County outline
Where Broome County is located
Area breakdown
Land accounts for 98.6% of Broome County’s measured area and water for 1.4%. Its combined area converts to 1,852.7 square kilometers or approximately 457,814 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 705.651 | 1,827.628 | 451,616.6 |
| Water | 9.683 | 25.079 | 6,197.1 |
| Total | 715.334 | 1,852.707 | 457,813.8 |
How Broome County compares
By original Census land area, Broome County ranks #28 of 62 in New York and #1310 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.08 times the New York county-equivalent median of 653.7 square miles. It accounts for 1.5% of the combined county land area in the state.
See the complete New York ranking · What counts as a county equivalent?
Population and density of Broome County
The Census Bureau estimates that 195,736 people lived in Broome County on July 1, 2025. That ranks #366 of 3,222 county equivalents nationally and #19 of 62 in New York. Since the April 1, 2020 estimates base of 198,675, the population has declined by 2,939 (−1.5%), compared with −1% for New York as a whole.
With 705.7 square miles of land, that is 277 people per square mile (107 per km²), placing Broome County #538 nationally for density and #20 in New York. The median county equivalent has 47 people per square mile; the New York median is 112. Put another way, there are about 2.3 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 198,145 | 198,548 | 197,171 | 195,934 | 195,893 | 195,736 |
| Change | — | +403 | −1,377 | −1,237 | −41 | −157 |
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 Broome County
Broome County is divided into 17 cities and towns. In New York, county subdivisions are local governments, and together they cover all of the county’s land and residents.
The most populous is Union town, with 53,972 residents (27.6% of the county). The largest by land is Windsor town, at 91.8 mi², or 13% of the county’s land. The county seat, Binghamton city, has 46,418 residents. Among those with at least 1,000 residents in 2020, Vestal town grew fastest since then (+9.4%).
| County subdivision | Population 2025 | Since 2020 | Land mi² | Share of county land |
|---|---|---|---|---|
| Union town | 53,972 | −3.9% | 35.4 | 5% |
| Binghamton cityCounty seat | 46,418 | −3.1% | 10.5 | 1.5% |
| Vestal town | 32,055 | +9.4% | 51.7 | 7.3% |
| Chenango town | 10,594 | −3.6% | 33.8 | 4.8% |
| Fenton town | 6,206 | −3.4% | 32.8 | 4.6% |
| Windsor town | 5,648 | −2.6% | 91.8 | 13% |
| Kirkwood town | 5,274 | −3.9% | 30.7 | 4.4% |
| Dickinson town | 5,027 | −1.5% | 4.765 | 0.7% |
| Maine town | 5,001 | −3.4% | 45.5 | 6.5% |
| Conklin town | 4,823 | −3.7% | 24.5 | 3.5% |
| Colesville town | 4,730 | −2.9% | 78.4 | 11.1% |
| Binghamton townCounty seat | 4,435 | −3.8% | 25.3 | 3.6% |
| Triangle town | 2,727 | −3% | 37.9 | 5.4% |
| Lisle town | 2,642 | −1.9% | 46.9 | 6.6% |
| Barker town | 2,458 | −2.2% | 41.4 | 5.9% |
Show the other 2 subdivisions
| Name | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Sanford town | 2,162 | −3.3% | 90.1 |
| Nanticoke town | 1,564 | −0.8% | 24.3 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Broome County. Land: 2026 Census Gazetteer. How communities are listed.
Metropolitan area
Broome County is a central county of the Binghamton, NY Metropolitan Statistical Area. Its 2 county equivalents have 243,189 residents on 1,224.4 square miles of land; Broome County accounts for 57.6% of the land and 80.5% of the residents. By combined land it ranks #257 of 393 metropolitan areas, and #202 by population.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Broome County | 195,736 | 705.7 |
| Tioga County | 47,453 | 518.8 |
ZIP codes
31 ZIP Code Tabulation Areas have land in Broome County; 22 of them have most of their land inside the county, and the others mainly cover neighboring areas.
13730137361374413746137481375413760137771377813783137871379013795137971380213803138111381313826138331383513841138501386213863138651390113902139031390413905
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 Broome County
Broome County shares a land border with 6 county equivalents, including 2 in Pennsylvania. It has more land than 2 of them. The largest neighbor is Delaware County (1,442.6 mi²) and the smallest is Cortland County (498.8 mi²). Together with its neighbors, Broome County forms a block of 5,608.5 mi² of land, of which it holds 12.6%.
| Bordering county equivalent | Land mi² | Size vs. Broome | Compare |
|---|---|---|---|
| Delaware County | 1,442.6 | 2× larger | Compare |
| Chenango County | 893.4 | 1.3× larger | Compare |
| Susquehanna CountyPennsylvania | 823.5 | 1.2× larger | Compare |
| Wayne CountyPennsylvania | 725.8 | about the same | Compare |
| Tioga County | 518.8 | 1.4× smaller | Compare |
| Cortland County | 498.8 | 1.4× smaller | Compare |
How big is Broome County compared with U.S. states?
Broome County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.5 times as much. New York’s county land could hold about 67 areas the size of Broome County.
Another way to picture it: the same land area would fill a square about 26.6 miles (42.8 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 Broome County?
Broome County has more land than 1,912 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 Broome County at #1,397 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 1.4%, compared with a national county-equivalent median of 1.2% — 0.2 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 Broome County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1309 | Washtenaw County, Michigan | 706 | Compare |
| #1310 | Broome County, New York | 705.7 | This county |
| #1311 | Osage County, Kansas | 705.5 | 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 42.161977, -75.830283. 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: 1,827,626,584 m²; AWATER: 25,078,248 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 Broome County?
Broome County, New York has 705.7 square miles (1,827.6 km²) of land and 9.683 square miles of water, for a total area of 715.3 square miles. It ranks #1310 of 3,222 U.S. county equivalents by land area.
Is Broome County the largest county in New York?
No. Broome County ranks #28 of 62 in New York by land area. The largest is St. Lawrence County, with 2,679.5 square miles of land.
What counties border Broome County?
Broome County shares a land border with Chenango County, Susquehanna County, Pennsylvania, Tioga County, Delaware County, Cortland County, and Wayne County, Pennsylvania.
What is the population of Broome County?
The Census Bureau estimates Broome County had 195,736 residents on July 1, 2025, ranking #366 of 3,222 county equivalents. That is 277 people per square mile of land.
What is the county seat of Broome County?
The county seat of Broome County is Binghamton.
What cities and towns are in Broome County?
Broome County has 17 county subdivisions (cities, towns and townships). The most populous five are Union town, Binghamton city, Vestal town, Chenango town, and Fenton town.
Is Broome County part of a metropolitan area?
Yes. It is a central county of the Binghamton, NY Metropolitan Statistical Area, which has 2 county equivalents and 243,189 residents.
How many ZIP codes are in Broome County?
31 ZIP Code Tabulation Areas have land in Broome County, and 22 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Broome County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.5 times as much land.
How many acres of land are in Broome County?
The land measurement converts to approximately 451,617 acres. Including water, total area is approximately 457,814 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.