The office side of a San Bernardino birthday is unusual for a city this size, because San Bernardino is the seat of San Bernardino County — the largest county by area in the contiguous United States, more than 20,000 square miles of it — and the county is the employer that shapes the downtown workday. The County Government Center at 385 North Arrowhead Avenue and the San Bernardino Justice Center at 247 West Third Street put thousands of desks inside six square blocks, with the city's own offices in the Vanir Tower on North D Street, the San Bernardino City Unified School District administration at 777 North F Street running one of California's largest districts, Omnitrans and the county transportation offices near the 1918 Mission Revival Santa Fe Depot at 1170 West Third Street, and the federal and state agency floors scattered between them. South of downtown the employers change character completely: Stater Bros. Markets keeps its corporate headquarters and distribution operation at 301 South Tippecanoe Avenue, and next to it San Bernardino International Airport — built on the runways of the closed Norton Air Force Base — now anchors an air cargo hub and the warehouse belt that runs west along the 10 and the 210 through Rialto and Fontana. Add the Hospitality Lane office and hotel district in 92408, California State University, San Bernardino at 5500 University Parkway in 92407, San Bernardino Valley College at 701 South Mt. Vernon Avenue, Loma Linda University Health ten minutes southeast and Esri at 380 New York Street in Redlands, and a weekday desk drop here can mean a county counter, a warehouse breakroom, a faculty office or a GIS floor. Each needs a different arrival time, and the order form's phone field is what makes the difference.
Residential birthdays are where the grid's geography gets specific, because San Bernardino is not one neighborhood pattern but four. North of Highland — Shandin Hills, Little Mountain, the University District off Kendall Drive, Northpark, Verdemont out past Palm Avenue in 92407 — is hillside and suburban: long driveways, some gated tracts, addresses that sit above the street on a slope. East — Del Rosa, Arrowhead Suburban Farms, Patton, and across the line into Highland (92346) — is older ranch-and-tract housing on a deep grid, the easiest routing on the map and the shortest run from the East Highland Avenue bench. Central and west — Downtown 92401, 92410 around the Mount Vernon corridor, 92411 on the Westside, and unincorporated Muscoy north of Highland — mixes single-family blocks with apartment complexes that have locked gates and no front desk, which is the single most common reason a birthday delivery fails here. South is 92408 toward Tri-City and the airport. Then the ring: Colton (92324), Grand Terrace (92313), Loma Linda (92354), Redlands (92373 and 92374) with its historic-home district and Prospect Park, Mentone (92359), Rialto (92376, 92377), Bloomington (92316) and Fontana (92335, 92336, 92337). Upward, the same grid climbs the Rim of the World: Crestline (92325), Blue Jay (92317), Lake Arrowhead (92352) and Running Springs (92382), reached by SR-18 or SR-330 rather than by any freeway.