| ZIP Codes: | 33 ZIP Codes (24 Standard, 9 PO Box, 0 Unique) [See All] |
| Area Codes: | 585 / 624 / 716 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:14 PM |
| Population: | 77,900 [See All] |
| FIPS: | 36009 |
| CBSA: | Olean, NY |
| Land Area: | 1,287 sq mi |
| Water Area: | 14 sq mi |
| Coordinates: | 42.2885, -78.6814 |
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77,900 residents live across 33 ZIPs covering 1,287 sq mi, served by 33 distinct USPS-recognized cities.
Population moved from 81,761 to 77,900 from 2014 to 2024 — a -4.7% change. 9 ZIPs gained residents, 20 lost.
The county's wealthiest ZIP 14772 (Randolph, $79,583 median) and poorest ZIP 14779 (Salamanca, $42,593) are 12.6 miles apart — a 1.9× income gap across local geography.
Median home values vary 3.4× across this county — from $85,200 in 14753 (Limestone) to $286,800 in 14731 (Ellicottville).
Density varies 186× across the county — from 22 people/sq mi in 14729 (East Otto) to 4,033 in 14778 (Saint Bonaventure).
Educational attainment ranges from 9.9% bachelor's+ in 14726 (Conewango Valley) to 34.6% in 14731 (Ellicottville) — the breadth of educational profiles across the area.
Within New York, this is the #35 most populous of 62 counties and ranks #61 for median household income .
Weighted by population, the typical household earns about $59,490 across the county — reflecting what a typical resident sees, not a simple ZIP average.
21.4% of adults age 25+ hold a bachelor's degree or higher (11,463 of 53,644 reporting).
24 Standard delivery, 9 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 |
|---|---|---|---|---|---|---|
| 14760 | Olean | Standard | 17,474 | $54,929 | 66.3 | -4.0% |
| 14779 | Salamanca | Standard | 6,738 | $42,593 | 105.5 | 1.6% |
| 14706 | Allegany | Standard | 5,939 | $73,236 | 76.4 | -5.6% |
| 14070 | Gowanda | Standard | 5,001 | $53,310 | 50.9 | -17.3% |
| 14772 | Randolph | Standard | 4,394 | $79,583 | 90.6 | 7.5% |
| 14737 | Franklinville | Standard | 4,376 | $60,270 | 109.2 | 9.5% |
| 14042 | Delevan | Standard | 3,967 | $47,431 | 46.7 | 4.9% |
| 14719 | Cattaraugus | Standard | 3,448 | $62,188 | 93.9 | -1.5% |
| 14755 | Little Valley | Standard | 2,919 | $66,103 | 74.2 | -6.4% |
| 14770 | Portville | Standard | 2,621 | $56,910 | 27.8 | -7.6% |
| 14726 | Conewango Valley | Standard | 2,494 | $55,156 | 40.4 | 13.7% |
| 14138 | South Dayton | Standard | 2,046 | $56,868 | 49.2 | -9.1% |
| 14743 | Hinsdale | Standard | 2,037 | $57,244 | 45.8 | 7.8% |
| 14101 | Machias | Standard | 1,997 | $73,116 | 46.3 | -8.0% |
| 14741 | Great Valley | Standard | 1,805 | $70,962 | 62.9 | -18.6% |
| 14171 | West Valley | Standard | 1,611 | $75,625 | 49.8 | -19.7% |
| 14065 | Freedom | Standard | 1,597 | $61,058 | 36.3 | -12.5% |
| 14778 | Saint Bonaventure | PO Box | 1,539 | — | 0.4 | 10.9% |
| 14129 | Perrysburg | Standard | 1,236 | $68,542 | 32.1 | -13.9% |
| 14731 | Ellicottville | Standard | 1,226 | $67,583 | 45.5 | -10.8% |
| 14753 | Limestone | Standard | 1,060 | $55,000 | 48.6 | -0.5% |
| 14729 | East Otto | Standard | 756 | $64,276 | 34.9 | -11.4% |
| 14748 | Kill Buck | Standard | 446 | $47,917 | 18.7 | -43.8% |
| 14060 | Farmersville Station | Standard | 362 | $62,000 | 26.2 | -31.8% |
| 14041 | Dayton | Standard | 308 | $75,938 | 1.3 | 4.4% |
| 14173 | Yorkshire | PO Box | 266 | — | 0.6 | 1.1% |
| 14788 | Westons Mills | PO Box | 107 | $66,000 | 0.0 | -56.3% |
| 14783 | Steamburg | PO Box | 80 | — | 6.2 | -77.1% |
| 14168 | Versailles | PO Box | 50 | — | 0.0 | -55.0% |
| 14133 | Sandusky | PO Box | — | — | 0.0 | — |
| 14730 | East Randolph | PO Box | — | — | 0.0 | — |
| 14766 | Otto | PO Box | — | — | 0.0 | — |
| 14751 | Leon | PO Box | — | — | 0.0 | — |