When will the power be back in Diamond Bar, CA?
Our restoration forecast is independent and unofficial, never the utility's commitment. How it works · How accurate it has been
Diamond Bar is a city of about 52,292 residents in Los Angeles County.
None of the utility outage maps we follow has yet listed an outage for Diamond Bar by name, so this page reports the Los Angeles County county-wide view, which covers Diamond Bar. If a serving utility does name Diamond Bar during an outage, the city's own numbers appear here automatically.
ZIP codes in Diamond Bar:
Checking a ZIP goes straight to the address-level view for that area.
Around Diamond Bar: the closest other places we track are Walnut, about 3 miles to the northwest; Pomona, about 5 miles to the northeast; Brea, about 6 miles to the southwest; and Chino Hills, about 6 miles to the southeast. Also nearby: West Covina (7 mi NW), Covina (7 mi NW), San Dimas (8 mi N), Yorba Linda (8 mi S), La Puente (8 mi W), Montclair (8 mi NE), Placentia (8 mi S) and Chino (9 mi E).
Looking further out, the nearest place we track is: north toward La Verne (9 mi); northeast toward Claremont (10 mi); east toward Ontario (12 mi); southeast toward Corona (17 mi); south toward Anaheim (11 mi); southwest toward La Habra (9 mi); west toward Whittier (12 mi); and northwest toward Baldwin Park (11 mi).
Who serves Diamond Bar?
We track live outage data from Southern California Edison, LADWP and Glendale Water & Power in Los Angeles County — but several utilities can serve one county, so confirm your own by searching your address on the live map. City of Pasadena, City of Burbank Water and Power, City of Industry and 2 others also serve parts of Los Angeles County — we don't yet read their own live outage maps.
Diamond Bar's last tracked outage began Oct 14, peaked at 1,166 customers out, and was restored in 11 hours. Across the 6 outages tracked here, the typical (median) restoration ran 8 hours.
- Oct 14 — 1,166 customers out, restored in 11 hours
- Sep 29 — 1,965 customers out, restored in 2 hours
- Sep 25 — 160 customers out, restored in 8 hours
- Sep 14 — 29 customers out, restored in 2 hours
County context: across all of Los Angeles County, federal outage records (EAGLE-I, 2014–2025) show outages of 200+ customers typically restored in about 35.5 hr. The full record for Los Angeles County
Common questions
How do I check the power outage status in Diamond Bar, CA?
To check your own street, search a Diamond Bar ZIP code — 91765 — and the map opens on that area.
