| ZIP Codes: | 85 ZIP Codes (54 Standard, 28 PO Box, 3 Unique) [See All] |
| Area Codes: | 412 / 582 / 724 / 814 / 878 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:33 PM |
| Population: | 351,841 [See All] |
| FIPS: | 42129 |
| CBSA: | Pittsburgh, PA |
| Land Area: | 1,084 sq mi |
| Water Area: | 7 sq mi |
| Coordinates: | 40.2978, -79.5428 |
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351,841 residents live across 85 ZIPs covering 1,084 sq mi, served by 82 distinct USPS-recognized cities.
Population moved from 362,489 to 351,195 from 2014 to 2024 — a -3.1% change. 28 ZIPs gained residents, 49 lost.
The county's wealthiest ZIP 15636 (Harrison City, $145,492 median) and poorest ZIP 15954 (Seward, $43,958) are 35.0 miles apart — a 3.3× income gap across local geography.
Median home values vary 4.5× across this county — from $81,800 in 15954 (Seward) to $368,500 in 15636 (Harrison City).
Density varies 47× across the county — from 43 people/sq mi in 15687 (Stahlstown) to 2,041 in 15062 (Monessen).
Educational attainment ranges from 13.6% bachelor's+ in 15690 (Vandergrift) to 54.7% in 15668 (Murrysville) — the breadth of educational profiles across the area.
Within Pennsylvania, this is the #11 most populous of 67 counties and ranks #30 for median household income .
Hosts 3 single-entity Unique ZIPs: 15605Bureau Of Voc Rehab ; 15606Allegheny Power ; and 15069New Kensington .
Weighted by population, the typical household earns about $76,030 across the county — reflecting what a typical resident sees, not a simple ZIP average.
32.5% of adults age 25+ hold a bachelor's degree or higher (85,270 of 262,429 reporting).
54 Standard delivery, 28 PO Box only, 3 single-entity Unique ZIPs serve this county.
3 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 3.3× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 15601 | Greensburg | Standard | 56,425 | $78,555 | 84.2 | -3.0% |
| 15642 | Irwin | Standard | 46,325 | $97,706 | 46.3 | 2.3% |
| 15068 | New Kensington | Standard | 36,203 | $63,426 | 46.0 | -5.4% |
| 15650 | Latrobe | Standard | 26,312 | $63,305 | 76.1 | -7.5% |
| 15644 | Jeannette | Standard | 18,512 | $64,684 | 22.9 | -5.1% |
| 15666 | Mount Pleasant | Standard | 15,980 | $68,102 | 53.9 | -2.9% |
| 15668 | Murrysville | Standard | 14,584 | $124,494 | 22.2 | 8.4% |
| 15613 | Apollo | Standard | 12,854 | $71,988 | 59.4 | -7.9% |
| 15690 | Vandergrift | Standard | 8,985 | $55,457 | 27.5 | 2.2% |
| 15632 | Export | Standard | 8,377 | $93,664 | 30.9 | -10.4% |
| 15658 | Ligonier | Standard | 8,115 | $82,771 | 91.3 | -8.3% |
| 15085 | Trafford | Standard | 8,062 | $82,456 | 8.4 | 7.1% |
| 15683 | Scottdale | Standard | 7,643 | $51,913 | 17.0 | -4.5% |
| 15089 | West Newton | Standard | 6,789 | $60,533 | 20.1 | 15.1% |
| 15062 | Monessen | Standard | 6,780 | $52,889 | 3.3 | -11.1% |
| 15627 | Derry | Standard | 6,167 | $59,398 | 32.0 | -5.1% |
| 15626 | Delmont | Standard | 5,129 | $61,103 | 4.3 | 1.1% |
| 15610 | Acme | Standard | 3,988 | $72,938 | 38.5 | 9.1% |
| 15670 | New Alexandria | Standard | 3,675 | $79,345 | 39.6 | 9.0% |
| 15636 | Harrison City | Standard | 3,560 | $145,492 | 2.2 | -12.2% |
| 15672 | New Stanton | Standard | 3,321 | $66,840 | 11.0 | -9.5% |
| 15944 | New Florence | Standard | 3,063 | $69,076 | 66.3 | -14.1% |
| 15697 | Youngwood | Standard | 2,877 | $64,961 | 2.1 | -3.5% |
| 15679 | Ruffs Dale | Standard | 2,781 | $77,099 | 23.7 | -22.8% |
| 15618 | Avonmore | Standard | 2,386 | $61,579 | 28.0 | -15.5% |
| 15954 | Seward | Standard | 2,279 | $43,958 | 18.0 | 1.2% |
| 15639 | Hunker | Standard | 2,160 | $79,843 | 11.1 | 0.8% |
| 15479 | Smithton | Standard | 2,010 | $63,852 | 22.5 | -1.3% |
| 15637 | Herminie | Standard | 1,821 | $70,461 | 5.4 | -9.1% |
| 15923 | Bolivar | Standard | 1,585 | $57,167 | 25.9 | -7.1% |
| 15665 | Manor | Standard | 1,339 | $82,375 | 0.8 | -24.1% |
| 15675 | Penn | Standard | 1,290 | $76,406 | 1.1 | 0.9% |
| 15687 | Stahlstown | Standard | 1,241 | $54,798 | 28.7 | 5.7% |
| 15623 | Claridge | Standard | 1,135 | $57,335 | 1.7 | 36.4% |
| 15692 | Westmoreland City | Standard | 992 | $71,574 | 0.4 | 28.5% |
| 15662 | Luxor | PO Box | 969 | $83,715 | 1.5 | 183.3% |
| 15083 | Sutersville | Standard | 913 | $64,750 | 3.5 | 8.3% |
| 15661 | Loyalhanna | Standard | 858 | $80,564 | 0.4 | 71.6% |
| 15620 | Bradenville | Standard | 801 | $59,967 | 0.8 | -26.8% |
| 15698 | Yukon | Standard | 789 | $49,375 | 1.3 | 9.0% |
| 15622 | Champion | Standard | 682 | $46,583 | 34.8 | -50.3% |
| 15633 | Forbes Road | PO Box | 682 | $113,623 | 0.6 | 199.1% |
| 15671 | New Derry | Standard | 671 | $65,556 | 2.3 | -2.0% |
| 15629 | East Vandergrift | PO Box | 631 | $55,278 | 0.1 | -10.5% |
| 15688 | Tarrs | Standard | 612 | $80,938 | 2.1 | -22.1% |
| 15676 | Pleasant Unity | PO Box | 544 | — | 1.2 | 97.1% |
| 15779 | Torrance | PO Box | 526 | $92,250 | 8.5 | 67.5% |
| 15677 | Rector | Standard | 516 | $51,579 | 25.0 | -3.6% |
| 15619 | Bovard | PO Box | 488 | — | 0.6 | — |
| 15678 | Rillton | Standard | 472 | $66,389 | 1.3 | 91.1% |
| 15641 | Hyde Park | Standard | 464 | $65,536 | 0.4 | -4.5% |
| 15628 | Donegal | Standard | 458 | $64,219 | 2.8 | -11.4% |
| 15612 | Alverton | Standard | 443 | $59,018 | 2.2 | 49.7% |
| 15634 | Grapeville | Standard | 421 | $62,000 | 0.1 | -43.0% |
| 15663 | Madison | PO Box | 377 | $76,250 | 0.2 | -15.3% |
| 15616 | Armbrust | PO Box | 363 | $115,648 | 0.0 | 233.0% |
| 15655 | Laughlintown | Standard | 357 | $31,635 | 8.7 | -6.5% |
| 15640 | Hutchinson | PO Box | 355 | $83,000 | 0.4 | -37.3% |
| 15691 | Wendel | PO Box | 302 | $168,289 | 0.0 | 874.2% |
| 15660 | Lowber | PO Box | 299 | — | 0.3 | -24.3% |
| 15693 | Whitney | PO Box | 277 | $49,118 | 0.0 | 52.2% |
| 15617 | Arona | PO Box | 262 | $73,125 | 0.3 | -28.8% |
| 15611 | Adamsburg | Standard | 241 | $64,125 | 0.7 | -57.4% |
| 15680 | Salina | PO Box | 230 | $46,332 | 0.8 | 76.9% |
| 15635 | Hannastown | PO Box | 228 | — | 0.3 | 46.2% |
| 15624 | Crabtree | PO Box | 218 | — | 0.7 | -48.5% |
| 15696 | Youngstown | PO Box | 218 | $65,250 | 0.1 | -34.9% |
| 15684 | Slickville | Standard | 201 | $63,500 | 3.4 | -68.6% |
| 15695 | Wyano | PO Box | 181 | $44,167 | 0.3 | -11.7% |
| 15646 | Jones Mills | Standard | 161 | — | 1.8 | -16.1% |
| 15674 | Norvelt | PO Box | 158 | $86,827 | 0.0 | — |
| 15448 | Jacobs Creek | PO Box | 150 | $47,011 | 1.0 | -14.8% |
| 15615 | Ardara | Standard | 148 | $88,750 | 0.5 | -59.9% |
| 15638 | Hostetter | PO Box | 104 | — | 0.3 | -76.2% |
| 15689 | United | PO Box | 92 | — | 0.0 | -66.5% |
| 15087 | Webster | PO Box | 85 | — | 0.7 | -55.5% |
| 15625 | Darragh | PO Box | 58 | — | 0.5 | -37.6% |
| 15647 | Larimer | Standard | 49 | — | 0.1 | -64.0% |
| 15072 | Pricedale | PO Box | 42 | — | 0.1 | -70.6% |
| 15685 | Southwest | PO Box | — | — | 0.9 | — |
| 15664 | Mammoth | PO Box | — | — | 0.0 | — |
| 15621 | Calumet | PO Box | — | — | 0.2 | — |
| 15605 | Greensburg | Unique | — | — | 0.0 | — |
| 15606 | Greensburg | Unique | — | — | 0.0 | — |
| 15069 | New Kensington | Unique | — | — | 0.0 | — |