| ZIP Codes: | 21 ZIP Codes (13 Standard, 8 PO Box, 0 Unique) [See All] |
| Area Codes: | 279 / 530 / 916 |
| Timezone: | Pacific (GMT -08:00) |
| Local Time: | 2:11:31 PM |
| Population: | 222,860 [See All] |
| FIPS: | 06113 |
| CBSA: | Sacramento-Roseville-Folsom, CA |
| Land Area: | 1,058 sq mi |
| Water Area: | 11 sq mi |
| Coordinates: | 38.6873, -121.8589 |
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222,860 residents live across 21 ZIPs covering 1,058 sq mi, served by 15 distinct USPS-recognized cities.
Population moved from 205,990 to 222,860 from 2014 to 2024 — a +8.2% change. 12 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 95618 (Davis, $115,591 median) and poorest ZIP 95645 (Knights Landing, $61,652) are 28.9 miles apart — a 1.9× income gap across local geography.
Median home values vary 2.5× across this county — from $411,600 in 95645 (Knights Landing) to $1,023,300 in 95612 (Clarksburg).
Density varies 300× across the county — from 10 people/sq mi in 95645 (Knights Landing) to 3,112 in 95605 (West Sacramento).
Educational attainment ranges from 18.7% bachelor's+ in 95627 (Esparto) to 77.7% in 95616 (Davis) — the breadth of educational profiles across the area.
Within California, this is the #27 most populous of 58 counties and ranks #20 for median household income with the #11 fastest decade growth .
Weighted by population, the typical household earns about $92,362 across the county — reflecting what a typical resident sees, not a simple ZIP average.
44.8% of adults age 25+ hold a bachelor's degree or higher (59,404 of 132,686 reporting). The most-educated ZIPs cluster around Davis.
13 Standard delivery, 8 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 95616 | Davis | Standard | 53,630 | $74,359 | 33.6 | 11.5% |
| 95691 | West Sacramento | Standard | 40,143 | $104,750 | 64.6 | 11.7% |
| 95695 | Woodland | Standard | 37,702 | $79,486 | 157.4 | -2.8% |
| 95776 | Woodland | Standard | 28,718 | $106,698 | 84.8 | 31.6% |
| 95618 | Davis | Standard | 26,267 | $115,591 | 43.4 | -3.5% |
| 95605 | West Sacramento | Standard | 14,896 | $71,924 | 4.8 | 4.0% |
| 95694 | Winters | Standard | 10,759 | $109,696 | 132.7 | 12.4% |
| 95627 | Esparto | Standard | 3,999 | $101,994 | 67.1 | 14.3% |
| 95612 | Clarksburg | Standard | 1,865 | $104,063 | 63.0 | 78.5% |
| 95645 | Knights Landing | Standard | 1,314 | $61,652 | 126.5 | -37.7% |
| 95653 | Madison | PO Box | 805 | — | 0.2 | 42.5% |
| 95697 | Yolo | PO Box | 800 | — | 0.3 | 44.4% |
| 95937 | Dunnigan | PO Box | 701 | — | 20.8 | -38.1% |
| 95637 | Guinda | Standard | 402 | — | 57.2 | -42.1% |
| 95607 | Capay | Standard | 330 | $149,236 | 150.2 | 4.8% |
| 95606 | Brooks | Standard | 232 | — | 36.0 | 562.9% |
| 95698 | Zamora | PO Box | 217 | $143,182 | 15.0 | -0.9% |
| 95679 | Rumsey | PO Box | 80 | — | 0.5 | 66.7% |
| 95617 | Davis | PO Box | — | — | 0.0 | — |
| 95798 | West Sacramento | PO Box | — | — | 0.0 | — |
| 95799 | West Sacramento | PO Box | — | — | 0.0 | — |