Broome County area

Broome County, New York covers 715.3 square miles: 705.7 square miles of land and 9.683 square miles of water. Its county seat is Binghamton. An estimated 195,736 people lived there in 2025.

Official Census measurements · GEOID 360072026 Gazetteer · retrieved September 27, 2026
Land area705.7 mi²
Water area9.683 mi²
Population (2025)195,736
People per mi²277

County outline

Generalized outline of Broome County, New York
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Broome County is located

Broome County highlighted on a map of all U.S. county equivalents. About the maps

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

MeasurementSquare milesSquare kilometersAcres
Land705.6511,827.628451,616.6
Water9.68325.0796,197.1
Total715.3341,852.707457,813.8

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.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate198,145198,548197,171195,934195,893195,736
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 subdivisionPopulation 2025Since 2020Land mi²Share of county land
Union town53,972−3.9%35.45%
Binghamton cityCounty seat46,418−3.1%10.51.5%
Vestal town32,055+9.4%51.77.3%
Chenango town10,594−3.6%33.84.8%
Fenton town6,206−3.4%32.84.6%
Windsor town5,648−2.6%91.813%
Kirkwood town5,274−3.9%30.74.4%
Dickinson town5,027−1.5%4.7650.7%
Maine town5,001−3.4%45.56.5%
Conklin town4,823−3.7%24.53.5%
Colesville town4,730−2.9%78.411.1%
Binghamton townCounty seat4,435−3.8%25.33.6%
Triangle town2,727−3%37.95.4%
Lisle town2,642−1.9%46.96.6%
Barker town2,458−2.2%41.45.9%
Show the other 2 subdivisions
NamePopulation 2025Since 2020Land mi²
Sanford town2,162−3.3%90.1
Nanticoke town1,564−0.8%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 equivalentPopulation 2025Land mi²
Broome County195,736705.7
Tioga County47,453518.8

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%.

Map of Broome County and the 6 county equivalents that border it Chenango County, New York: 893.4 mi² landSusquehanna County, Pennsylvania: 823.5 mi² landTioga County, New York: 518.8 mi² landDelaware County, New York: 1,442.6 mi² landCortland County, New York: 498.8 mi² landWayne County, Pennsylvania: 725.8 mi² land
Broome County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. BroomeCompare
Delaware County1,442.62× largerCompare
Chenango County893.41.3× largerCompare
Susquehanna CountyPennsylvania823.51.2× largerCompare
Wayne CountyPennsylvania725.8about the sameCompare
Tioga County518.81.4× smallerCompare
Cortland County498.81.4× smallerCompare

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.

Land area: Broome County and the closest-sized states
Broome County705.7 mi²
Rhode Island1,033.9 mi²

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.

Land area compared with the typical county equivalent
Broome County705.7 mi²
New York median653.7 mi²
National median604.5 mi²

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 rankCounty equivalentLand mi²Comparison
#1309Washtenaw County, Michigan706Compare
#1310Broome County, New York705.7This county
#1311Osage County, Kansas705.5Compare

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.

Download the official county source ZIP ↗ · Methodology

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.

Cite this county

Download the complete CSV or JSON dataset