When will the power be back in Walnut, CA?

Walnut is a city of about 27,250 residents in Los Angeles County.

Southern California Edison has reported outages for Walnut by name on its own public outage map (most recently observed 2026-09-18) — so when Walnut is affected, this page can show the city's own customers-out count and restoration time rather than only the county-wide total.

ZIP codes in Walnut:

• 91788
• 91789

Checking a ZIP goes straight to the address-level view for that area.

Around Walnut: the closest other places we track are West Covina, about 3 miles to the northwest; Diamond Bar, about 3 miles to the southeast; Covina, about 4 miles to the north; and La Puente, about 5 miles to the west. Also nearby: Pomona (6 mi E), San Dimas (6 mi NE), Baldwin Park (7 mi NW), Brea (7 mi S), Glendora (8 mi N), Azusa (8 mi NW), La Verne (8 mi NE) and La Habra (9 mi SW).

Looking further out, the nearest place we track is: northeast toward Claremont (10 mi); east toward Montclair (10 mi); southeast toward Chino Hills (10 mi); south toward Placentia (11 mi); southwest toward Whittier (10 mi); west toward El Monte (10 mi); and northwest toward Duarte (10 mi).

Walnut's last tracked outage began Sep 17, peaked at 101 customers out, and was restored in 13 hours. Across the 5 outages tracked here, the typical (median) restoration ran 11 hours.

• Sep 17 — 101 customers out, restored in 13 hours
• Sep 16 — 33 customers out, restored in 23 hours
• Aug 31 — 1,110 customers out, restored in 2 hours
• Aug 29 — 65 customers out, restored in 3 hours