ZIP Code 92325 in Crestline, CA

Geographic Significance

Crestline sits at 4,700 feet elevation in the San Bernardino Mountains, serving as a gateway to the San Bernardino National Forest. With 9,892 residents, this is one of the largest PO Box-only communities in California. The town spans 12.4 square miles across mountain terrain, where street delivery infrastructure never developed to match the population.

Why PO Boxes Are Required

This is a PO Box Only Zone. No alternative mail delivery exists in Crestline. The post office maintains 4,436 PO Boxes for 4,200 occupied homes, meaning nearly every household relies on a PO Box. Mail doesn't arrive at mountain cabins scattered across the slopes. Instead, residents drive to the post office, where picking up mail becomes a daily social ritual.

Street Names Tell the Story

Crestline's streets tell the story of its development as a mountain retreat. The primary artery, Lake Drive, has 314 ZIP+4 records (the most in the area). But the real character shows in the whimsical naming: San Moritz Drive, Zurich Drive, Basel Drive, Jungfrau Drive, Davos Court, and dozens more Swiss-Alpine inspired names. These weren't practical navigation aids. They were marketing. Developers in the mid-20th century sold the romance of a Swiss alpine village to Southern California families looking for weekend escapes.

Valley of Enchantment and Lake Gregory

The recognized aliases, Valley of Enchantment and Lake Gregory, point to specific enclaves within the broader Crestline area. Lake Gregory is an actual lake created in 1938, and the surrounding neighborhoods took its name. Valley of Enchantment sounds like developer marketing, and it was. These names aren't valid for mailing (the USPS recognizes them but requires CRESTLINE on mail), but they persist on maps and in local usage.

A Community at the Crossroads

Demographically, Crestline splits between permanent mountain residents and seasonal users. Of 6,200 total housing units, 2,000 sit vacant, and 1,467 are for seasonal, recreational, or occasional use. That's 23.7% seasonal vacancy. Median age is 44.8 years. Home values run $358,300, higher than many rural areas but accessible compared to coastal California. Notably, 38.3% of workers work from home, triple the national average. These are remote workers, retirees, and self-employed individuals who chose mountain living.

Mixed Delivery Patterns

Mail delivery uses a mixed urban and rural pattern. The post office operates 2 city carrier routes and 1 rural route covering 303 and 579 ZIP+4 records respectively. This doesn't mean door-to-door delivery. Rather, it's an administrative classification. Some addresses receive delivery, but the vast majority use PO Boxes because mountain roads and scattered cabins make carrier routes impractical.

The Mountain Economy

The Crestline area includes 144 business establishments employing 1,238 people. Many serve the recreation economy: outfitters, restaurants, vacation rentals, and seasonal services. The proximity to nearby San Bernardino (Verdemont neighborhood is just 3.1 miles away) means some residents commute downhill for work while living in the mountains.

Mailing to Crestline

For mailing purposes, all addresses must use CRESTLINE, CA 92325. Even if a property is in Valley of Enchantment or near Lake Gregory, the official city name is CRESTLINE. Most mail goes to PO Box [number], Crestline, CA 92325.

Street Name Patterns

Street names split between practical geography (Lake Drive for Lake Gregory area) and whimsical Swiss-Alpine marketing (San Moritz, Zurich, Basel, Jungfrau, Davos), revealing Crestline's development as a romanticized mountain retreat.

Nearby Areas