| ZIP Codes: | 20 ZIP Codes (14 Standard, 5 PO Box, 1 Unique) [See All] |
| Area Codes: | 315 / 680 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:54:33 PM |
| Population: | 73,123 [See All] |
| FIPS: | 36011 |
| CBSA: | Auburn, NY |
| Land Area: | 673 sq mi |
| Water Area: | 18 sq mi |
| Coordinates: | 42.9460, -76.6011 |
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73,123 residents live across 20 ZIPs covering 673 sq mi, served by 18 distinct USPS-recognized cities.
Population moved from 76,932 to 73,123 from 2014 to 2024 — a -5.0% change. 5 ZIPs gained residents, 12 lost.
The county's wealthiest ZIP 13034 (Cayuga, $104,154 median) and poorest ZIP 13111 (Martville, $59,063) are 24.4 miles apart — a 1.8× income gap across local geography.
Median home values vary 2.6× across this county — from $107,400 in 13111 (Martville) to $280,700 in 13081 (King Ferry).
Density varies 954× across the county — from 32 people/sq mi in 13071 (Genoa) to 30,750 in 13024 (Auburn).
Educational attainment ranges from 10.5% bachelor's+ in 13140 (Port Byron) to 46.5% in 13081 (King Ferry) — the breadth of educational profiles across the area.
Within New York, this is the #36 most populous of 62 counties and ranks #38 for median household income .
Hosts 1 single-entity Unique ZIP: 13024Auburn State Prison .
Weighted by population, the typical household earns about $68,989 across the county — reflecting what a typical resident sees, not a simple ZIP average.
24.7% of adults age 25+ hold a bachelor's degree or higher (13,167 of 53,218 reporting).
14 Standard delivery, 5 PO Box only, 1 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 13021 | Auburn | Standard | 37,247 | $60,712 | 130.2 | -5.3% |
| 13166 | Weedsport | Standard | 5,622 | $78,108 | 41.2 | 1.0% |
| 13118 | Moravia | Standard | 5,591 | $67,651 | 101.4 | -11.1% |
| 13140 | Port Byron | Standard | 3,959 | $61,977 | 48.9 | -9.1% |
| 13033 | Cato | Standard | 3,732 | $93,092 | 61.8 | -5.3% |
| 13092 | Locke | Standard | 2,689 | $78,056 | 48.1 | 6.4% |
| 13160 | Union Springs | Standard | 2,444 | $86,029 | 24.8 | 12.8% |
| 13156 | Sterling | Standard | 2,156 | $64,063 | 29.9 | -0.3% |
| 13034 | Cayuga | Standard | 2,029 | $104,154 | 28.7 | 9.3% |
| 13026 | Aurora | Standard | 1,619 | $96,324 | 39.0 | -10.0% |
| 13111 | Martville | Standard | 1,463 | $59,063 | 26.5 | -2.2% |
| 13147 | Scipio Center | Standard | 1,236 | $74,934 | 35.9 | -9.9% |
| 13024 | Auburn | Unique | 1,230 | — | 0.0 | -25.4% |
| 13081 | King Ferry | Standard | 1,122 | $93,558 | 31.7 | 5.6% |
| 13071 | Genoa | Standard | 796 | $85,972 | 24.7 | -19.5% |
| 13117 | Montezuma | PO Box | 132 | $63,250 | 0.4 | -7.7% |
| 13113 | Meridian | PO Box | 56 | $35,313 | 0.0 | -76.5% |
| 13064 | Fair Haven | PO Box | — | — | 0.0 | — |
| 13022 | Auburn | PO Box | — | — | 0.0 | — |
| 13139 | Poplar Ridge | PO Box | — | — | 0.0 | — |