840 Area Code
State:California
Major City:San Bernardino
Timezone:Pacific
Current Time:
History of area code 840
840 was first put in service February 23, 2021. It was created from area code 909.
Where is area code 840
Area code 840 serves San Bernardino, CA and the surrounding areas. It is an overlay for area code 909 and serves the same area.
What time zone is area code 840?
The 840 area code is located in the Pacific timezone. The Pacific time zone is also known as America/Los_Angeles
840 area code map
Top 2 Counties in Area Code 840
| County | Total Population | % of 840 | % of County |
|---|---|---|---|
| Los Angeles, CA | 9,818,605 | 11% | 3% |
| San Bernardino, CA | 2,035,210 | 86% | 6% |
Top 38 Cities in Area Code 840
| City | Total Population | % of 840 | % of City |
|---|---|---|---|
| San Bernardino, CA | 209,924 | 4% | 100% |
| Fontana, CA | 196,069 | 3% | 98% |
| Rancho Cucamonga, CA | 165,269 | 3% | 100% |
| Ontario, CA | 163,924 | 3% | 100% |
| Pomona, CA | 149,058 | 2% | 100% |
| Rialto, CA | 99,171 | 2% | 98% |
| Chino, CA | 77,983 | 2% | 100% |
| Upland, CA | 73,732 | 1% | 100% |
| Chino Hills, CA | 74,799 | 3% | 96% |
| Redlands, CA | 68,747 | 3% | 100% |
| Diamond Bar, CA | 55,544 | 1% | 100% |
| Highland, CA | 53,104 | 1% | 100% |
| Yucaipa, CA | 51,367 | 2% | 100% |
| Colton, CA | 52,154 | 1% | 96% |
| Montclair, CA | 36,664 | 0% | 100% |
| Claremont, CA | 34,926 | 1% | 100% |
| La Verne, CA | 31,063 | 1% | 100% |
| San Dimas, CA | 33,371 | 1% | 88% |
| Walnut, CA | 29,172 | 1% | 84% |
| Loma Linda, CA | 23,261 | 1% | 100% |
| Bloomington, CA | 23,851 | 0% | 93% |
| Lake Arrowhead, CA | 12,424 | 1% | 100% |
| Big Bear City, CA | 12,304 | 2% | 100% |
| Grand Terrace, CA | 12,040 | 0% | 100% |
| Rowland Heights, CA | 48,993 | 0% | 23% |
| Crestline, CA | 10,770 | 1% | 100% |
| Muscoy, CA | 10,644 | 0% | 100% |
| Mentone, CA | 8,720 | 0% | 100% |
| Calimesa, CA | 7,879 | 1% | 100% |
| Eastvale, CA | 53,668 | 0% | 10% |
| Big Bear Lake, CA | 5,019 | 0% | 100% |
| Running Springs, CA | 4,862 | 0% | 100% |
| San Antonio Heights, CA | 3,371 | 0% | 100% |
| Beaumont, CA | 36,877 | 0% | 6% |
| Highgrove, CA | 3,988 | 0% | 28% |
| Lytle Creek, CA | 701 | 0% | 100% |
| Oak Glen, CA | 638 | 1% | 100% |
| Industry, CA | 219 | 0% | 26% |
Largest Landline Carriers in area code840
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Largest Wireless Carriers in area code840
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Prefixes in area code840
| Prefix | Usage | Primary City | Carrier | Introduced |
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