| ZIP Codes: | 36 ZIP Codes (24 Standard, 9 PO Box, 3 Unique) [See All] |
| Area Codes: | 412 / 582 / 724 / 814 / 878 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:30 PM |
| Population: | 203,113 [See All] |
| FIPS: | 42019 |
| CBSA: | Pittsburgh, PA |
| Land Area: | 831 sq mi |
| Water Area: | 7 sq mi |
| Coordinates: | 40.9198, -79.9086 |
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203,113 residents live across 36 ZIPs covering 831 sq mi, served by 31 distinct USPS-recognized cities.
Population moved from 189,280 to 203,113 from 2014 to 2024 — a +7.3% change. 13 ZIPs gained residents, 18 lost.
The county's wealthiest ZIP 16046 (Mars, $151,560 median) and poorest ZIP 16050 (Petrolia, $56,708) are 26.7 miles apart — a 2.7× income gap across local geography.
Median home values vary 3.6× across this county — from $132,400 in 16045 (Lyndora) to $481,300 in 16046 (Mars).
Density varies 58× across the county — from 41 people/sq mi in 16020 (Boyers) to 2,394 in 16045 (Lyndora).
Educational attainment ranges from 13.5% bachelor's+ in 16041 (Karns City) to 69.9% in 16046 (Mars) — the breadth of educational profiles across the area.
Within Pennsylvania, this is the #19 most populous of 67 counties and ranks #15 for median household income with the #4 fastest decade growth .
Hosts 3 single-entity Unique ZIPs: 16016Social Security Admin ; 16018Natl Agency For Check Inqu ; and 16017Office Of Personnel Mgmt .
Weighted by population, the typical household earns about $93,786 across the county — reflecting what a typical resident sees, not a simple ZIP average.
39.6% of adults age 25+ hold a bachelor's degree or higher (57,688 of 145,785 reporting).
24 Standard delivery, 9 PO Box only, 3 single-entity Unique ZIPs serve this county.
2 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
3 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 16001 | Butler | Standard | 39,234 | $63,635 | 77.6 | -0.8% |
| 16066 | Cranberry Township | Standard | 33,873 | $124,189 | 22.1 | 16.9% |
| 16046 | Mars | Standard | 19,757 | $151,560 | 22.7 | 29.5% |
| 16057 | Slippery Rock | Standard | 15,718 | $58,288 | 89.9 | 12.0% |
| 16002 | Butler | Standard | 15,587 | $90,305 | 73.9 | -1.0% |
| 16059 | Valencia | Standard | 10,062 | $110,828 | 26.3 | 28.6% |
| 16055 | Sarver | Standard | 8,993 | $90,950 | 39.1 | 8.2% |
| 16063 | Zelienople | Standard | 8,256 | $95,893 | 14.2 | 23.4% |
| 16033 | Evans City | Standard | 8,185 | $108,071 | 30.8 | 45.6% |
| 16037 | Harmony | Standard | 5,291 | $93,077 | 33.9 | 14.1% |
| 16025 | Chicora | Standard | 4,793 | $71,722 | 55.6 | -16.1% |
| 16056 | Saxonburg | Standard | 4,232 | $75,893 | 20.8 | -11.5% |
| 16023 | Cabot | Standard | 4,082 | $86,042 | 26.3 | -6.0% |
| 16053 | Renfrew | Standard | 3,429 | $76,054 | 21.4 | -21.9% |
| 16038 | Harrisville | Standard | 3,292 | $72,850 | 46.3 | -18.0% |
| 16051 | Portersville | Standard | 3,119 | $88,958 | 43.8 | -0.7% |
| 16061 | West Sunbury | Standard | 2,564 | $74,464 | 42.3 | -3.9% |
| 16052 | Prospect | Standard | 2,215 | $81,739 | 18.8 | -6.0% |
| 16034 | Fenelton | Standard | 1,752 | $88,300 | 17.8 | -11.1% |
| 16041 | Karns City | Standard | 1,747 | $67,167 | 29.7 | -13.6% |
| 16020 | Boyers | Standard | 1,169 | $74,135 | 28.4 | -2.6% |
| 16045 | Lyndora | Standard | 1,136 | $72,600 | 0.5 | -14.9% |
| 16050 | Petrolia | Standard | 1,097 | $56,708 | 22.2 | -32.5% |
| 16040 | Hilliards | Standard | 1,013 | $84,792 | 19.9 | 17.7% |
| 16029 | East Butler | PO Box | 916 | $61,607 | 0.6 | 32.0% |
| 16027 | Connoquenessing | PO Box | 423 | $84,531 | 0.6 | 35.1% |
| 16030 | Eau Claire | PO Box | 272 | $61,719 | 1.1 | -20.2% |
| 16035 | Forestville | PO Box | 252 | $53,750 | 0.4 | 287.7% |
| 16048 | North Washington | PO Box | 225 | $71,250 | 0.8 | 39.8% |
| 16022 | Bruin | PO Box | 219 | $76,250 | 2.4 | -45.5% |
| 16024 | Callery | PO Box | 210 | $72,500 | 0.5 | -7.5% |
| 16039 | Herman | PO Box | — | — | 0.0 | — |
| 16003 | Butler | PO Box | — | — | 0.0 | — |
| 16016 | Boyers | Unique | — | — | 0.0 | — |
| 16018 | Boyers | Unique | — | — | 0.0 | — |
| 16017 | Boyers | Unique | — | — | 0.0 | — |