ZIP Code 85143 — San Tan Valley CDP, AZ Demographics & Data

ZIP code 85143 covers San Tan Valley, AZ in Pinal County with a population of about 41,517.

At a glance, the area shows median age of 37.5 (near the U.S. median).

It sits in telephone area codes 480, 520; U.S. House district AZ-5; the PHOENIX (PRESCOTT) media market.

Median household income in ZIP 85143 is about $89,501 — about 19% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 7.2%; unemployment rate near 3.4%; 22.9% of adults with a bachelor’s degree or higher (about 10.8 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Healthcare, Retail trade, and Manufacturing; about 17.3% of workers reporting work-from-home (about 2.1 points above the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $350,800 — about even with the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,528 (about 31% above the U.S. median rent ($1,163)), and owner-occupancy near 80.4% (about 15.0 points above the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 85143 in San Tan Valley, AZ, a household would need roughly $97,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $2,253. That is roughly in line with the local median household income ($89,501). Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for San Tan Valley CDP, AZ as Relatively Moderate (composite score 93.8), which is among the highest nationally. The strongest component scores on US5 are wildfire (98.0) and flood (96.4). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Climate normals for San Tan Valley CDP, AZ show little to no average snow.

IRS migration statistics show a net inflow of about 1,393 for ZIP 85143 (San Tan Valley CDP, AZ) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.