County outline
Where Susquehanna County is located
Area breakdown
Land accounts for 99% of Susquehanna County’s measured area and water for 1%. Its combined area converts to 2,155.2 square kilometers or approximately 532,569 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 823.494 | 2,132.84 | 527,036.2 |
| Water | 8.645 | 22.39 | 5,532.8 |
| Total | 832.139 | 2,155.23 | 532,569 |
How Susquehanna County compares
By original Census land area, Susquehanna County ranks #22 of 67 in Pennsylvania and #1027 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.26 times the Pennsylvania county-equivalent median of 653.3 square miles. It accounts for 1.8% of the combined county land area in the state.
See the complete Pennsylvania ranking · What counts as a county equivalent?
Population and density of Susquehanna County
The Census Bureau estimates that 38,237 people lived in Susquehanna County on July 1, 2025. That ranks #1,255 of 3,222 county equivalents nationally and #54 of 67 in Pennsylvania. Since the April 1, 2020 estimates base of 38,431, the population has declined by 194 (−0.5%), compared with +0.4% for Pennsylvania as a whole.
With 823.5 square miles of land, that is 46 people per square mile (18 per km²), placing Susquehanna County #1,624 nationally for density and #57 in Pennsylvania. The median county equivalent has 47 people per square mile; the Pennsylvania median is 137. Put another way, there are about 14 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 38,355 | 38,451 | 38,157 | 38,197 | 38,180 | 38,237 |
| Change | — | +96 | −294 | +40 | −17 | +57 |
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 Susquehanna County
Susquehanna County is divided into 40 municipalities and townships. In Pennsylvania, county subdivisions are local governments, and together they cover all of the county’s land and residents.
The most populous is Bridgewater township, with 2,624 residents (6.9% of the county). The largest by land is Auburn township, at 50.1 mi², or 6.1% of the county’s land. The county seat, Montrose borough, has 1,275 residents. Among those with at least 1,000 residents in 2020, Rush township grew fastest since then (+1.4%).
| County subdivision | Population 2025 | Since 2020 | Land mi² | Share of county land |
|---|---|---|---|---|
| Bridgewater township | 2,624 | −0.1% | 41 | 5% |
| Clifford township | 2,092 | −0.1% | 40.5 | 4.9% |
| New Milford township | 1,780 | −0.7% | 44.8 | 5.4% |
| Forest City borough | 1,741 | −2.1% | 0.915 | 0.1% |
| Auburn township | 1,737 | +0.5% | 50.1 | 6.1% |
| Great Bend township | 1,682 | −1.1% | 36.2 | 4.4% |
| Lenox township | 1,589 | −0.7% | 40.6 | 4.9% |
| Silver Lake township | 1,498 | −1.4% | 32.7 | 4% |
| Springville township | 1,483 | +1% | 30.6 | 3.7% |
| Susquehanna Depot borough | 1,336 | −2.1% | 0.737 | 0.1% |
| Montrose boroughCounty seat | 1,275 | −1.5% | 1.287 | 0.2% |
| Harford township | 1,249 | −0.2% | 32.9 | 4% |
| Dimock township | 1,224 | +0.2% | 29 | 3.5% |
| Hallstead borough | 1,167 | −1% | 0.418 | 0.1% |
| Rush township | 1,155 | +1.4% | 38.4 | 4.7% |
Show the other 25 subdivisions
| Name | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Liberty township | 1,131 | +0.1% | 29.6 |
| Forest Lake township | 1,110 | −0.6% | 29.8 |
| Gibson township | 1,010 | +0.2% | 31.9 |
| Jackson township | 839 | −1.9% | 26.1 |
| Franklin township | 837 | +0.8% | 23.7 |
| New Milford borough | 796 | −2.2% | 1.016 |
| Brooklyn township | 786 | −0.5% | 24.3 |
| Lathrop township | 770 | +0.1% | 20.4 |
| Herrick township | 718 | +1% | 24.7 |
| Choconut township | 681 | −0.1% | 20.2 |
| Great Bend borough | 620 | −1.9% | 0.292 |
| Oakland borough | 549 | −2.3% | 0.446 |
| Ararat township | 516 | −2.1% | 18.6 |
| Harmony township | 514 | +0.2% | 31.3 |
| Oakland township | 500 | +1.8% | 16.5 |
| Lanesboro borough | 496 | −1.4% | 2.617 |
| Jessup township | 483 | +3% | 21.2 |
| Thompson township | 428 | −2.3% | 21.9 |
| Apolacon township | 424 | 0% | 22.5 |
| Hop Bottom borough | 314 | +1.3% | 0.606 |
| Middletown township | 275 | −1.8% | 28.9 |
| Thompson borough | 246 | −2% | 0.512 |
| Little Meadows borough | 243 | −1.2% | 2.418 |
| Union Dale borough | 221 | +0.9% | 2.406 |
| Friendsville borough | 98 | −2% | 1.495 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Susquehanna County. Land: 2026 Census Gazetteer. How communities are listed.
Metropolitan area
Susquehanna County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
31 ZIP Code Tabulation Areas have land in Susquehanna County; 25 of them have most of their land inside the county, and the others mainly cover neighboring areas.
18407184131841918421184301844118446184621846518470186231863018801188121881618818188201882118822188231882418825188261882818829188301883418842188431884418847
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 Susquehanna County
Susquehanna County shares a land border with 6 county equivalents, including 2 in New York. It has more land than 5 of them. The largest neighbor is Bradford County (1,147.4 mi²) and the smallest is Wyoming County (397.3 mi²). Together with its neighbors, Susquehanna County forms a block of 4,777.2 mi² of land, of which it holds 17.2%.
| Bordering county equivalent | Land mi² | Size vs. Susquehanna | Compare |
|---|---|---|---|
| Bradford County | 1,147.4 | 1.4× larger | Compare |
| Wayne County | 725.8 | 1.1× smaller | Compare |
| Broome CountyNew York | 705.7 | 1.2× smaller | Compare |
| Tioga CountyNew York | 518.8 | 1.6× smaller | Compare |
| Lackawanna County | 458.8 | 1.8× smaller | Compare |
| Wyoming County | 397.3 | 2.1× smaller | Compare |
How big is Susquehanna County compared with U.S. states?
Susquehanna County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.3 times as much. Pennsylvania’s county land could hold about 54 areas the size of Susquehanna County.
Another way to picture it: the same land area would fill a square about 28.7 miles (46.2 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 Susquehanna County?
Susquehanna County has more land than 2,195 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 Susquehanna County at #1,114 nationally by total area, 87 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 1%, compared with a national county-equivalent median of 1.2% — 0.1 percentage points lower. 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 Susquehanna County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1026 | Sherman County, Oregon | 823.6 | Compare |
| #1027 | Susquehanna County, Pennsylvania | 823.5 | This county |
| #1028 | Henry County, Illinois | 823.2 | 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 41.819665, -75.800969. 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: 2,132,840,108 m²; AWATER: 22,389,172 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 Susquehanna County?
Susquehanna County, Pennsylvania has 823.5 square miles (2,132.8 km²) of land and 8.645 square miles of water, for a total area of 832.1 square miles. It ranks #1027 of 3,222 U.S. county equivalents by land area.
Is Susquehanna County the largest county in Pennsylvania?
No. Susquehanna County ranks #22 of 67 in Pennsylvania by land area. The largest is Lycoming County, with 1,228.9 square miles of land.
What counties border Susquehanna County?
Susquehanna County shares a land border with Broome County, New York, Wayne County, Bradford County, Wyoming County, Lackawanna County, and Tioga County, New York.
What is the population of Susquehanna County?
The Census Bureau estimates Susquehanna County had 38,237 residents on July 1, 2025, ranking #1,255 of 3,222 county equivalents. That is 46 people per square mile of land.
What is the county seat of Susquehanna County?
The county seat of Susquehanna County is Montrose.
What cities and towns are in Susquehanna County?
Susquehanna County has 40 county subdivisions (cities, towns and townships). The most populous five are Bridgewater township, Clifford township, New Milford township, Forest City borough, and Auburn township.
Is Susquehanna County part of a metropolitan area?
No. Susquehanna County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Susquehanna County?
31 ZIP Code Tabulation Areas have land in Susquehanna County, and 25 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Susquehanna County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.3 times as much land.
How many acres of land are in Susquehanna County?
The land measurement converts to approximately 527,036 acres. Including water, total area is approximately 532,569 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.