TheSecond Seminole War was fought in 1835 and from 1838 to 1839. Fort Vinton was built for this purpose near the intersection of present-dayFlorida State Road 60 and 122nd Avenue.[10]
In 1844, the county's portion of Mosquito County became part of newly created St. Lucia County. In 1855, St. Lucia County was renamedBrevard County. In 1905,St. Lucie County was formed from the southern portion of Brevard County; in 1925 Indian River County was formed from the northern portion of St. Lucie County.[11] It was named for theIndian River, which runs through the eastern portion of the county. In 2025, Indian River County celebrated itscentennial for turning 100 years old.[12]
On November 16 and 17, 2023, extreme rainfall struck northern Indian River County,causing severe flooding. Fourteen inches of rain fell in Fellsmere, and eleven inches of rain fell in Vero Lake Estates.[9][8][7][13][14][15]
On September 5, 2004, the county was affected by the category 2landfall ofHurricane Frances.[1] There was wide spread power outages, flooding, and high winds.
Only 21 days later, on September 26, 2004,Hurricane Jeanne made landfall near Indian River County as a category 3 hurricane with 120 mph winds. A special Tornado Warning was issued (precursor to theExtreme Wind Warning) for Indian River County due to the right eye wall of the storm striking the county. A 122 mph wind gust was reported inVero Beach, and 116 mph wind gust was reported inSebastian.[16]
Extreme Beach Erosion in Vero Beach due to Hurricane Jeanne
“Catastrophic” beach erosion occurred on the beaches of the county after 6–8 feet ofstorm surge was caused by Jeanne.[17] Widespread flooding occurred, which resulted in the closure of all barrier island bridges being closed. One fatality was caused when an elderly woman was attempting to evacuate her home inIndian River Shores. An F1 tornado touched down inWest Vero Corridor causing $34,000 (2025 USD) in damage.
A staggering $3.4 billion+ (2025 USD) of damage was inflicted on Indian River County alone, easily making the storm the costliest and most destructive hurricane in Indian River County history.[18]
On November 10, 2022,Hurricane Nicole made landfall near Vero Beach as aCategory 1 hurricane.[19] Mostly minor damage was reported, however, the iconic Jaycee Beach and Humiston Beach boardwalks sustained significant damage.[20]
Hurricane Milton spawning tornado outbreak in Florida on October 9
On October 9, 2024, asHurricane Milton approached Florida, Indian River County was part of a prolifictornado outbreak spawned by Milton.
Several strong tornadoes hit the county including theLakewood Park - Vero Beach EF3 tornado. Severe damage occurred in the Bethel Creek neighborhood of Vero Beach with homes sustaining heavy damage.[21][22] Numerous other tornadoes also touched down in the county, with two EF1 tornadoes hitting Downtown Vero Beach within the span of 20 minutes, causing extensive damage.[23] An EF2 tornado touched down farther west nearBlue Cypress Lake. In total, six tornadoes struck the county.[24]
Torrential rainfall also occurred from Milton, causingflash flooding in the county.[25] According to preliminary reports, 9.41 inches of rain fell in around 3 hours in Vero Beach.[26] Aflash flood warning was issued at 7PM EDT for most of eastern Indian River County due to ongoing flooding.[27]
According to theU.S. Census Bureau, the county has a total area of 617 square miles (1,600 km2), of which 503 square miles (1,300 km2) is land and 114 square miles (300 km2) (18.5%) is water.[28] Indian River County is theninth-smallest county in Florida by area.
A map of the racial demographics of Indian River County, Florida by Census tract
Legend
Non-Hispanic White
50–60%
60–70%
70–80%
80–90%
>90%
Hispanic
40–50%
60–70%
Black or African American
50–60%
70–80%
As of the2020 United States census, there were 159,788 people, 60,959 households, and 37,647 families residing in the county.
As of thecensus[39] of 2000, there were 112,947 people, 49,137 households, and 32,725 families residing in the county. The population density was 224 inhabitants per square mile (86/km2). There were 57,902 housing units at an average density of 115 per square mile (44/km2). The racial makeup of the county was 87.43%White, 8.19%Black orAfrican American, 0.25%Native American, 0.74%Asian, 0.03%Pacific Islander, 2.15% fromother races, and 1.21% from two or more races. 6.53% of the population wereHispanic orLatino of any race.
There were 49,137 households, out of which 21.70% had children under the age of 18 living with them, 54.50% weremarried couples living together, 8.90% had a female householder with no husband present, and 33.40% were non-families. 28.20% of all households were made up of individuals, and 16.10% had someone living alone who was 65 years of age or older. The average household size was 2.25 and the average family size was 2.72.
In the county, the population was spread out, with 19.20% under the age of 18, 6.00% from 18 to 24, 22.30% from 25 to 44, 23.30% from 45 to 64, and 29.20% who were 65 years of age or older. The median age was 47 years. For every 100 females there were 93.70 males. For every 100 females age 18 and over, there were 90.80 males.[40]
The median income for a household in the county was $39,635, and the median income for a family was $46,385. Males had a median income of $30,870 versus $23,379 for females. Theper capita income for the county was $27,227. About 6.30% of families and 9.30% of the population were below thepoverty line, including 13.60% of those under age 18 and 5.70% of those age 65 or over.
GoLine is Indian River County's main method of public transportation. The program was introduced in 1994 to provide an alternative option to driving. Due to County population increases in the early and mid 2000s, Indian River County devised a series of bus routes fromBarefoot Bay in southern Brevard County to the south end ofVero Beach. In 2006, GoLine (formerly known as Indian River Transit) was introduced with more stops along and through theTreasure Coast. By 2010, the GoLine system had a total of 14 stops with an additional four stops planned for 2011/2012. Riders pay no fare or fee to board the bus. In 2010 the buses operated between 8:00 A.M. and 5:00 P.M. weekdays and from 9:00 A.M. to 3:00 P.M. on Saturdays. Some routes have extended operating hours depending on location.[42][43]
Amtrak began planning to add service along the east coast of Florida, including a station inVero Beach, in 2000.[44] In 2012, Amtrak announced that it hoped to start service over theFlorida East Coast Railway (FEC) line in 2013.[45] The All Aboard Florida project (nowBrightline) was also announced in 2012, and now operates over part of the FEC track that Amtrak intended to use, but does not stop anywhere in Indian River County.[46]
Florida East Coast Railway serves a team yard in Vero Beach for off-line customers that don't have direct rail service via spurs. There are two lumber and sheetrock/structural steel customers who receive boxcars, center beam and bulkhead flatcars, and occasionally- gondolas, at the team yard.[47][48]
Healthcare, education, government, and retail sales are important employment segments in Indian River County. As of 2024[update] (some numbers have not been updated since 2019), the largest employers in the county were:
Indian River County lies at the northern end of a belt stretching toCollier County in the southwest that was the first part of Florida to politically distance itself from the "Solid South": the last Democrat to win a majority in the county wasFranklin D. Roosevelt in1944.[52] Only four Democrats have managed 40 percent or more of the county's vote since then.
In 1992, indeed, Ross Perot came second, fifteen votes ahead of President-electBill Clinton, this being one of only four Florida counties where he did so.
United States presidential election results for Indian River County, Florida[53][54]
^Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos can be of any race.[35][36]
^According to the Historical Records and State Archives Surveys published by Florida Works Progress Administration (available in the digital historical maps of Florida section of the UF library) and the Indian River County Historian Ruth Stanbridge