ZIP Code 85346 in Quartzsite, AZ

Community Overview

Quartzsite sits in the western Arizona desert, spanning 560 square miles of La Paz County. With a median age of 68.1 years, this is one of America's oldest communities by demographic measure. The year-round population of 2,803 residents occupies just 1,650 of the 3,256 total housing units. During summer months, Quartzsite is quiet. Come winter, the population swells dramatically as seasonal residents arrive in RVs and mobile homes.

Postal Services

This is a PO Box Only Zone. There's no alternative mail delivery across the 560 square mile territory. The Quartzsite post office maintains 1,499 PO Boxes for 1,650 households, a 91% adoption rate that reflects near-universal reliance on box service. Limited carrier delivery exists on just three routes (2 city, 1 rural), but most residents pick up mail at the post office.

A Seasonal Retirement Community

Seasonal vacancy tells the story: 1,389 of 3,256 housing units (43%) are used seasonally or occasionally. Mobile homes account for much of the housing stock, serving as winter retreats for retirees escaping colder climates. Median household income sits at $31,179, with a median home value of $78,800. These are modest retirement dwellings, not luxury vacation properties.

Local Character

Street names mix gemstone references with desert character. Emerald Avenue, Diamond Place, Turquoise Avenue, and Jade Avenue acknowledge the town's identity. W Main (112 delivery records) handles most commercial addresses, while streets like Moon Mountain Avenue and Desert Vista reflect the surrounding Sonoran landscape. Many addresses include SPC (space) or LOT designators, confirming the prevalence of mobile home parks and RV communities.

Demographics

With only 12 residents under 18 years old and just 35 in the 18-24 age bracket, this isn't a place for young families. Of residents 25 and older, 23.1% hold bachelor's degrees. The community is 87% white, with 31% identifying as Hispanic or Latino. Employment data shows 243 workers in transportation and warehousing, likely serving I-10 corridor traffic, and just 78 work from home despite the remote location.

Mailing Information

All mail to Quartzsite addresses should use the following format:

PO Box format:

Recipient Name
PO Box [Number]
Quartzsite, AZ 85346

Street addresses (limited availability):

Recipient Name
[Street Address]
Quartzsite, AZ 85346

Note: Due to PO Box Only Zone designation, most addresses require a PO Box. Verify delivery options before relying on street addresses.

Street Name Patterns

Street names mix gemstone references (Emerald, Diamond, Turquoise, Jade) with desert landscape features (Moon Mountain, Desert Vista), while SPC and LOT designators confirm prevalence of mobile home and RV parks.