ZIP Codes of La Paz County, AZ

Population & People
Population & People
Total Population
16,664
Household Income
Household Income
Median Income
$49,316
Housing
Housing
Total Housing Units
13,672
Business & Economy
Business & Economy
Total Businesses
354
Employment
Employment
Employment Rate
38.44%
Education
Education
Bachelor's Degree+
13.46%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 9 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:9 ZIP Codes (3 Standard, 6 PO Box, 0 Unique) [See All]
Area Code:928
Timezone:Mountain (GMT -07:00)
Local Time:2:11:27 PM
Population:16,664 [See All]
FIPS:04012
Land Area:3,619 sq mi
Water Area:13 sq mi
Coordinates:33.7346, -114.1069
Quick Link:
https://www.zip-codes.com/county/az-la-paz.asp
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Notable population decline
Lost 18.1% of residents since 2014.
Arizona's shortest commutes
13-minute avg commute — the shortest in the state.

Standout ZIPs in this County


Most Populous
Parker · 9,433 people
56.6% of county total
Highest Income
Salome · $63,618 median
1.3× county average
Largest Land Area
Salome · 1,108.1 sq mi
Spans the most ground
Fastest Growth
Parker · -2.8% (10-yr)
9,709 → 9,433 residents
Most Educated
Quartzsite · 21.6% bachelor's+
522 of 2,422 adults 25+

Things worth knowing about La Paz County


16,664 residents live across 9 ZIPs covering 3,619 sq mi, served by 8 distinct USPS-recognized cities.

Population moved from 20,348 to 16,664 from 2014 to 2024 — a -18.1% change. 1 ZIPs gained residents, 7 lost.

The county's wealthiest ZIP 85348 (Salome, $63,618 median) and poorest ZIP 85334 (Ehrenberg, $39,143) are 43.5 miles apart — a 1.6× income gap across local geography.

Median home values vary 4.7× across this county — from $45,600 in 85328 (Cibola) to $216,400 in 85344 (Parker).

Density varies 124× across the county — from 1 people/sq mi in 85357 (Wenden) to 122 in 85371 (Poston).

Educational attainment ranges from 4.7% bachelor's+ in 85325 (Bouse) to 21.6% in 85346 (Quartzsite) — the breadth of educational profiles across the area.

Within Arizona, this is the #14 most populous of 16 counties and ranks #14 for median household income .

Weighted by population, the typical household earns about $52,801 across the county — reflecting what a typical resident sees, not a simple ZIP average.

13.5% of adults age 25+ hold a bachelor's degree or higher (1,808 of 13,434 reporting).

3 Standard delivery, 6 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about La Paz County


Big & sparse

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.

Total area
3,619
square miles
Avg density
4.6
people per sq mi
Population
16,664
across 9 ZIPs
Salome
1,108.1 sq mi
2,112 residents
Parker
652.3 sq mi
9,433 residents
Bouse
592.4 sq mi
1,203 residents

Population decline

La Paz County lost 18.1% of residents between 2014 and 2024. ZIPs that shed the largest share:

Poston
-80.3%
563 → 111 residents
Wenden
-43.4%
716 → 405 residents
Quartzsite
-42.8%
4,298 → 2,458 residents
Ehrenberg
-33.7%
1,051 → 697 residents
Salome
-27.8%
2,924 → 2,112 residents

All ZIP Codes in La Paz County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
85344ParkerStandard9,433$54,583652.3-2.8%
85346QuartzsitePO Box2,458$44,028504.6-42.8%
85348SalomeStandard2,112$63,6181,108.1-27.8%
85325BousePO Box1,203$47,691592.450.0%
85334EhrenbergPO Box697$39,143159.0-33.7%
85357WendenPO Box405$46,830412.2-43.4%
85328CibolaStandard245189.3-14.0%
85371PostonPO Box1110.9-80.3%
85359QuartzsitePO Box0.0

Adjacent & Nearby Counties