What County Is Ontario, California In?
Ontario is in San Bernardino County, California. About 180,547 people live there (2020–2024 estimate). It uses Pacific Time and covers 50 sq mi (129 km²) of land. The nearest larger city or town is Fontana, 9.6 mi northeast.
- Population, 2020–2024 estimate
- 180,547 ± 75
- Land area
- 50 sq mi (129 km²)
- Time zone
- Pacific TimeUTC-08:00 in January; UTC-07:00 in July
- Sun today
- Sunrise and sunset for the year
- Elevation
- 852 ft 260 m, ground height at the central point
- Median household income
- $88,941 ± $4,081
- Median home value
- $607,600 ± $7,033
- Median rent, with utilities
- $2,030 ± $50
- Homes lived in by their owners
- 58% ± 1.9 points
- Metro area
- Riverside-San Bernardino-Ontario, CAA principal city of the area
- Water area
- 0.03 sq mi (0.08 km²)
- State
- California
- Census place code
- 0653896
- Coordinates (central point)
- 34.037042, -117.605956
These coordinates mark a central point for the area, not a street address. Population, income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.
County boundaries in Ontario
For a point close to the city or county boundary, check the address with the office responsible for your form. Check a point on the county map.
Coordinates of Ontario
34.037042, -117.605956 is a central point for Ontario, not a street address. Convert these coordinates or share a map link.
Elevation in Ontario
852 ft (260 m), the USGS ground height at Ontario’s central point (3DEP terrain, 1 m grid, NAVD 88). Ground height varies across town. Check elevation at another spot.
Sunrise and sunset in Ontario
- Longest day
- 14 hours 26 minutes around June 21
- Shortest day
- 9 hours 54 minutes around December 21
- Earliest sunrise
- 5:38 AM around June 12
- Latest sunrise
- 7:14 AM the day before clocks go back in November
- Earliest sunset
- 4:40 PM around December 4
- Latest sunset
- 8:05 PM around June 29
Clocks go forward an hour on the second Sunday in March and back on the first Sunday in November, so sunrise and sunset jump an hour later in March and an hour earlier in November.
| Day | Sunrise | Sunset | Daylight |
|---|---|---|---|
| Jan 15 | 6:55 AM | 5:04 PM | 10 h 9 min |
| Feb 15 | 6:35 AM | 5:34 PM | 10 h 59 min |
| Mar 15 | 7:00 AM | 6:58 PM | 11 h 58 min |
| Apr 15 | 6:19 AM | 7:21 PM | 13 h 2 min |
| May 15 | 5:48 AM | 7:45 PM | 13 h 57 min |
| Jun 15 | 5:38 AM | 8:03 PM | 14 h 25 min |
| Jul 15 | 5:50 AM | 8:02 PM | 14 h 12 min |
| Aug 15 | 6:11 AM | 7:37 PM | 13 h 26 min |
| Sep 15 | 6:33 AM | 6:57 PM | 12 h 24 min |
| Oct 15 | 6:55 AM | 6:16 PM | 11 h 21 min |
| Nov 15 | 6:22 AM | 4:46 PM | 10 h 24 min |
| Dec 15 | 6:48 AM | 4:42 PM | 9 h 54 min |
Approximate times for a flat horizon at the central point; the days move by a day or so from year to year. Hills and weather can change what you see.
Time zones in Ontario
Ontario uses Pacific Time (America/Los_Angeles).
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| Pacific TimeAmerica/Los_Angeles | UTC-08:00 in January; UTC-07:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.
ZIP Code areas, largest first
5 ZIP Code areas overlap Ontario. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.
Bordering areas, nearest first
Distances are straight lines between map points.
- Eastvale, California (city)5.3 mi south
- Chino, California (city)5.5 mi southwest
- Montclair, California (city)5.8 mi northwest
- Upland, California (city)6.3 mi northwest
- Rancho Cucamonga, California (city)6.8 mi north
- Jurupa Valley, California (city)8.3 mi east
- Fontana, California (city)9.6 mi northeast
Before using this answer on a form
A city boundary, a CDP and a mailing city can mean different things.
Find the county where you are now, check its ZIP area, or check the time zone where you are.