States · Pennsylvania · Allegheny County

Mount Oliver, Pennsylvania.

A borough in Allegheny County. Zillow publishes no home prices for it: see Allegheny County’s.

Living in Mount Oliver, Allegheny County, Pennsylvania

Mount Oliver is a borough of 3,394 people in Allegheny County. Half its households earn more than $52,297 a year and half less, against $78,548 across Allegheny County; 15% of its people live below the poverty line. Unemployment in Allegheny County was 3.8% in August 2026, and the county had 0.1% fewer jobs in 2025 than the year before. The most people in Allegheny County work in schools and health care, then professional services.

People 3,394 in the 2020 census
Household income $52,297 the median, give or take $11,850 · Allegheny County: $78,548
Unemployment 3.8% Allegheny County, August 2026; 4.8% a year before
Homes Too few homes in Mount Oliver for the Census survey to measure.
  • 1,199households
  • 18%of adults have a degree
  • 15%below the poverty line
  • 24 mintypical commute
  • 6%work from home

What people in Allegheny County work in

  • Schools, hospitals and social care29%
  • Professional and business services14%
  • Shops (retail)10%
  • Banks, insurance and property9%
  • Restaurants, hotels and entertainment8%
  • Manufacturing8%

Employed residents by industry, from the Census survey. Allegheny County had 670,169 jobs in 2025, 0.1% fewer than the year before (Bureau of Labor Statistics).

Weather through the year

Average daily high and low for each month: coldest in January, 37° and 22°; warmest in July, 83° and 64° 20° 40° 60° 80° J 37° 22° F M A M J J 83° 64° A S O N D
Average daily high and low for each month: coldest in January, 37° and 22°; warmest in July, 83° and 64° 20° 40° 60° 80° J 37° 22° F M A M J J 83° 64° A S O N D

Coldest in January, with highs near 37° and lows near 22°; warmest in July, with highs near 83° and lows near 64°. About 41 inches of rain and melted snow a year.

Average daily high and low, 1991–2020, at the Pittsburgh Allegheny County Airport weather station, 5 miles away (NOAA).

Largest workplaces in Allegheny County

  1. University of Pittsburgh-Pittsburgh CampusUniversity or college14,731
  2. Upmc - Presbyterian ShadysideGeneral hospital8,829FTE
  3. Carnegie Mellon UniversityUniversity or college6,271
  4. University of Pittsburgh PhysiciansOffices of physicians4,542
  5. University of Pittsburgh Medical CenterDirect health and medical insurance carriers4,222
  6. Pittsburgh SDSchool district4,141FTE
  7. Eaton3,956
  8. University of Pittsburgh Medical CenterOffices of physicians3,812

Staff on average in 2025, as each workplace reported it to OSHA with its injury records: 1,072 workplaces with 20 or more staff, 217,600 people in all across the county; Mount Oliver has one of its own. Colleges come from IPEDS (NCES, 2023–24), hospitals from their Medicare cost reports (CMS, 2023) and school districts from the Common Core of Data (NCES, 2023–24); FTE marks full-time equivalent staff. Not listed: many offices and banks, which need not report to OSHA; military bases, whose staff OPM withholds; and, in about half the states, city and county governments.

Natural hazards

  1. Cold wavesRelatively moderate

FEMA’s National Risk Index (December 2025) rates the risk each natural hazard poses to the people, buildings and farms in Mount Oliver’s census tracts, against the rest of the country; all of them together, very low. It is meant for planning, not a substitute for a local risk assessment or a flood map: FEMA’s index.

From the U.S. Census Bureau’s 2020 census and its American Community Survey (2020–2024 five-year estimates), and the Bureau of Labor Statistics. A survey, so each figure has a margin of error, and figures it is not sure of are left out. More on Allegheny County.