What city is ZIP code 85371?

ZIP code 85371 is in Poston, AZ (La Paz County).

What county is ZIP code 85371 in?

ZIP code 85371 is mostly in La Paz County, Arizona.

How many people live in ZIP code 85371?

About 111 people live in the 85371 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Checked Oct 26, 2026

ZIP Code 85371

Poston, AZ, La Paz County

Population

111

Land area

9.3sq mi

People per sq mi

City

Poston

ZIP 85371 and nearby ZIP codes

Full map

ZIP 85371 at a glance

ZIP 85371 (Poston) is 82% less dense than Arizona as a whole.

Economy and federal money

Businesses, pandemic loans and political donations

Details

PPP loans

$101K

1 loan

PPP loans in this ZIP

Environment and hazard risk

ZIP 85371, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: heat wave

Storm events since 1996

382

Countywide, mostly flash flood

Flood insurance policies

212

1.5% of homes, county

July high / Jan low

108° / 42°F

4.6 inches of rain a year

Hazards, floods and storm history Check a flood zone

Health statistics

Share of adults in ZIP 85371, CDC PLACES estimates

All 40 measures

Obesity

41.7%

U.S. 33.3% +8.4 pts

Diabetes

15.4%

U.S. 12.1% +3.3 pts

Smoking

25.2%

U.S. 12.8% +12.4 pts

Uninsured (18-64)

19.1%

U.S. 11.1% +8.0 pts

Frequently asked questions

What city is ZIP code 85371?: ZIP code 85371 is in Poston, AZ (La Paz County).
What county is ZIP code 85371 in?: ZIP code 85371 is mostly in La Paz County, Arizona.
How many people live in ZIP code 85371?: About 111 people live in the 85371 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.

Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.