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Radon Levels in Allegheny County, Pennsylvania

EPA puts Allegheny County in Zone 1, its highest radon zone, and 30.5% of its 8,337 reported radon tests (2020) were at or above 4 pCi/L. Homes with elevated levels occur in all three zones, so only a test measures yours.

Data checked By Radon411Methodology

How to test this homeFind a certified tester

  • Share at 4+ pCi/L

    30.5%

    0.2 pts above PA

    Allegheny
    30.5%
    PA
    30.3%

    8,337 tests, 2020

  • Median result

    2.5pCi/L

    Below action level

    Allegheny
    2.5 pCi/L
    EPA
    4.0 pCi/L

    Midpoint of the tests, 2020

  • Tests reported

    8,337

    3rd of 63 by tests

    Allegheny
    8,337
    Montgomery
    10,508

    Reported to CDC before any fix, 2020

  • EPA radon zone

    Zone 1

    Highest potential

    1. Zone 1
    2. 2
    3. 3

    1 highest, 3 lowest

    EPA predicts over 4 pCi/L indoors

  • Rank in PA

    49 of 63

    Lowest quarter

    Allegheny
    30.5%
    Perry
    57.7%

    By share, of 63 with 30+ tests

Read a result for Allegheny County

Starts at Allegheny County's median, 2.5 pCi/L

2.5pCi/L

EPA’s own thresholds; the figures are the area’s, never this home’s.

EPA’s reading of 2.5 pCi/L

Between 2 and 4 pCi/L

  1. Under 20 to 1.9 pCi/L
  2. 2 to 4consider a fix
  3. 4 and aboveEPA says fix it

This result is between 2 and 4 pCi/L. EPA recommends considering a fix when the level is between 2 and 4 pCi/L. Allegheny County's median reported result, 2020.

Interpret this readingWhat a fix costs

The data

Allegheny County, At a glance

Allegheny County at a glance

Predicted: EPA radon zone

EPA Zone 1: highest predicted potential

EPA puts all of Allegheny County in and predicts an average indoor of greater than 4 pCi/L (greater than 150 Bq/m³) across the county. That is one forecast for the whole county, not a reading of any address in it; homes above EPA's turn up in all three zones.

USGS geologic potential: High across 100% of the county's area

Predicted: EPA Map of Radon Zones

Measured: tests reported to CDC

Radon tests reported for Allegheny County, 2020

Share of reported tests at or above 4 pCi/L, by year, Allegheny County
Share of reported tests at or above 4 pCi/L, by year, Allegheny County
YearShare of reported tests at or above 4 pCi/L
201436.0%
201533.4%
201633.5%
201731.5%
201826.4%
201930.6%
202030.5%

2020: 30.5%. Across these years the share ran from 26.4% to 36.0%. Each column counts radon tests reported to CDC that year, not homes.

What these figures count

These are the 8,337 tests reported to CDC for Allegheny County over 2020, many from homes being sold or already suspected of a problem: they describe the county's reported tests, not this house.

Measured: CDC tracking data. Figure above: 2020. Measured data period: 2005 to 2020 (every CDC figure on file).

How to read these figures

Allegheny County, Compared

Allegheny County radon figures, compared

Calculated by Radon411

In Allegheny County, about 3 in 10 reported tests in 2020 (2,545 of 8,337) were at or above EPA's action level. Against the national pool of 25.5%, the gap is 5.0 points higher. Across 67 Pennsylvania counties pooled together, 30.3% of tests reached that level, so Allegheny County runs 0.2 points above its state.

Of 5 neighbours with a figure, all 5 reported a larger share at or above 4 pCi/L; the spread is 33.6% (Washington County) to 47.6% (Armstrong County). By share, Allegheny County is 49th of 63 Pennsylvania counties with 30 or more tests for the same period.

Year by year, 2014 opened at 36.0% and 2020 closed at 30.5% (down 5.5 points), with 2014 the high at 36.0%. Half the tests came in under 2.5 pCi/L and half over it; the single highest reached 189.5 pCi/L. Below the action level, 3,300 tests (39.6%) came in under 2 pCi/L, against 44.3% statewide, and 2,492 tests (29.9%) fell between 2 and 4, against 25.4% statewide.

Zone 1 on EPA's map (predicted average above 4 pCi/L) and a 30.5% share point the same way here. USGS geology rates 100% of the county's land high radon potential.

The busiest year on file was 2019, with 10,850 tests reported; the quietest, 2014, had 6,179.

Share of reported tests at or above 4 pCi/L by year, Allegheny County against Pennsylvania2014 to 2020, years with 30 or more tests: Allegheny County 36.0% to 30.5%, the state's pooled share 30.3% in 2020.
Allegheny CountyPennsylvania, pooled
Share of reported tests at or above 4 pCi/L by year, Allegheny County against Pennsylvania: data table
YearTestsAllegheny County, at or above 4 pCi/LPennsylvania, pooled
20146,17936.0%36.1%
20157,34833.4%37.8%
20167,70333.5%34.4%
20176,70531.5%35.1%
20188,33926.4%30.5%
201910,85030.6%31.4%
20208,33730.5%30.3%
Allegheny County against Pennsylvania, the United States and nearby counties, 2020
AreaTestsAt or above 4 pCi/LMedianDifference from Allegheny County
Allegheny County8,33730.5%2.5 pCi/LThis county
Pennsylvania, pooled67 counties, pooled93,66930.3%Not pooled−0.2 points
United States, pooled915 counties, pooled405,35525.5%Not pooled−5.0 points
Perry Countyhighest in the state18957.7%4.9 pCi/L+27.2 points
Philadelphia Countylowest in the state8,44210.6%1.7 pCi/L−19.9 points
Armstrong County, PAborders it18747.6%3.7 pCi/L+17.1 points
Beaver County, PAborders it86842.4%3.2 pCi/L+11.9 points
Butler County, PAborders it1,49242.3%3.3 pCi/L+11.8 points
Westmoreland County, PAborders it1,58834.9%2.6 pCi/L+4.4 points
Washington County, PAborders it1,22733.6%2.8 pCi/L+3.1 points
Where Allegheny County's reported results fell, 2020, beside Pennsylvania and the United States
ResultAllegheny County testsAllegheny County sharePennsylvania shareU.S. shareAgainst Pennsylvania
Under 2 pCi/L3,30039.6%44.3%51.6%−4.7 points
2 to 4 pCi/L2,49229.9%25.4%22.9%+4.5 points
4 pCi/L and above2,54530.5%30.3%25.5%+0.2 points
Allegheny County ranked among the 63 Pennsylvania counties with 30 or more tests, by share at or above 4 pCi/L, 2020
CountyRankTestsAt or above 4 pCi/LMedian
Clarion County44 of 6310731.8%2.9 pCi/L
Mercer County45 of 6331831.4%2.5 pCi/L
Wyoming County46 of 6312330.9%2.0 pCi/L
Pike County47 of 631,15830.7%2.2 pCi/L
Monroe County48 of 631,64930.7%2.1 pCi/L
Allegheny County49 of 638,33730.5%2.5 pCi/L
Wayne County50 of 6360730.1%2.3 pCi/L
Crawford County51 of 6322129.9%2.6 pCi/L
Sullivan County52 of 633129.0%2.0 pCi/L
Luzerne County53 of 6399128.2%2.0 pCi/L
Lackawanna County54 of 6377627.1%2.1 pCi/L
Allegheny County radon tests by year, against Pennsylvania's pooled share
YearTestsAt or above 4 pCi/LMedianHighestPennsylvania, pooledChange from the row before
20208,33730.5%2.5 pCi/L189.5 pCi/L30.3%−0.1 points
201910,85030.6%2.4 pCi/L307.9 pCi/L31.4%+4.2 points
20188,33926.4%2.2 pCi/L190.0 pCi/L30.5%−5.1 points
20176,70531.5%2.6 pCi/L115.8 pCi/L35.1%−2.0 points
20167,70333.5%2.6 pCi/L283.3 pCi/L34.4%+0.1 points
20157,34833.4%2.7 pCi/L304.0 pCi/L37.8%−2.6 points
20146,17936.0%2.8 pCi/L147.6 pCi/L36.1%First on file

Pooled shares: Radon411's sum of CDC's county counts for one period.

Allegheny County, State data

Pennsylvania's own radon test data

Measured

What Pennsylvania's own agencies publish about radon tests in Allegheny County, with their period. These are not CDC's figures and are never added to them.

MeasuredState figures, not CDC's

What Pennsylvania DEP reports for the ZIP codes in Allegheny County

Pennsylvania DEP publishes its figures by ZIP code, not by county. These are the 118 ZIP codes that lie wholly or partly in Allegheny County, each with the state's own figures for it. Period: Period not stated by DEP.

ZIP codes in Allegheny County
ZIP codeWhat the state reports
15003Basement: average 7.9 pCi/L, 1,330 tests; First floor: average 3.7 pCi/L, 48 tests
15005Basement: average 7.3 pCi/L, 1,813 tests; First floor: average 3.6 pCi/L, 79 tests
15006Basement: figures not shown
15007Basement: average 5.1 pCi/L, 59 tests; First floor: figures not shown
15014Basement: average 3.1 pCi/L, 175 tests; First floor: figures not shown
15015Basement: average 9.6 pCi/L, 609 tests; First floor: average 6.5 pCi/L, 48 tests
15017Basement: average 3.8 pCi/L, 3,119 tests; First floor: average 2.0 pCi/L, 231 tests
15018Basement: average 3.7 pCi/L, 45 tests; First floor: figures not shown
15020Basement: figures not shown
15024Basement: average 5.7 pCi/L, 1,430 tests; First floor: average 5.5 pCi/L, 68 tests
15025Basement: average 4.5 pCi/L, 1,154 tests; First floor: average 2.7 pCi/L, 79 tests
15026Basement: average 9.9 pCi/L, 597 tests; First floor: average 6.8 pCi/L, 30 tests
15028Basement: figures not shown
15030Basement: average 4.6 pCi/L, 48 tests; First floor: figures not shown
15031Basement: figures not shown; First floor: figures not shown
15034Basement: average 3.1 pCi/L, 78 tests; First floor: figures not shown
15035Basement: average 3.8 pCi/L, 107 tests; First floor: figures not shown
15037Basement: average 4.3 pCi/L, 1,021 tests; First floor: average 4.3 pCi/L, 56 tests
15044Basement: average 7.9 pCi/L, 9,325 tests; First floor: average 6.2 pCi/L, 669 tests
15045Basement: average 3.2 pCi/L, 223 tests; First floor: figures not shown
15046Basement: average 6.5 pCi/L, 410 tests; First floor: figures not shown
15047Basement: figures not shown
15049Basement: average 2.7 pCi/L, 89 tests; First floor: figures not shown
15051Basement: average 15.3 pCi/L, 68 tests; First floor: figures not shown
15056Basement: average 3.9 pCi/L, 175 tests; First floor: figures not shown
15057Basement: average 5.6 pCi/L, 2,345 tests; First floor: average 4.2 pCi/L, 107 tests
15063Basement: average 4.6 pCi/L, 861 tests; First floor: average 4.4 pCi/L, 40 tests
15064Basement: average 3.8 pCi/L, 49 tests; First floor: figures not shown
15065Basement: average 5.4 pCi/L, 1,142 tests; First floor: average 6.2 pCi/L, 56 tests
15068Basement: average 5.7 pCi/L, 3,496 tests; First floor: average 5.0 pCi/L, 187 tests
15071Basement: average 4.1 pCi/L, 1,371 tests; First floor: average 2.9 pCi/L, 84 tests
15075Basement: figures not shown; First floor: figures not shown
15076Basement: average 4.0 pCi/L, 55 tests; First floor: figures not shown
15082Basement: figures not shown
15083Basement: average 4.7 pCi/L, 50 tests; First floor: figures not shown
15084Basement: average 7.5 pCi/L, 730 tests; First floor: average 4.7 pCi/L, 34 tests
15085Basement: average 4.6 pCi/L, 1,310 tests; First floor: average 3.2 pCi/L, 60 tests
15086Basement: average 6.0 pCi/L, 193 tests; First floor: figures not shown
15088Basement: figures not shown
15089Basement: average 5.9 pCi/L, 372 tests; First floor: average 4.5 pCi/L, 57 tests
15090Basement: average 8.5 pCi/L, 12,098 tests; First floor: average 5.7 pCi/L, 982 tests
15101Basement: average 6.9 pCi/L, 6,748 tests; First floor: average 4.5 pCi/L, 532 tests
15102Basement: average 4.0 pCi/L, 6,724 tests; First floor: average 2.4 pCi/L, 363 tests
15104Basement: average 4.5 pCi/L, 215 tests; First floor: figures not shown
15106Basement: average 4.3 pCi/L, 2,301 tests; First floor: average 2.6 pCi/L, 139 tests
15108Basement: average 6.0 pCi/L, 6,672 tests; First floor: average 4.2 pCi/L, 631 tests
15110Basement: average 4.8 pCi/L, 123 tests; First floor: figures not shown
15112Basement: average 3.4 pCi/L, 150 tests; First floor: figures not shown
15116Basement: average 6.4 pCi/L, 3,415 tests; First floor: average 3.9 pCi/L, 197 tests
15120Basement: average 4.2 pCi/L, 1,750 tests; First floor: average 2.2 pCi/L, 60 tests
15122Basement: average 3.9 pCi/L, 2,409 tests; First floor: average 2.7 pCi/L, 62 tests
15123Basement: figures not shown
15126Basement: average 4.5 pCi/L, 1,411 tests; First floor: average 3.3 pCi/L, 93 tests
15129Basement: average 4.1 pCi/L, 1,661 tests; First floor: average 2.8 pCi/L, 138 tests
15131Basement: average 4.4 pCi/L, 1,075 tests; First floor: figures not shown
15132Basement: average 6.3 pCi/L, 733 tests; First floor: average 3.4 pCi/L, 33 tests
15133Basement: average 4.2 pCi/L, 398 tests; First floor: figures not shown
15135Basement: average 4.8 pCi/L, 407 tests; First floor: figures not shown
15136Basement: average 4.2 pCi/L, 1,545 tests; First floor: average 3.5 pCi/L, 34 tests
15137Basement: average 4.6 pCi/L, 782 tests; First floor: average 1.8 pCi/L, 55 tests
15139Basement: average 3.1 pCi/L, 1,103 tests; First floor: average 1.4 pCi/L, 99 tests
15140Basement: average 4.0 pCi/L, 175 tests; First floor: figures not shown
15142Basement: average 4.0 pCi/L, 430 tests; First floor: figures not shown
15143Basement: average 7.2 pCi/L, 9,156 tests; First floor: average 4.3 pCi/L, 738 tests
15144Basement: average 3.4 pCi/L, 466 tests; First floor: figures not shown
15145Basement: average 4.1 pCi/L, 473 tests; First floor: figures not shown
15146Basement: average 5.5 pCi/L, 5,878 tests; First floor: average 3.7 pCi/L, 290 tests
15147Basement: average 4.7 pCi/L, 1,933 tests; First floor: average 3.3 pCi/L, 83 tests
15148Basement: average 2.9 pCi/L, 80 tests; First floor: figures not shown
15201Basement: average 2.6 pCi/L, 2,222 tests; First floor: average 1.9 pCi/L, 109 tests
15202Basement: average 4.8 pCi/L, 2,681 tests; First floor: average 3.6 pCi/L, 129 tests
15203Basement: average 2.6 pCi/L, 1,534 tests; First floor: average 1.6 pCi/L, 132 tests
15204Basement: average 4.4 pCi/L, 591 tests; First floor: average 2.0 pCi/L, 43 tests
15205Basement: average 3.8 pCi/L, 2,789 tests; First floor: average 2.3 pCi/L, 293 tests
15206Basement: average 3.1 pCi/L, 3,271 tests; First floor: average 1.8 pCi/L, 234 tests
15207Basement: average 3.6 pCi/L, 1,175 tests; First floor: average 3.1 pCi/L, 43 tests
15208Basement: average 3.4 pCi/L, 1,314 tests; First floor: average 1.8 pCi/L, 126 tests
15209Basement: average 5.3 pCi/L, 1,874 tests; First floor: average 5.4 pCi/L, 134 tests
15210Basement: average 4.0 pCi/L, 1,519 tests; First floor: average 2.3 pCi/L, 50 tests
15211Basement: average 3.5 pCi/L, 1,518 tests; First floor: average 2.4 pCi/L, 66 tests
15212Basement: average 3.7 pCi/L, 2,839 tests; First floor: average 2.1 pCi/L, 161 tests
15213Basement: average 3.4 pCi/L, 972 tests; First floor: average 1.8 pCi/L, 158 tests
15214Basement: average 4.8 pCi/L, 1,652 tests; First floor: average 3.3 pCi/L, 77 tests
15215Basement: average 4.2 pCi/L, 3,218 tests; First floor: average 3.0 pCi/L, 241 tests
15216Basement: average 3.0 pCi/L, 3,951 tests; First floor: average 2.0 pCi/L, 258 tests
15217Basement: average 4.2 pCi/L, 6,986 tests; First floor: average 2.4 pCi/L, 689 tests
15218Basement: average 3.6 pCi/L, 3,213 tests; First floor: average 2.5 pCi/L, 174 tests
15219Basement: average 3.8 pCi/L, 378 tests; First floor: average 1.2 pCi/L, 44 tests
15220Basement: average 3.4 pCi/L, 2,975 tests; First floor: average 2.8 pCi/L, 174 tests
15221Basement: average 4.1 pCi/L, 4,261 tests; First floor: average 2.8 pCi/L, 289 tests
15222Basement: average 2.9 pCi/L, 154 tests; First floor: figures not shown
15223Basement: average 4.6 pCi/L, 911 tests; First floor: average 2.4 pCi/L, 41 tests
15224Basement: average 2.0 pCi/L, 896 tests; First floor: average 1.5 pCi/L, 53 tests
15225Basement: average 3.1 pCi/L, 91 tests; First floor: figures not shown
15226Basement: average 3.2 pCi/L, 2,256 tests; First floor: average 1.8 pCi/L, 61 tests
15227Basement: average 3.5 pCi/L, 4,049 tests; First floor: average 1.7 pCi/L, 234 tests
15228Basement: average 3.6 pCi/L, 5,308 tests; First floor: average 2.2 pCi/L, 568 tests
15229Basement: average 6.3 pCi/L, 2,960 tests; First floor: average 4.6 pCi/L, 207 tests
15232Basement: average 2.8 pCi/L, 1,717 tests; First floor: average 1.7 pCi/L, 162 tests
15233Basement: average 2.4 pCi/L, 216 tests; First floor: figures not shown
15234Basement: average 3.4 pCi/L, 2,786 tests; First floor: average 2.1 pCi/L, 195 tests
15235Basement: average 4.7 pCi/L, 5,384 tests; First floor: average 3.6 pCi/L, 272 tests
15236Basement: average 3.7 pCi/L, 4,945 tests; First floor: average 2.6 pCi/L, 329 tests
15237Basement: average 7.4 pCi/L, 15,250 tests; First floor: average 4.6 pCi/L, 1,235 tests
15238Basement: average 7.3 pCi/L, 5,869 tests; First floor: average 4.7 pCi/L, 534 tests
15239Basement: average 4.8 pCi/L, 2,928 tests; First floor: average 4.5 pCi/L, 115 tests
15241Basement: average 4.0 pCi/L, 6,779 tests; First floor: average 3.0 pCi/L, 658 tests
15243Basement: average 3.4 pCi/L, 3,931 tests; First floor: average 2.3 pCi/L, 362 tests
15260Basement: figures not shown; First floor: figures not shown
15275Basement: figures not shown; First floor: figures not shown
15290Basement: figures not shown
15321Basement: average 4.9 pCi/L, 246 tests; First floor: figures not shown
15332Basement: average 4.7 pCi/L, 773 tests; First floor: average 2.9 pCi/L, 34 tests
15642Basement: average 5.1 pCi/L, 4,782 tests; First floor: average 4.1 pCi/L, 170 tests
15668Basement: average 6.8 pCi/L, 4,314 tests; First floor: average 5.0 pCi/L, 215 tests
16046Basement: average 7.0 pCi/L, 4,895 tests; First floor: average 4.6 pCi/L, 365 tests
16055Basement: average 9.8 pCi/L, 1,378 tests; First floor: average 5.0 pCi/L, 72 tests
16059Basement: average 9.6 pCi/L, 1,665 tests; First floor: average 5.0 pCi/L, 162 tests
  • DEP's report gives the number of tests, the highest result and the average result for each floor tested; it states no period.
  • DEP says the smartest thing to do is to test your home for radon, no matter where you live.
  • A ZIP code that crosses the county line is listed whole; its figures cover all of it.

Measured: Pennsylvania DEP data, Period not stated by DEP.

Allegheny County, Geology

The ground under Allegheny County

Predicted

USGS's geologic map puts all of Allegheny County's mapped land in one class: high radon potential. All of it lies in the area the map calls Pennsylvanian Rocks of the Pittsburgh Low Plateau, to which USGS gives a radon index of 14, in the high band (12 to 17).

USGS's geologic areas under Allegheny County
AreaThe rock, in USGS's wordsPotentialRadon indexShare of land
Pennsylvanian Rocks of the Pittsburgh Low PlateauPennsylvanian marine shale, siltstone, sandstone, limestone, and coal.High14100%

Names, descriptions and indexes: U.S. Geological Survey, Geologic Radon Potential Map (2025). Shares: Radon411, from the map cut to the boundary.

Allegheny County beside the ground around it

Allegheny County has more high-potential ground than Pennsylvania as a whole: 100% of its land against 70.4%. Of the 5 counties that border it, none has as large a share of high-potential ground; Armstrong County comes nearest at 100%.

Share of land by USGS radon potential: Allegheny County, the 5 counties bordering it and Pennsylvania
AreaEPA zoneLow potentialModerate potentialHigh potential
Allegheny CountyZone 1NoneNone100%
Washington CountyZone 2None58.8%41.2%
Beaver CountyZone 1None0.5%99.5%
Butler CountyZone 1None2.0%98.0%
Westmoreland CountyZone 1None34.6%65.4%
Armstrong CountyZone 1NoneNone100%
Pennsylvania67 counties, pooled by land areaVaries0.7%28.9%70.4%

The map rates the ground, not the air in any home.

Local help

Allegheny County, Local resources

Radon testing and mitigation in Allegheny County

Listed radon businesses with an address in Allegheny County:

Listed radon professionals by town: Pittsburgh, Bethel Park, Jefferson Hills, Carnegie, Springdale, McDonald

What Pennsylvania's program says
Phone
800-237-2366
Licensing of radon professionals
The Radon Certification Act requires DEP to establish by regulation, a certification program for persons conducting radon gas and radon progeny testing, laboratory analysis and mitigation of radon contamination in buildings.

What it means

Allegheny County, Questions

Questions about radon in Allegheny County

Are radon levels high in Allegheny County?

In 2020, 30.5% of the radon tests reported to CDC for Allegheny County, Pennsylvania were at or above 4 pCi/L, and the median reported pre-mitigation result was 2.5 pCi/L. Of 63 Pennsylvania counties with 30 or more tests for the same period, 48 reported a higher share; pooled, the state comes to 30.3%.

Which counties border Allegheny County?

Allegheny County borders 5 counties: Washington County, Beaver County, Butler County, Westmoreland County and Armstrong County.

Products

Allegheny County, Products

Testing a home in Allegheny County

In Allegheny County, 30.5% of 8,337 tests reported to CDC in 2020 reached 4 pCi/L, against 30.3% pooled across Pennsylvania. In Zone 1 the year-round level in Allegheny County is the one to know: a long-term test (more than 90 days) or a monitor, with a short-term kit for a first answer.

Test kits and monitors3

See every kit and monitor

Allegheny County is in EPA Zone 1, the highest predicted radon potential. Best radon monitors for Zone 1 counties like Allegheny County

Explore

Allegheny County, Bordering counties

Counties bordering Allegheny County

Calculated by Radon411

Allegheny County, Cities and towns

Cities and towns in Allegheny County

About 1,225,035 people live in Allegheny County by the Census Bureau's estimate for July 1, 2025, 24,550 fewer than in 2020 (−2.0%). Packed into its land, that is 1,678 people per square mile. Its largest town, Pittsburgh, has 307,632 residents, 25.1% of the total. CDC's 8,337 reported tests for 2020 work out to 6.8 per 1,000 residents (2025 estimate), close to Pennsylvania's 7.2.

From Pittsburgh to Haysville, CDC publishes no figure by town: each reads Allegheny County's.

The 12 largest cities and towns in Allegheny County by residents, July 1, 2025
PlaceResidentsSince 2020Share of residents
Pittsburgh307,632+1.6%25.1%
Bethel Park32,074−4.4%2.6%
Monroeville27,685−3.4%2.3%
Plum26,225−3.3%2.1%
Baldwin20,516−4.5%1.7%
West Mifflin18,707−4.4%1.5%
McKeesport16,907−4.5%1.4%
Franklin Park14,978−3.3%1.2%
Whitehall14,521−3.4%1.2%
Wilkinsburg13,602−4.7%1.1%
Jefferson Hills12,357−0.6%1.0%
Munhall10,253−4.7%0.8%
  • Brentwood
  • Pleasant Hills
  • Swissvale
  • Castle Shannon
  • Bellevue
  • Dormont
  • Carnegie
  • White Oak
  • Oakmont
  • West View
  • Forest Hills
  • Clairton
  • Crafton
  • McKees Rocks
  • Coraopolis
  • Fox Chapel
  • Duquesne
  • Turtle Creek
  • Green Tree
  • Avalon
  • Bridgeville
  • Glassport
  • Tarentum
  • North Braddock
The other 52 places in Allegheny County
  • Sewickley
  • Port Vue
  • Etna
  • Springdale
  • Ingram
  • Mount Oliver
  • Millvale
  • Trafford (part)
  • Brackenridge
  • Churchill
  • Edgewood
  • Sharpsburg
  • Pitcairn
  • Homestead
  • Aspinwall
  • Verona
  • Emsworth
  • Liberty
  • McDonald (part)
  • Rankin
  • East McKeesport
  • East Pittsburgh
  • Ben Avon
  • West Homestead
  • Wilmerding
  • Braddock Hills
  • Braddock
  • Edgeworth
  • Cheswick
  • Dravosburg
  • Bell Acres
  • Oakdale
  • Versailles
  • Blawnox
  • Elizabeth
  • Heidelberg
  • Bradford Woods
  • Whitaker
  • Leetsdale
  • Lincoln
  • Sewickley Heights
  • Chalfant
  • Sewickley Hills
  • Pennsbury Village
  • Glen Osborne
  • Wall
  • Thornburg
  • Rosslyn Farms
  • West Elizabeth
  • Ben Avon Heights
  • Glenfield
  • Haysville

88 incorporated places, as listed in the U.S. Census Bureau’s 2020 place reference files. “(part)” marks a place that extends into another county. Residents: U.S. Census Bureau population estimates for July 1, 2025 (Vintage 2025).

Allegheny County, Homes

Homes in Allegheny County

Of Allegheny County's 604,558 homes, 62% are detached houses, against 57% across Pennsylvania; 19% are in buildings of five or more homes. The homes are older than Pennsylvania's as a whole: half were built before 1957 (1965 for Pennsylvania), and 55% date from before 1960. 65% of occupied homes are lived in by their owner (Pennsylvania: 69%); in the rest a tenant can run a test, but a fix is the landlord's to make.

Homes in Allegheny County, Pennsylvania, 2019 to 2023
HomesAllegheny CountyPennsylvania
Housing units604,5585,779,663
Detached houses62%57%
In buildings of 5 or more19%13%
Mobile homes1%4%
Built before 196055%45%
Built since 200010%14%
Middle year built19571965
Owner-occupied65%69%

Census Bureau, American Community Survey, 2019 to 2023: estimates from a sample of homes, looser for a small place. Shares by Radon411.