| ZIP Codes: | 29 ZIP Codes (18 Standard, 11 PO Box, 0 Unique) [See All] |
| Area Codes: | 279 / 530 / 916 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 11:52:47 PM |
| Population: | 422,233 [See All] |
| FIPS: | 06061 |
| CBSA: | Sacramento-Roseville-Folsom, CA |
| Land Area: | 1,077 sq mi |
| Water Area: | 14 sq mi |
| Coordinates: | 39.0051, -120.8831 |
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422,233 residents live across 29 ZIPs covering 1,077 sq mi, served by 24 distinct USPS-recognized cities.
Population moved from 363,775 to 422,233 from 2014 to 2024 — a +16.1% change. 17 ZIPs gained residents, 12 lost.
The county's wealthiest ZIP 95746 (Granite Bay, $183,305 median) and poorest ZIP 96143 (Kings Beach, $69,922) are 70.7 miles apart — a 2.6× income gap across local geography.
Median home values vary 3.0× across this county — from $487,000 in 95713 (Colfax) to $1,455,100 in 96146 (Olympic Valley).
Density varies 281× across the county — from 14 people/sq mi in 96146 (Olympic Valley) to 3,944 in 95678 (Roseville).
Educational attainment ranges from 22.2% bachelor's+ in 95631 (Foresthill) to 62.3% in 95746 (Granite Bay) — the breadth of educational profiles across the area.
Within California, this is the #22 most populous of 58 counties and ranks #10 for median household income with the #4 fastest decade growth .
On the national stage, Placer County is ranks #85 for income .
Weighted by population, the typical household earns about $119,054 across the county — reflecting what a typical resident sees, not a simple ZIP average.
43.0% of adults age 25+ hold a bachelor's degree or higher (129,098 of 300,161 reporting).
18 Standard delivery, 11 PO Box only, 0 single-entity Unique ZIPs serve this county.
3 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
Placer County grew 16.1% over the past decade — concentrated in 5 high-growth ZIPs:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 95747 | Roseville | Standard | 83,902 | $136,750 | 41.5 | 48.7% |
| 95648 | Lincoln | Standard | 57,459 | $112,333 | 145.0 | 17.6% |
| 95678 | Roseville | Standard | 45,346 | $100,554 | 11.5 | 8.1% |
| 95765 | Rocklin | Standard | 43,871 | $138,090 | 14.4 | 20.6% |
| 95661 | Roseville | Standard | 32,589 | $105,925 | 9.0 | 6.6% |
| 95677 | Rocklin | Standard | 29,206 | $105,713 | 9.8 | 28.1% |
| 95603 | Auburn | Standard | 28,432 | $85,357 | 39.8 | -0.8% |
| 95746 | Granite Bay | Standard | 22,985 | $183,305 | 25.5 | -3.1% |
| 95602 | Auburn | Standard | 19,701 | $97,466 | 50.2 | 6.5% |
| 95650 | Loomis | Standard | 13,405 | $117,912 | 23.2 | 9.4% |
| 95713 | Colfax | Standard | 9,448 | $87,839 | 70.4 | -4.8% |
| 95631 | Foresthill | Standard | 6,946 | $104,402 | 192.6 | 17.5% |
| 95658 | Newcastle | Standard | 5,894 | $126,581 | 23.6 | -5.9% |
| 95722 | Meadow Vista | Standard | 4,092 | $125,625 | 10.3 | -9.5% |
| 96145 | Tahoe City | PO Box | 3,441 | $112,875 | 98.4 | 7.0% |
| 96143 | Kings Beach | PO Box | 3,222 | $69,922 | 4.6 | -16.4% |
| 95663 | Penryn | Standard | 3,090 | $155,917 | 7.6 | 24.3% |
| 95703 | Applegate | Standard | 2,589 | $100,214 | 9.6 | 143.1% |
| 95681 | Sheridan | Standard | 1,267 | $95,978 | 17.5 | -14.1% |
| 96140 | Carnelian Bay | PO Box | 1,171 | $181,875 | 11.0 | 4.0% |
| 96146 | Olympic Valley | Standard | 1,154 | $160,833 | 82.1 | 40.2% |
| 95701 | Alta | PO Box | 984 | $98,125 | 31.7 | 37.0% |
| 96141 | Homewood | PO Box | 609 | $125,662 | 66.5 | -9.0% |
| 96148 | Tahoe Vista | PO Box | 562 | $103,750 | 2.9 | -28.0% |
| 95714 | Dutch Flat | PO Box | 394 | $95,795 | 1.4 | 38.7% |
| 95736 | Weimar | PO Box | 331 | $190,670 | 0.0 | 32.4% |
| 95715 | Emigrant Gap | PO Box | 61 | $163,625 | 76.6 | -23.8% |
| 95717 | Gold Run | PO Box | 55 | — | 0.2 | -72.4% |
| 95604 | Auburn | PO Box | 27 | — | 0.0 | -38.6% |