauderdale 182K
9 Pembroke Pines 170K
10 Hollywood 153K
11 Miramar 135K
12 Coral Springs 133K
13 Palm Bay 123K
14 West Palm Beach 118K
15 Clearwater 117K
16 Pompano Beach 112K
17 Miami Gardens 111K
18 Davie 106K
19 Boca Raton 98,851
20 Sunrise 96,332
21 Deltona 95,468
22 Palm Coast 93,788
23 Fort Myers 93,359
24 Plantation 93,082
25 Deerfield Beach 86,543
…
78 Palm Springs 26,769
79 Venice 26,302
80 Key West 26,005
81 Sebastian 25,682
82 Tarpon Springs 25,584
83 Palmetto Bay 23,875
84 Jacksonville Beach 23,565
…

Source: U.S. Census Bureau, Population Estimates Program, 2021

What it means

How many people live here — residents, not visitors.

How it is calculated

Official count or estimate of residents for each year: a census plus births, deaths and moves since then. Estimates are revised when a new census comes out.