| ZIP Codes: | 16 ZIP Codes (10 Standard, 6 PO Box, 0 Unique) [See All] |
| Area Code: | 530 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:11:29 PM |
| Population: | 17,967 [See All] |
| FIPS: | 06063 |
| Land Area: | 2,058 sq mi |
| Water Area: | 5 sq mi |
| Coordinates: | 39.9653, -120.8163 |
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17,967 residents live across 16 ZIPs covering 2,058 sq mi, served by 16 distinct USPS-recognized cities.
Population moved from 17,394 to 17,967 from 2014 to 2024 — a +3.3% change. 7 ZIPs gained residents, 7 lost (and 1 held flat).
The county's wealthiest ZIP 96105 (Chilcoot, $122,750 median) and poorest ZIP 96020 (Chester, $50,489) are 73.8 miles apart — a 2.4× income gap across local geography.
Median home values vary 2.2× across this county — from $273,700 in 96122 (Portola) to $588,700 in 96106 (Clio).
Density varies 44× across the county — from 1 people/sq mi in 96129 (Beckwourth) to 41 in 96122 (Portola).
Educational attainment ranges from 12.7% bachelor's+ in 95947 (Greenville) to 45.5% in 96106 (Clio) — the breadth of educational profiles across the area.
Within California, this is the #52 most populous of 58 counties and ranks #38 for median household income .
Weighted by population, the typical household earns about $71,909 across the county — reflecting what a typical resident sees, not a simple ZIP average.
21.9% of adults age 25+ hold a bachelor's degree or higher (3,013 of 13,751 reporting).
10 Standard delivery, 6 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 |
|---|---|---|---|---|---|---|
| 95971 | Quincy | Standard | 6,419 | $83,269 | 340.8 | 10.7% |
| 96122 | Portola | Standard | 4,447 | $54,205 | 108.1 | 1.5% |
| 96020 | Chester | Standard | 2,222 | $50,489 | 244.8 | -1.1% |
| 95947 | Greenville | Standard | 1,505 | $82,500 | 203.6 | -9.5% |
| 96103 | Blairsden Graeagle | Standard | 1,112 | $82,589 | 147.6 | -18.1% |
| 96105 | Chilcoot | Standard | 799 | $122,750 | 86.2 | 384.2% |
| 95956 | Meadow Valley | PO Box | 373 | $61,324 | 24.4 | -18.7% |
| 96129 | Beckwourth | Standard | 306 | $52,381 | 324.9 | 774.3% |
| 95983 | Taylorsville | Standard | 302 | $54,968 | 234.2 | -31.4% |
| 96106 | Clio | PO Box | 300 | — | 15.1 | 9.1% |
| 95923 | Canyon Dam | Standard | 68 | — | 69.6 | 466.7% |
| 95934 | Crescent Mills | Standard | 63 | — | 53.8 | -87.5% |
| 95984 | Twain | PO Box | 51 | — | 36.6 | — |
| 95915 | Belden | PO Box | 0 | — | 118.5 | -100.0% |
| 96135 | Vinton | PO Box | 0 | — | 0.0 | — |
| 95980 | Storrie | PO Box | — | — | 49.4 | — |