Plum, Pennsylvania

Plum population, 2020 to 2024

Plum lost 720 residents from July 2020 to July 2024, a change of -2.7%. In the latest year it moved by -75. Among 193 Pennsylvania places of 5,000 or more, that growth ranks 158th; the median place changed by +0.2%. The median place of 5,000+ in Pennsylvania has 8,364 people, so Plum is 3.2 times that size.

Plum covers 28.57 square miles of land and 0.37 of water, for 925 people per square mile of land. The median Pennsylvania place of 5,000+ has 3,911, so Plum is less dense than the typical town.

What county Plum is in

All of Plum's residents live in Allegheny County, which had 1,231,814 residents in 2024. Plum holds 2.1% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Plum

4 ZIP Code Tabulation Areas (ZCTAs) overlap Plum by at least 10% of the ZCTA's or the borough's land: 15068, 15139, 15147, 15239. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a borough that annexed land after 2020 may reach into ZIP codes not listed here.

Where Plum is

The Census internal point of Plum is at 40.501900, -79.748200. Harrisburg, the capital, is 151.6 miles E in a straight line. The nearest larger place is Monroeville, PA (27,966 people), 5.3 miles away. The nearest city of 100,000 or more is Pittsburgh, PA, 12.7 miles away.

Daylight in Plum

At 40.50° N, Plum gets about 15 h 04 min of daylight around the June solstice and 9 h 17 min around the December solstice, a swing of 5 h 48 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Plum

The eight nearest incorporated places of 1,000+ in Pennsylvania, measured between internal points. The closest is Springdale, 3.2 miles away, with 3,272 people.