Montour County area

Population and density of Montour County

The Census Bureau estimates that 17,868 people lived in Montour County on July 1, 2025. That ranks #2,006 of 3,222 county equivalents nationally and #62 of 67 in Pennsylvania. Since the April 1, 2020 estimates base of 18,144, the population has declined by 276 (−1.5%), compared with +0.4% for Pennsylvania as a whole.

With 130.3 square miles of land, that is 137 people per square mile (53 per km²), placing Montour County #817 nationally for density and #34 in Pennsylvania. The median county equivalent has 47 people per square mile; the Pennsylvania median is 137. Put another way, there are about 4.7 acres of land per resident.

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 Montour County

Montour County is divided into 11 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 Mahoning township, with 4,469 residents (25% of the county). The largest by land is Liberty township, at 27 mi², or 20.7% of the county’s land. The county seat, Danville borough, has 4,101 residents. Among those with at least 1,000 residents in 2020, Anthony township grew fastest since then (+1.5%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Montour County. Land: 2026 Census Gazetteer. How communities are listed.

Metropolitan area

Montour County is an outlying county of the Sunbury, PA Micropolitan Statistical Area. Its 2 county equivalents have 107,788 residents on 588 square miles of land; Montour County accounts for 22.2% of the land and 16.6% of the residents. By combined land it ranks #364 of 542 micropolitan areas, and #25 by population. It belongs to the Bloomsburg-Berwick-Sunbury, PA Combined Statistical Area.

ZIP codes

10 ZIP Code Tabulation Areas have land in Montour County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.

17756177721777717815178201782117822178241784717884

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 Montour County

Montour County shares a land border with 3 county equivalents. Each of them has more land than Montour County. The largest neighbor is Lycoming County (1,228.9 mi²) and the smallest is Northumberland County (457.7 mi²). Together with its neighbors, Montour County forms a block of 2,300.2 mi² of land, of which it holds 5.7%.

How big is Montour County compared with U.S. states?

Montour County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 7.9 times as much. Pennsylvania’s county land could hold about 343 areas the size of Montour County.

Another way to picture it: the same land area would fill a square about 11.4 miles (18.4 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 Montour County?

Montour County has more land than 151 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 Montour County at #3,091 nationally by total area, 20 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 1.5%, compared with a national county-equivalent median of 1.2% — 0.3 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 Montour County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

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.