Fellsmere, Florida Demographics Guide

The Fellsmere population and people guide is the deep guide in this section, and the table below pairs each common Fellsmere question with its headline figure and the guide that explains it.

The population and people guide covers origin, age, language, birthplace, household size and schooling for the City of Fellsmere in full. Earnings and work sit in the Fellsmere income, poverty and jobs guide in the economy section, home values and rents in the Fellsmere housing guide, and the town school in the Fellsmere Academy guide. Every Fellsmere figure on this hub describes the city limits and comes from the Census release or the state estimate named next to it.

Census takers found 4,834 Fellsmere residents in April 2020, and Florida's April 1, 2025 estimate of 4,987 means the city has added only 153 people since then.

That 4,834 figure is the official 2020 Census count for Fellsmere city (U.S. Census Bureau, 2020 Census). The 2010 Census had found 5,197 Fellsmere residents (U.S. Census Bureau, 2010 Census), so between the two counts the city shrank by 363 people, roughly 7 percent.

Growth since 2020 has been slow next to the rest of Indian River County. In the state demographers' April 1, 2025 table, Fellsmere stands at 4,987, Sebastian at 27,367 and the county at 173,013 (Florida Office of Economic and Demographic Research). Sebastian added 2,313 people after the 2020 Census and the county added 13,225, while Fellsmere's gain was 153. Fellsmere holds about 2.9 percent of the county's people.

The ACS 2020-2024 5-year figure of 4,953 Fellsmere residents, with a margin of error of plus or minus 21 (ACS DP05), falls between the census count and the state estimate. For totals the Census Bureau points users to the 2020 Census or its Population Estimates Program, and to the ACS for characteristics such as percents, medians and rates (Census Bureau, Comparing ACS Data). This hub therefore quotes the 2020 Census count and the state estimate as the Fellsmere totals.

Half of Fellsmere's residents are 32 or younger, a median age about 23 years below the Indian River County median of 55.3 in the same ACS 2020-2024 release.

Children under 18 account for 30.6 percent of the Fellsmere population, while people 65 and older account for 8.8 percent (ACS DP05, Fellsmere). Countywide the shares run the other way: 15.0 percent under 18 and 34.8 percent aged 65 and over (ACS DP05, Indian River County). The single largest ten-year band in Fellsmere is ages 35 to 44, at 22.6 percent of the population.

Men outnumber women in Fellsmere by a wide margin, with an ACS sex ratio of 172.3 males for every 100 females (ACS DP05); the jobs those working-age residents hold are covered in the Fellsmere income, poverty and jobs guide. Some 52.7 percent of Fellsmere households have a child or teenager under 18 at home (ACS DP02), and the public school at 50 N. Cypress Street, listed by the federal school database as Fellsmere Elementary School, enrolled 605 students in the 2024-2025 school year (NCES Common Core of Data); the Fellsmere Academy guide covers that school today.

Fellsmere is 76.3 percent Hispanic or Latino in the ACS 2020-2024 estimates, mostly of Mexican origin, compared with 13.9 percent Hispanic across Indian River County.

Mexican heritage alone covers 67.7 percent of Fellsmere's residents (ACS DP05). The non-Hispanic White share is 12.2 percent, the non-Hispanic Black share 11.3 percent, and 4.1 percent of the city is Black or African American of Haitian origin. The county Hispanic share of 13.9 percent comes from the same release (ACS DP05, Indian River County).

Foreign-born residents are 31.5 percent of Fellsmere's population, and Latin America is the birthplace of 97.6 percent of that group (ACS DP02). Within the foreign-born group, 44.4 percent have become naturalized U.S. citizens. Across Indian River County the foreign-born share is 10.0 percent (ACS DP02, Indian River County).

Spanish dominates at home: the ACS finds 68.2 percent of Fellsmere residents aged 5 and over using it, and a quarter of that age group (25.4 percent) speaking Spanish and reporting English below the very well level (ACS DP02). The county figure for Spanish at home is 10.0 percent. The school roll shows the same pattern: Fellsmere Elementary School counted 500 Hispanic students among 605 enrolled in 2024-2025 (NCES Common Core of Data).

Fellsmere and Sebastian are both Indian River County cities, yet the ACS 2020-2024 figures describe two very different populations.

Sebastian's median age of 58.2 and its 36.8 percent share aged 65 and over (ACS DP05, Sebastian) track the county's older profile, while Fellsmere's figures run close to the opposite. Sebastian households average 2.26 people and 8.1 percent of Sebastian residents were born abroad (ACS DP02, Sebastian), against 3.90 people and 31.5 percent in Fellsmere. Read side by side, the table shows why county-wide averages say little about Fellsmere: a figure for Indian River County mostly reflects its unincorporated areas, home to 118,797 of the county's 173,013 people in the state's 2025 estimate (Florida EDR).

Fellsmere packs an average of 3.90 people into each of its 1,258 households, against 2.33 across Indian River County, and owners occupy 74.0 percent of the city's occupied homes.

Fellsmere families average 4.18 members in the ACS (ACS DP02), and the county household average of 2.33 comes from the same release (ACS DP02, Indian River County). Those large households share a small housing stock: 1,445 units in all, with mobile homes making up 22.9 percent of them and 12.4 percent dating from 1939 or earlier (ACS DP04). In 12.2 percent of occupied Fellsmere homes there are more than 1.5 occupants per room.

Turnover is low: 97.6 percent of Fellsmere residents were living at the same address one year before the survey (ACS DP02). Home broadband reaches 80.4 percent of Fellsmere households, below the county rate of 89.9 percent, and veterans make up 4.0 percent of Fellsmere's civilian adults against 9.6 percent countywide (ACS DP02, Indian River County).

Formal schooling is far shorter than the county norm: among Fellsmere adults 25 and older, 22.4 percent left school before 9th grade and 12.1 percent have finished a bachelor's or graduate degree (ACS DP02), compared with 33.8 percent holding a degree across Indian River County. Home values and rents for Fellsmere are covered in the housing and home values guide.

Fellsmere's ACS figures come from a small sample, so several carry wide margins of error that should be quoted with the figure.

The Fellsmere median household income of $55,893 carries a margin of error of plus or minus $15,377, and the poverty rate of 18.8 percent carries a margin of plus or minus 9.4 percentage points (ACS DP03). The Fellsmere population total, by contrast, is pinned down to plus or minus 21 people.

The Census Bureau also warns against comparing overlapping five-year datasets (Census Bureau, Comparing ACS Data): the ACS 2020-2024 Fellsmere figures should not be set against the 2019-2023 release as if they showed a one-year change. A valid Fellsmere trend compares non-overlapping periods, such as 2015-2019 against 2020-2024, or the 2010 and 2020 Census counts. The ACS 2020-2024 tables used on this hub were re-fetched from data.census.gov on October 15, 2026.