Ontario, CA ZIP Codes

Mailing address format for Ontario

John Smith
123 Main St
ONTARIO CA 91761
USA

USPS prefers capital letters without punctuation. Check the exact ZIP+4 for a street address on the USPS website.

All ZIP codes in Ontario

ZIP Code Tabulation Areas (ZCTA), U.S. Census Bureau. A ZCTA can cover parts of more than one town.

Where is Ontario? Location, county and time zone

State

California

County

San Bernardino County

GPS coordinates

34.03704, -117.60596

Elevation

1,004 ft (306 m)

Time zone

America/Los AngelesPST · UTC-08:00

Population

175,265

Map of Ontario, CA 91761

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Ontario Street View

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ZIP codes near Ontario

• Eastvale, CA
  928805.3 mi
• Chino, CA
  91710, 91709, 917085.7 mi
• Montclair, CA
  91763, 917625.8 mi
• Upland, CA
  91786, 917846.3 mi
• Rancho Cucamonga, CA
  91737, 91764, 91739, 917306.8 mi
• Jurupa Valley, CA
  92509, 92337, 917528.3 mi
• Norco, CA
  928608.3 mi
• Claremont, CA
  917118.7 mi
• San Antonio Heights, CA
  917848.8 mi
• Pomona, CA
  91766, 91768, 917679.0 mi
• Chino Hills, CA
  91709, 92887, 928239.3 mi
• Fontana, CA
  92335, 92377, 92337, 923369.6 mi

Ontario ZIP code: FAQ