County outline
Where Bucks County is located
Area breakdown
Land accounts for 97.2% of Bucks County’s measured area and water for 2.8%. Its combined area converts to 1,610.8 square kilometers or approximately 398,038 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 604.443 | 1,565.5 | 386,843.5 |
| Water | 17.491 | 45.301 | 11,194.2 |
| Total | 621.934 | 1,610.802 | 398,037.8 |
How Bucks County compares
By original Census land area, Bucks County ranks #37 of 67 in Pennsylvania and #1612 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.925 times the Pennsylvania county-equivalent median of 653.3 square miles. It accounts for 1.4% of the combined county land area in the state.
See the complete Pennsylvania ranking · What counts as a county equivalent?
Population and density of Bucks County
The Census Bureau estimates that 647,828 people lived in Bucks County on July 1, 2025. That ranks #111 of 3,222 county equivalents nationally and #4 of 67 in Pennsylvania. Since the April 1, 2020 estimates base of 646,552, the population has grown by 1,276 (+0.2%), compared with +0.4% for Pennsylvania as a whole.
With 604.4 square miles of land, that is 1,072 people per square mile (414 per km²), placing Bucks County #178 nationally for density and #6 in Pennsylvania. The median county equivalent has 47 people per square mile; the Pennsylvania median is 137. Put another way, there are about 0.597 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 646,212 | 647,792 | 646,351 | 647,751 | 648,416 | 647,828 |
| Change | — | +1,580 | −1,441 | +1,400 | +665 | −588 |
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 Bucks County
Bucks County is divided into 54 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 Bensalem township, with 62,783 residents (9.7% of the county). The largest by land is Buckingham township, at 32.9 mi², or 5.4% of the county’s land. The county seat, Doylestown township, has 18,137 residents. Among those with at least 1,000 residents in 2020, Dublin borough grew fastest since then (+11.9%).
| County subdivision | Population 2025 | Since 2020 | Land mi² | Share of county land |
|---|---|---|---|---|
| Bensalem township | 62,783 | +0.1% | 19.9 | 3.3% |
| Bristol township | 54,063 | −0.5% | 15.8 | 2.6% |
| Middletown township | 45,547 | −1.1% | 18.9 | 3.1% |
| Northampton township | 39,919 | +0.1% | 25.7 | 4.2% |
| Falls township | 34,282 | −1.3% | 21.3 | 3.5% |
| Lower Makefield township | 34,028 | +2.6% | 17.9 | 3% |
| Warminster township | 33,254 | −1% | 10.2 | 1.7% |
| Warrington township | 26,261 | +2.4% | 13.7 | 2.3% |
| Buckingham township | 20,757 | −0.5% | 32.9 | 5.4% |
| Lower Southampton township | 20,414 | −0.9% | 6.676 | 1.1% |
| Newtown township | 19,806 | −0.4% | 11.9 | 2% |
| Doylestown townshipCounty seat | 18,137 | +0.9% | 15.4 | 2.6% |
| Hilltown township | 16,884 | +3.6% | 27 | 4.5% |
| Upper Southampton township | 15,067 | −1.5% | 6.62 | 1.1% |
| Warwick township | 14,843 | −0.1% | 11 | 1.8% |
Show the other 39 subdivisions
| Name | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Plumstead township | 14,357 | +2.4% | 27.2 |
| Richland township | 14,311 | +3.4% | 20.7 |
| New Britain township | 12,377 | +0.4% | 14.7 |
| Milford township | 10,233 | −0.1% | 27.9 |
| Bristol borough | 9,970 | +1.1% | 1.698 |
| Morrisville borough | 9,665 | −1.5% | 1.747 |
| Perkasie borough | 9,312 | +2.2% | 2.535 |
| Quakertown borough | 9,235 | −1.5% | 2.035 |
| Upper Makefield township | 8,848 | −0.1% | 21.3 |
| Solebury township | 8,642 | −0.8% | 26.6 |
| Doylestown boroughCounty seat | 8,330 | +0.3% | 2.157 |
| Bedminster township | 7,501 | −0.5% | 30.5 |
| East Rockhill township | 5,908 | +1.5% | 12.9 |
| West Rockhill township | 5,455 | +0.2% | 16.3 |
| Springfield township | 5,246 | +1.3% | 30.6 |
| Sellersville borough | 4,501 | −1.6% | 1.144 |
| Chalfont borough | 4,419 | +3.8% | 1.618 |
| Tinicum township | 3,810 | −0.3% | 30.1 |
| Nockamixon township | 3,370 | −0.3% | 22 |
| Wrightstown township | 3,278 | +0.1% | 9.702 |
| New Britain borough | 2,799 | −1.1% | 1.207 |
| New Hope borough | 2,629 | +0.5% | 1.27 |
| Yardley borough | 2,577 | −1.3% | 0.934 |
| Penndel borough | 2,507 | −0.3% | 0.418 |
| Dublin borough | 2,436 | +11.9% | 0.583 |
| Newtown borough | 2,257 | −0.3% | 0.554 |
| Tullytown borough | 2,228 | −1.6% | 1.525 |
| Telford borough | 2,209 | +0.5% | 0.529 |
| Haycock township | 2,201 | 0% | 19.7 |
| Langhorne borough | 1,620 | −1.4% | 0.492 |
| Langhorne Manor borough | 1,467 | −0.9% | 0.598 |
| Richlandtown borough | 1,335 | −1.3% | 0.26 |
| Bridgeton township | 1,228 | −0.3% | 6.583 |
| Durham township | 1,086 | −0.5% | 9.188 |
| Hulmeville borough | 982 | 0% | 0.379 |
| Ivyland borough | 943 | −1.6% | 0.355 |
| Trumbauersville borough | 881 | −1% | 0.445 |
| Riegelsville borough | 837 | −1.3% | 1.007 |
| Silverdale borough | 793 | −1.6% | 0.413 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Bucks County. Land: 2026 Census Gazetteer. How communities are listed.
Metropolitan area
Bucks County is a central county of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area, in the Montgomery County-Bucks County-Chester County, PA metropolitan division. Its 11 county equivalents have 6,329,118 residents on 4,603.2 square miles of land; Bucks County accounts for 13.1% of the land and 10.2% of the residents. By combined land it ranks #58 of 393 metropolitan areas, and #9 by population. It belongs to the Philadelphia-Reading-Camden, PA-NJ-DE-MD Combined Statistical Area.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Philadelphia County | 1,574,281 | 134.3 |
| Montgomery County | 877,643 | 482.9 |
| Bucks County | 647,828 | 604.4 |
| New Castle CountyDelaware | 588,026 | 426.3 |
| Delaware County | 580,937 | 183.8 |
| Chester County | 557,116 | 750.6 |
| Camden CountyNew Jersey | 535,799 | 221.4 |
| Burlington CountyNew Jersey | 481,439 | 799.3 |
| Gloucester CountyNew Jersey | 312,638 | 322 |
| Cecil CountyMaryland | 107,131 | 346.3 |
| Salem CountyNew Jersey | 66,280 | 331.9 |
ZIP codes
60 ZIP Code Tabulation Areas have land in Bucks County; 48 of them have most of their land inside the county, and the others mainly cover neighboring areas.
180361804118042180541805518073180771808118901189021891218913189141891718920189211892318925189271892918930189321893318935189381894018942189441894618947189501895118954189551896018962189641896618969189701897218974189761897718980190061900719020190211903019040190471905319054190551905619057190671944019454
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 Bucks County
Bucks County shares a land border with 8 county equivalents, including 4 in New Jersey. It has more land than 7 of them. The largest neighbor is Burlington County (799.3 mi²) and the smallest is Philadelphia County (134.3 mi²). Together with its neighbors, Bucks County forms a block of 3,745 mi² of land, of which it holds 16.1%.
| Bordering county equivalent | Land mi² | Size vs. Bucks | Compare |
|---|---|---|---|
| Burlington CountyNew Jersey | 799.3 | 1.3× larger | Compare |
| Montgomery County | 482.9 | 1.3× smaller | Compare |
| Hunterdon CountyNew Jersey | 427.8 | 1.4× smaller | Compare |
| Northampton County | 369.8 | 1.6× smaller | Compare |
| Warren CountyNew Jersey | 356.5 | 1.7× smaller | Compare |
| Lehigh County | 345.3 | 1.8× smaller | Compare |
| Mercer CountyNew Jersey | 224.5 | 2.7× smaller | Compare |
| Philadelphia County | 134.3 | 4.5× smaller | Compare |
How big is Bucks County compared with U.S. states?
Bucks County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.7 times as much. Pennsylvania’s county land could hold about 74 areas the size of Bucks County.
Another way to picture it: the same land area would fill a square about 24.6 miles (39.6 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 Bucks County?
Bucks County has more land than 1,610 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 Bucks County at #1,666 nationally by total area, 54 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 2.8%, compared with a national county-equivalent median of 1.2% — 1.6 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 Bucks County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1611 | Clay County, Florida | 604.6 | Compare |
| #1612 | Bucks County, Pennsylvania | 604.4 | This county |
| #1613 | Washington County, Texas | 604.2 | 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 40.336887, -75.107060. 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: 1,565,500,733 m²; AWATER: 45,302,178 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 Bucks County?
Bucks County, Pennsylvania has 604.4 square miles (1,565.5 km²) of land and 17.5 square miles of water, for a total area of 621.9 square miles. It ranks #1612 of 3,222 U.S. county equivalents by land area.
Is Bucks County the largest county in Pennsylvania?
No. Bucks County ranks #37 of 67 in Pennsylvania by land area. The largest is Lycoming County, with 1,228.9 square miles of land.
What counties border Bucks County?
Bucks County shares a land border with Montgomery County, Hunterdon County, New Jersey, Mercer County, New Jersey, Burlington County, New Jersey, Lehigh County, Northampton County, Philadelphia County, and Warren County, New Jersey.
What is the population of Bucks County?
The Census Bureau estimates Bucks County had 647,828 residents on July 1, 2025, ranking #111 of 3,222 county equivalents. That is 1,072 people per square mile of land.
What is the county seat of Bucks County?
The county seat of Bucks County is Doylestown.
What cities and towns are in Bucks County?
Bucks County has 54 county subdivisions (cities, towns and townships). The most populous five are Bensalem township, Bristol township, Middletown township, Northampton township, and Falls township.
Is Bucks County part of a metropolitan area?
Yes. It is a central county of the Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metropolitan Statistical Area, which has 11 county equivalents and 6,329,118 residents.
How many ZIP codes are in Bucks County?
60 ZIP Code Tabulation Areas have land in Bucks County, and 48 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Bucks County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.7 times as much land.
How many acres of land are in Bucks County?
The land measurement converts to approximately 386,844 acres. Including water, total area is approximately 398,038 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.