| ZIP Codes: | 86 ZIP Codes (67 Standard, 19 PO Box, 0 Unique) [See All] |
| Area Codes: | 248 / 313 / 586 / 734 / 810 / 947 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 11:53:52 PM |
| Population: | 1,282,834 [See All] |
| FIPS: | 26125 |
| CBSA: | Detroit-Warren-Dearborn, MI |
| Land Area: | 945 sq mi |
| Water Area: | 41 sq mi |
| Coordinates: | 42.5961, -83.3170 |
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1,282,834 residents live across 86 ZIPs covering 945 sq mi, served by 41 distinct USPS-recognized cities.
Population moved from 1,223,682 to 1,282,834 from 2014 to 2024 — a +4.8% change. 48 ZIPs gained residents, 19 lost.
The county's wealthiest ZIP 48070 (Huntington Woods, $190,150 median) and poorest ZIP 48342 (Pontiac, $35,253) are 12.7 miles apart — a 5.4× income gap across local geography.
Median home values vary 7.0× across this county — from $101,300 in 48342 (Pontiac) to $708,300 in 48301 (Bloomfield Hills).
Density varies 40× across the county — from 147 people/sq mi in 48370 (Oxford) to 5,795 in 48072 (Berkley).
Educational attainment ranges from 10.2% bachelor's+ in 48342 (Pontiac) to 83.8% in 48070 (Huntington Woods) — the breadth of educational profiles across the area.
Within Michigan, this is the #2 most populous of 83 counties and ranks #1 for median household income .
On the national stage, Oakland County is the #33 most populous US county .
Weighted by population, the typical household earns about $106,993 across the county — reflecting what a typical resident sees, not a simple ZIP average.
50.9% of adults age 25+ hold a bachelor's degree or higher (469,805 of 922,794 reporting).
67 Standard delivery, 19 PO Box only, 0 single-entity Unique ZIPs serve this county.
20 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
Median household income spans 5.4× 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 |
|---|---|---|---|---|---|---|
| 48307 | Rochester | Standard | 44,714 | $106,576 | 15.6 | 8.5% |
| 48178 | South Lyon | Standard | 37,789 | $131,558 | 49.6 | 24.8% |
| 48073 | Royal Oak | Standard | 33,106 | $91,627 | 7.2 | 0.3% |
| 48322 | West Bloomfield | Standard | 32,885 | $113,865 | 11.8 | 1.3% |
| 48309 | Rochester | Standard | 30,685 | $121,007 | 15.0 | 2.8% |
| 48237 | Oak Park | Standard | 29,318 | $71,510 | 5.2 | -1.0% |
| 48071 | Madison Heights | Standard | 28,419 | $69,503 | 7.1 | -5.4% |
| 48306 | Rochester | Standard | 28,389 | $163,684 | 22.5 | 2.0% |
| 48085 | Troy | Standard | 27,231 | $146,390 | 9.5 | 11.6% |
| 48336 | Farmington | Standard | 26,432 | $88,938 | 9.8 | 0.4% |
| 48371 | Oxford | Standard | 25,972 | $111,239 | 46.3 | 12.6% |
| 48340 | Pontiac | Standard | 25,669 | $47,891 | 7.6 | 1.2% |
| 48076 | Southfield | Standard | 25,405 | $90,058 | 7.1 | -0.2% |
| 48335 | Farmington | Standard | 25,077 | $99,439 | 7.2 | 10.2% |
| 48067 | Royal Oak | Standard | 24,868 | $112,840 | 4.4 | -2.0% |
| 48329 | Waterford | Standard | 24,715 | $85,709 | 12.9 | -0.8% |
| 48348 | Clarkston | Standard | 24,574 | $129,410 | 34.9 | 6.8% |
| 48326 | Auburn Hills | Standard | 24,514 | $85,190 | 17.8 | 19.1% |
| 48382 | Commerce Township | Standard | 24,479 | $137,768 | 19.2 | 10.5% |
| 48328 | Waterford | Standard | 24,478 | $72,299 | 10.2 | -0.9% |
| 48375 | Novi | Standard | 24,029 | $112,545 | 8.6 | 7.1% |
| 48390 | Walled Lake | Standard | 23,939 | $91,381 | 12.8 | 2.4% |
| 48083 | Troy | Standard | 23,771 | $90,794 | 8.6 | 0.4% |
| 48346 | Clarkston | Standard | 23,167 | $101,477 | 18.9 | 0.5% |
| 48075 | Southfield | Standard | 22,841 | $65,384 | 7.3 | 7.5% |
| 48442 | Holly | Standard | 22,788 | $86,575 | 88.8 | 6.9% |
| 48009 | Birmingham | Standard | 21,772 | $153,401 | 5.0 | 6.8% |
| 48331 | Farmington | Standard | 21,562 | $127,633 | 9.2 | -0.2% |
| 48220 | Ferndale | Standard | 21,527 | $89,881 | 4.4 | -5.6% |
| 48327 | Waterford | Standard | 20,960 | $74,788 | 12.4 | -8.4% |
| 48098 | Troy | Standard | 20,936 | $164,759 | 9.4 | 7.6% |
| 48393 | Wixom | Standard | 20,145 | $65,962 | 13.2 | 22.5% |
| 48377 | Novi | Standard | 19,816 | $83,104 | 10.4 | 25.3% |
| 48334 | Farmington | Standard | 19,618 | $102,228 | 8.7 | 7.4% |
| 48341 | Pontiac | Standard | 18,924 | $51,390 | 6.7 | 10.6% |
| 48386 | White Lake | Standard | 17,856 | $89,702 | 19.3 | 1.1% |
| 48374 | Novi | Standard | 17,672 | $182,827 | 9.2 | 18.9% |
| 48342 | Pontiac | Standard | 17,564 | $35,253 | 5.5 | -0.5% |
| 48302 | Bloomfield Hills | Standard | 17,505 | $178,103 | 12.7 | 13.6% |
| 48304 | Bloomfield Hills | Standard | 17,387 | $143,204 | 11.5 | 6.1% |
| 48033 | Southfield | Standard | 17,277 | $61,016 | 9.1 | 8.1% |
| 48323 | West Bloomfield | Standard | 17,235 | $144,457 | 9.7 | -1.7% |
| 48324 | West Bloomfield | Standard | 17,098 | $142,100 | 13.2 | 0.4% |
| 48084 | Troy | Standard | 15,960 | $107,098 | 6.1 | 9.5% |
| 48072 | Berkley | Standard | 15,149 | $116,239 | 2.6 | 0.1% |
| 48362 | Lake Orion | Standard | 14,966 | $115,230 | 11.6 | -4.9% |
| 48030 | Hazel Park | Standard | 14,963 | $67,073 | 2.9 | -9.5% |
| 48034 | Southfield | Standard | 14,796 | $62,938 | 4.3 | 5.7% |
| 48025 | Franklin | Standard | 14,734 | $185,000 | 8.1 | 0.8% |
| 48301 | Bloomfield Hills | Standard | 14,682 | $167,143 | 7.6 | 3.2% |
| 48381 | Milford | Standard | 14,094 | $105,213 | 20.6 | 9.5% |
| 48383 | White Lake | Standard | 13,285 | $102,072 | 17.8 | 2.5% |
| 48462 | Ortonville | Standard | 13,279 | $105,699 | 45.7 | -2.9% |
| 48360 | Lake Orion | Standard | 12,116 | $140,865 | 12.2 | 3.4% |
| 48017 | Clawson | Standard | 11,350 | $88,812 | 2.2 | -5.0% |
| 48359 | Lake Orion | Standard | 10,401 | $93,125 | 10.9 | 27.7% |
| 48165 | New Hudson | Standard | 9,566 | $106,220 | 10.8 | 53.7% |
| 48357 | Highland | Standard | 8,718 | $94,954 | 13.7 | -1.3% |
| 48356 | Highland | Standard | 8,365 | $103,872 | 15.4 | 0.6% |
| 48350 | Davisburg | Standard | 8,163 | $110,042 | 25.3 | 14.4% |
| 48363 | Oakland | Standard | 7,362 | $179,375 | 21.0 | 38.0% |
| 48380 | Milford | Standard | 7,125 | $131,979 | 29.9 | -0.6% |
| 48070 | Huntington Woods | Standard | 6,328 | $190,150 | 1.5 | 0.3% |
| 48367 | Leonard | Standard | 4,668 | $110,405 | 24.9 | 0.7% |
| 48320 | Keego Harbor | Standard | 4,277 | $78,150 | 1.5 | -2.6% |
| 48069 | Pleasant Ridge | Standard | 2,602 | $171,125 | 0.6 | 2.3% |
| 48370 | Oxford | Standard | 1,777 | $131,111 | 12.1 | -5.5% |
| 48361 | Lake Orion | PO Box | — | — | 0.0 | — |
| 48366 | Lakeville | PO Box | — | — | 0.0 | — |
| 48376 | Novi | PO Box | — | — | 0.0 | — |
| 48037 | Southfield | PO Box | — | — | 0.0 | — |
| 48086 | Southfield | PO Box | — | — | 0.0 | — |
| 48068 | Royal Oak | PO Box | — | — | 0.0 | — |
| 48332 | Farmington | PO Box | — | — | 0.0 | — |
| 48333 | Farmington | PO Box | — | — | 0.0 | — |
| 48325 | West Bloomfield | PO Box | — | — | 0.0 | — |
| 48012 | Birmingham | PO Box | — | — | 0.0 | — |
| 48387 | Union Lake | PO Box | — | — | 0.0 | — |
| 48343 | Pontiac | PO Box | — | — | 0.0 | — |
| 48321 | Auburn Hills | PO Box | — | — | 0.0 | — |
| 48303 | Bloomfield Hills | PO Box | — | — | 0.0 | — |
| 48007 | Troy | PO Box | — | — | 0.0 | — |
| 48099 | Troy | PO Box | — | — | 0.0 | — |
| 48347 | Clarkston | PO Box | — | — | 0.0 | — |
| 48308 | Rochester | PO Box | — | — | 0.0 | — |
| 48330 | Drayton Plains | PO Box | — | — | 0.0 | — |