County outline
Where Sandusky County is located
Area breakdown
Land accounts for 97.7% of Sandusky County’s measured area and water for 2.3%. Its combined area converts to 1,081.9 square kilometers or approximately 267,334 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 408.246 | 1,057.352 | 261,277.4 |
| Water | 9.464 | 24.512 | 6,057 |
| Total | 417.71 | 1,081.864 | 267,334.4 |
How Sandusky County compares
By original Census land area, Sandusky County ranks #65 of 88 in Ohio and #2476 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.936 times the Ohio county-equivalent median of 436 square miles. It accounts for 1% of the combined county land area in the state.
See the complete Ohio ranking · What counts as a county equivalent?
Population and density of Sandusky County
The Census Bureau estimates that 58,655 people lived in Sandusky County on July 1, 2025. That ranks #921 of 3,222 county equivalents nationally and #43 of 88 in Ohio. Since the April 1, 2020 estimates base of 58,908, the population has declined by 253 (−0.4%), compared with +0.9% for Ohio as a whole.
With 408.2 square miles of land, that is 144 people per square mile (55 per km²), placing Sandusky County #798 nationally for density and #35 in Ohio. The median county equivalent has 47 people per square mile; the Ohio median is 120. Put another way, there are about 4.5 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 58,880 | 58,754 | 58,554 | 58,734 | 58,651 | 58,655 |
| Change | — | −126 | −200 | +180 | −83 | +4 |
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 Sandusky County
10 incorporated places lie at least partly in Sandusky County. Together they are home to 32,667 people (55.7%); the other 25,988 (44.3%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Fremont city, with 15,765 residents in the county. Among places with at least 1,000 residents in 2020, Clyde city grew fastest since then (+0.8%).
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Fremont cityCounty seat | 15,765 | −1% | 8.741 |
| Clyde city | 6,361 | +0.8% | 5.249 |
| Bellevue cityAlso in 2 other counties | 4,587 | −0.3% | 6.129 |
| Gibsonburg village | 2,462 | −1.1% | 2.321 |
| Woodville village | 1,976 | −1.4% | 1.348 |
| Green Springs villageAlso in 1 other county | 679 | +4.1% | 1.16 |
| Lindsey village | 452 | −0.7% | 1.563 |
| Helena village | 208 | −1.9% | 0.291 |
| Burgoon village | 177 | −2.2% | 0.138 |
| Elmore villageAlso in 1 other county | 0 | — | 0.882 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Sandusky County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Sandusky County is a central county of the Fremont, OH Micropolitan Statistical Area. Sandusky County is the area’s only county equivalent, so the micro area has the same 408.2 square miles of land. By combined land it ranks #482 of 542 micropolitan areas, and #171 by population. It belongs to the Cleveland-Akron-Canton, OH Combined Statistical Area.
ZIP codes
17 ZIP Code Tabulation Areas have land in Sandusky County; 8 of them have most of their land inside the county, and the others mainly cover neighboring areas.
4340643407434104341643420434304343143435434424344943457434644346944811448244483644841
ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.
Counties bordering Sandusky County
Sandusky County shares a land border with 5 county equivalents. It has more land than 2 of them. The largest neighbor is Wood County (617.2 mi²) and the smallest is Erie County (251.3 mi²). Together with its neighbors, Sandusky County forms a block of 2,574.7 mi² of land, of which it holds 15.9%.
| Bordering county equivalent | Land mi² | Size vs. Sandusky | Compare |
|---|---|---|---|
| Wood County | 617.2 | 1.5× larger | Compare |
| Seneca County | 551 | 1.3× larger | Compare |
| Huron County | 492.2 | 1.2× larger | Compare |
| Ottawa County | 254.7 | 1.6× smaller | Compare |
| Erie County | 251.3 | 1.6× smaller | Compare |
How big is Sandusky County compared with U.S. states?
Sandusky County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.5 times as much. Ohio’s county land could hold about 100 areas the size of Sandusky County.
Another way to picture it: the same land area would fill a square about 20.2 miles (32.5 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 Sandusky County?
Sandusky County has more land than 746 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 Sandusky County at #2,501 nationally by total area, 25 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.
Its water share is 2.3%, compared with a national county-equivalent median of 1.2% — 1.1 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 Sandusky County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2475 | Buchanan County, Missouri | 408.3 | Compare |
| #2476 | Sandusky County, Ohio | 408.2 | This county |
| #2477 | Rush County, Indiana | 408.1 | 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 41.355319, -83.142776. 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: 1,057,351,863 m²; AWATER: 24,511,838 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 Sandusky County?
Sandusky County, Ohio has 408.2 square miles (1,057.4 km²) of land and 9.464 square miles of water, for a total area of 417.7 square miles. It ranks #2476 of 3,222 U.S. county equivalents by land area.
Is Sandusky County the largest county in Ohio?
No. Sandusky County ranks #65 of 88 in Ohio by land area. The largest is Ashtabula County, with 702.4 square miles of land.
What counties border Sandusky County?
Sandusky County shares a land border with Seneca County, Ottawa County, Wood County, Erie County, and Huron County.
What is the population of Sandusky County?
The Census Bureau estimates Sandusky County had 58,655 residents on July 1, 2025, ranking #921 of 3,222 county equivalents. That is 144 people per square mile of land.
What is the county seat of Sandusky County?
The county seat of Sandusky County is Fremont.
What cities and towns are in Sandusky County?
Sandusky County has 10 incorporated places. The most populous five are Fremont city, Clyde city, Bellevue city, Gibsonburg village, and Woodville village; 25,988 residents live outside any incorporated place.
Is Sandusky County part of a metropolitan area?
Yes. It is a central county of the Fremont, OH Micropolitan Statistical Area.
How many ZIP codes are in Sandusky County?
17 ZIP Code Tabulation Areas have land in Sandusky County, and 8 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Sandusky County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2.5 times as much land.
How many acres of land are in Sandusky County?
The land measurement converts to approximately 261,277 acres. Including water, total area is approximately 267,334 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.