County outline
Where Indian River County is located
Area breakdown
Land accounts for 81.5% of Indian River County’s measured area and water for 18.5%. Its combined area converts to 1,597.1 square kilometers or approximately 394,641 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 502.555 | 1,301.611 | 321,635.2 |
| Water | 114.072 | 295.445 | 73,006.1 |
| Total | 616.627 | 1,597.057 | 394,641.3 |
How Indian River County compares
By original Census land area, Indian River County ranks #59 of 67 in Florida and #2068 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.722 times the Florida county-equivalent median of 696.5 square miles. It accounts for 0.9% of the combined county land area in the state.
See the complete Florida ranking · What counts as a county equivalent?
Population and density of Indian River County
The Census Bureau estimates that 172,799 people lived in Indian River County on July 1, 2025. That ranks #410 of 3,222 county equivalents nationally and #31 of 67 in Florida. Since the April 1, 2020 estimates base of 159,794, the population has grown by 13,005 (+8.1%), compared with +8.9% for Florida as a whole.
With 502.6 square miles of land, that is 344 people per square mile (133 per km²), placing Indian River County #458 nationally for density and #24 in Florida. The median county equivalent has 47 people per square mile; the Florida median is 209. Put another way, there are about 1.9 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 160,454 | 163,928 | 167,650 | 170,319 | 171,560 | 172,799 |
| Change | — | +3,474 | +3,722 | +2,669 | +1,241 | +1,239 |
U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.
Cities and towns in Indian River County
5 incorporated places lie at least partly in Indian River County. Together they are home to 55,001 people (31.8%); the other 117,798 (68.2%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Sebastian city, with 27,352 residents in the county. The county seat, Vero Beach city, has 17,603 residents. By land, Fellsmere city is the largest at 57.6 mi². Among places with at least 1,000 residents in 2020, Sebastian city grew fastest since then (+9.3%).
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Sebastian city | 27,352 | +9.3% | 17.4 |
| Vero Beach cityCounty seat | 17,603 | +7.6% | 11.6 |
| Fellsmere city | 5,025 | +4.1% | 57.6 |
| Indian River Shores town | 4,467 | +5.2% | 5.124 |
| Orchid town | 554 | +6.1% | 1.236 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Indian River County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Indian River County is a central county of the Sebastian-Vero Beach-West Vero Corridor, FL Metropolitan Statistical Area. Indian River County is the area’s only county equivalent, so the metro area has the same 502.6 square miles of land. By combined land it ranks #361 of 393 metropolitan areas, and #262 by population. It belongs to the Miami-Port St. Lucie-Fort Lauderdale, FL Combined Statistical Area.
ZIP codes
9 ZIP Code Tabulation Areas have land in Indian River County, and each lies mostly inside the county.
329483295832960329623296332966329673296832970
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Indian River County
Indian River County shares a land border with 4 county equivalents. Each of them has more land than Indian River County. The largest neighbor is Osceola County (1,327.3 mi²) and the smallest is St. Lucie County (571.9 mi²). Together with its neighbors, Indian River County forms a block of 4,186 mi² of land, of which it holds 12%.
| Bordering county equivalent | Land mi² | Size vs. Indian River | Compare |
|---|---|---|---|
| Osceola County | 1,327.3 | 2.6× larger | Compare |
| Brevard County | 1,015 | 2× larger | Compare |
| Okeechobee County | 769.3 | 1.5× larger | Compare |
| St. Lucie County | 571.9 | 1.1× larger | Compare |
How big is Indian River County compared with U.S. states?
Indian River County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.1 times as much. Florida’s county land could hold about 107 areas the size of Indian River County.
Another way to picture it: the same land area would fill a square about 22.4 miles (36.1 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.
State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.
What stands out about Indian River County?
Indian River County has more land than 1,154 of the other 3,221 county equivalents in the dataset.
A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.
Does including water change its rank?
Using land plus water places Indian River County at #1,689 nationally by total area, 379 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.
Its water share is 18.5%, compared with a national county-equivalent median of 1.2% — 17.3 percentage points higher. This describes the statistical geography’s land/water mix, not flood exposure or developable land.
Closest positions in the national land ranking
These entries sit immediately beside Indian River County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2067 | Buchanan County, Virginia | 502.9 | Compare |
| #2068 | Indian River County, Florida | 502.6 | This county |
| #2069 | Boone County, West Virginia | 502.4 | Compare |
Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.
Representative coordinates
The Census internal point is 27.687264, -80.560780. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 1,301,610,495 m²; AWATER: 295,444,079 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Indian River County?
Indian River County, Florida has 502.6 square miles (1,301.6 km²) of land and 114.1 square miles of water, for a total area of 616.6 square miles. It ranks #2068 of 3,222 U.S. county equivalents by land area.
Is Indian River County the largest county in Florida?
No. Indian River County ranks #59 of 67 in Florida by land area. The largest is Collier County, with 1,997 square miles of land.
What counties border Indian River County?
Indian River County shares a land border with Brevard County, St. Lucie County, Okeechobee County, and Osceola County.
What is the population of Indian River County?
The Census Bureau estimates Indian River County had 172,799 residents on July 1, 2025, ranking #410 of 3,222 county equivalents. That is 344 people per square mile of land.
What is the county seat of Indian River County?
The county seat of Indian River County is Vero Beach.
What cities and towns are in Indian River County?
Indian River County has 5 incorporated places. The most populous are Sebastian city, Vero Beach city, Fellsmere city, Indian River Shores town, and Orchid town; 117,798 residents live outside any incorporated place.
Is Indian River County part of a metropolitan area?
Yes. It is a central county of the Sebastian-Vero Beach-West Vero Corridor, FL Metropolitan Statistical Area.
How many ZIP codes are in Indian River County?
9 ZIP Code Tabulation Areas have land in Indian River County, and 9 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Indian River County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2.1 times as much land.
How many acres of land are in Indian River County?
The land measurement converts to approximately 321,635 acres. Including water, total area is approximately 394,641 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.