| ZIP Codes: | 14 ZIP Codes (11 Standard, 3 PO Box, 0 Unique) [See All] |
| Area Codes: | 582 / 814 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:31 PM |
| Population: | 30,328 [See All] |
| FIPS: | 42047 |
| CBSA: | St. Marys, PA |
| Land Area: | 663 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 41.4156, -78.6192 |
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30,328 residents live across 14 ZIPs covering 663 sq mi, served by 14 distinct USPS-recognized cities.
Population moved from 31,552 to 30,270 from 2014 to 2024 — a -4.1% change. 3 ZIPs gained residents, 8 lost.
The county's wealthiest ZIP 15827 (Byrnedale, $83,125 median) and poorest ZIP 15841 (Force, $31,071) are 2.7 miles apart — a 2.7× income gap across local geography.
Median home values vary 3.0× across this county — from $54,500 in 15841 (Force) to $165,700 in 15846 (Kersey).
Density varies 111× across the county — from 10 people/sq mi in 15868 (Weedville) to 1,060 in 15841 (Force).
Educational attainment ranges from 15.9% bachelor's+ in 15868 (Weedville) to 26.9% in 15846 (Kersey) — the breadth of educational profiles across the area.
Within Pennsylvania, this is the #59 most populous of 67 counties and ranks #59 for median household income .
Weighted by population, the typical household earns about $65,440 across the county — reflecting what a typical resident sees, not a simple ZIP average.
20.8% of adults age 25+ hold a bachelor's degree or higher (4,692 of 22,518 reporting).
11 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.
A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 15857 | Saint Marys | Standard | 12,736 | $67,662 | 95.8 | -2.4% |
| 15853 | Ridgway | Standard | 6,420 | $59,344 | 157.5 | 2.4% |
| 15846 | Kersey | Standard | 3,408 | $70,662 | 56.5 | -9.1% |
| 15845 | Johnsonburg | Standard | 3,121 | $68,347 | 37.7 | 0.4% |
| 15868 | Weedville | Standard | 1,435 | $70,395 | 150.8 | 1.8% |
| 15823 | Brockport | Standard | 1,266 | $51,125 | 32.8 | -16.8% |
| 15870 | Wilcox | Standard | 1,109 | $63,750 | 105.6 | -13.6% |
| 15827 | Byrnedale | Standard | 301 | $83,125 | 0.3 | -7.1% |
| 15841 | Force | PO Box | 226 | $31,071 | 0.2 | -43.2% |
| 16734 | James City | PO Box | 174 | $65,789 | 1.3 | -34.1% |
| 15821 | Benezett | Standard | 74 | $55,313 | 24.0 | -56.5% |
| 15831 | Dagus Mines | PO Box | 58 | — | 0.1 | — |
| 15822 | Brandy Camp | Standard | — | — | 0.0 | — |
| 16728 | De Young | Standard | — | — | 0.0 | — |