| ZIP Codes: | 29 ZIP Codes (21 Standard, 8 PO Box, 0 Unique) [See All] |
| Area Codes: | 480 / 520 / 928 |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 2:11:27 PM |
| Population: | 432,759 [See All] |
| FIPS: | 04021 |
| CBSA: | Phoenix-Mesa-Chandler, AZ |
| Land Area: | 4,477 sq mi |
| Water Area: | 4 sq mi |
| Coordinates: | 33.0085, -111.4968 |
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432,759 residents live across 29 ZIPs covering 4,477 sq mi, served by 20 distinct USPS-recognized cities.
Population moved from 363,121 to 432,727 from 2014 to 2024 — a +19.2% change. 18 ZIPs gained residents, 6 lost.
The county's wealthiest ZIP 85140 (San Tan Valley, $101,477 median) and poorest ZIP 85121 (Bapchule, $31,173) are 20.6 miles apart — a 3.3× income gap across local geography.
Median home values vary 4.7× across this county — from $102,500 in 85618 (Mammoth) to $481,700 in 85118 (Gold Canyon).
Density varies 145× across the county — from 9 people/sq mi in 85137 (Kearny) to 1,279 in 85140 (San Tan Valley).
Educational attainment ranges from 3.2% bachelor's+ in 85147 (Sacaton) to 43.3% in 85623 (Oracle) — the breadth of educational profiles across the area.
Within Arizona, this is the #3 most populous of 16 counties and ranks #4 for median household income with the #1 fastest decade growth .
Weighted by population, the typical household earns about $79,082 across the county — reflecting what a typical resident sees, not a simple ZIP average.
21.3% of adults age 25+ hold a bachelor's degree or higher (65,430 of 306,546 reporting).
21 Standard delivery, 8 PO Box only, 0 single-entity Unique ZIPs serve this county.
Median household income spans 3.3× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
Pinal County grew 19.2% over the past decade — concentrated in 4 high-growth ZIPs:
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 |
|---|---|---|---|---|---|---|
| 85122 | Casa Grande | Standard | 61,624 | $68,443 | 60.4 | 15.1% |
| 85138 | Maricopa | Standard | 55,260 | $95,867 | 91.6 | 56.7% |
| 85140 | San Tan Valley | Standard | 51,260 | $101,477 | 40.1 | 29.7% |
| 85143 | San Tan Valley | Standard | 44,444 | $93,707 | 43.8 | 17.4% |
| 85132 | Florence | Standard | 38,671 | $79,000 | 702.1 | 8.4% |
| 85120 | Apache Junction | Standard | 31,191 | $57,786 | 27.5 | 11.2% |
| 85119 | Apache Junction | Standard | 25,420 | $71,585 | 121.9 | 21.6% |
| 85139 | Maricopa | Standard | 20,784 | $86,894 | 691.5 | 15.0% |
| 85128 | Coolidge | Standard | 19,487 | $65,477 | 144.9 | 22.1% |
| 85131 | Eloy | Standard | 18,794 | $56,576 | 552.9 | 2.4% |
| 85118 | Gold Canyon | Standard | 14,932 | $86,393 | 412.8 | 24.4% |
| 85123 | Arizona City | PO Box | 10,003 | $69,137 | 36.2 | 4.4% |
| 85194 | Casa Grande | Standard | 8,077 | $82,935 | 101.5 | 23.8% |
| 85623 | Oracle | Standard | 5,558 | $68,541 | 321.2 | 14.8% |
| 85147 | Sacaton | PO Box | 4,911 | $48,517 | 30.3 | 1.6% |
| 85193 | Casa Grande | Standard | 4,118 | $57,930 | 275.8 | 2.8% |
| 85631 | San Manuel | Standard | 3,508 | $48,389 | 69.1 | -11.6% |
| 85145 | Red Rock | Standard | 3,277 | $80,357 | 32.6 | 68.5% |
| 85121 | Bapchule | PO Box | 2,800 | $31,173 | 44.2 | -8.0% |
| 85173 | Superior | Standard | 2,600 | $46,128 | 119.5 | -10.7% |
| 85137 | Kearny | Standard | 2,406 | $57,946 | 272.8 | -12.5% |
| 85172 | Stanfield | Standard | 1,688 | $71,806 | 80.5 | 35.3% |
| 85618 | Mammoth | PO Box | 1,550 | $51,953 | 114.3 | -16.4% |
| 85141 | Picacho | Standard | 364 | $71,346 | 16.7 | -5.5% |
| 85191 | Valley Farms | PO Box | 32 | — | 1.0 | — |
| 85130 | Casa Grande | PO Box | — | — | 0.0 | — |
| 85144 | San Tan Valley | Standard | — | — | 71.9 | — |
| 85117 | Apache Junction | PO Box | — | — | 0.0 | — |
| 85178 | Apache Junction | PO Box | — | — | 0.0 | — |