Skip to content
Elevation

Elevation of Ontario

1,001ft

above sea level · 305 m

Ontario is a city in California with 187,013 people, the 25th most populous in the state. Of the 249 US cities with 100,000 to 250,000 people, it’s the 59th highest.

By the Mapsfera Team

Elevation profile

Loading the map…

Place facts

Coordinates
34.06° N · 117.65° W
In degrees, minutes and seconds: 34° 3′ 48″ N · 117° 39′ 3″ W
UTM coordinates
11S · 439,936 E · 3,769,371 N
Zone 11 · NAD83, the official US datum
County
San Bernardino County
Where the city’s reference point falls
State
California
CA · capital: Sacramento
Time zone
Pacific Time
UTC−8 · UTC−7 in summer (daylight saving time)
Population (2025)
187,013 people
50.0 sq mi of land · 3,742 people/sq mi
Elevation model
USGS 3DEP, 1 m grid
Lidar from November 2018: the ground height at the city’s reference point.

Population

Ontario had 187,013 residents on July 1, 2025, according to Census Bureau estimates, 6.7% more than in April 2020, when it had 175,262. Its 50.0 sq mi of land work out to 3,742 people/sq mi; the state average is 253 people/sq mi.

It’s the 25th most populous of the 1,617 places the Census counts in California (cities, towns and CDPs), after Los Angeles (3,869,089), and holds 0.5% of the state’s population.

It lies entirely within San Bernardino County. Its reference point in the USGS gazetteer is 3.1 mi from the geographic center the Census gives for the city.

Compared with US cities of 100,000 to 250,000

Ontario sits at 1,001 ft (305 m) above sea level. Of the 249 US cities with 100,000 to 250,000 people, the highest is Lakewood (5,520 ft) and the lowest is Fort Lauderdale (3 ft). The average is 862 ft: Ontario is 139 ft above it.

The state capital, Sacramento, is 378 mi away in a straight line and 974 ft lower than Ontario.

The nearest city with more than 250,000 people is Riverside, 16 mi away in a straight line and 172 ft lower.

Of the 75 cities in California with a page, Ontario is the 14th highest: the highest is Hesperia (3,178 ft) and the lowest is Stockton (12 ft).

The highest point in California is Mount Whitney, at 14,494 ft according to the USGS: 13,493 ft above Ontario, 178 mi away in a straight line.

  1. 57 South Fulton 1,016 ft
  2. 58 Temecula 1,011 ft
  3. 59 Ontario 1,001 ft
  4. 60 Avondale 973 ft
  5. 61 Goodyear 965 ft

Each color band is 500 m (1,640 ft), the same colors as the map. See the full list

Nearest cities with a page

Tools for this place

Elevation profile Draw a route from Ontario and see how much it climbs and drops. Elevation of a point Compare the elevation of Ontario with any other point on the map. Map of San Bernardino County The county on the map with all its cities and towns, ready to print or download. Time zone The time right now in Ontario and its clock changes. What county am I in? See which county, city and ZIP code you’re in, from your location. Blank map of California counties Print it blank, with names or to color in.

Step-by-step guide How to find the elevation of any place

Frequently asked questions

What people most often ask about the elevation of Ontario.

What is the elevation of Ontario?

Ontario is 1,001 feet (305 m) above sea level. That’s the ground height from the USGS 3DEP elevation model at the city’s reference point in the official gazetteer (GNIS). The city doesn’t have a single elevation: it rises and falls from one neighborhood to another.

What are the coordinates of Ontario?

Latitude 34.06334 and longitude -117.65089, in decimal degrees (34° 3′ 48″ N · 117° 39′ 3″ W). In UTM, zone 11: 439,936 E and 3,769,371 N, on NAD83.

How does Ontario rank among the highest US cities of its size?

It’s the 59th highest of the 249 US cities with 100,000 to 250,000 people. The highest is Lakewood (5,520 ft) and the lowest is Fort Lauderdale (3 ft).

What county is Ontario in?

San Bernardino County, California.

Which is higher, Ontario or Sacramento?

Ontario. Ontario sits at 1,001 ft and Sacramento at 27 ft: a difference of 974 ft, 378 mi apart in a straight line.

How is elevation measured?

Elevation is the height above mean sea level. In the US the official reference is the NAVD88 vertical datum. Summits are surveyed on the ground, with leveling and precise GPS. The USGS 3DEP is an elevation model of the whole country, largely from 1-meter lidar: it gives the ground height at every point. That’s why it can differ by a few feet from the official figure of a sharp summit.

Sources

  • USGS 3DEP (EPQS service) The elevation: the ground height at the reference point. Public domain.
  • USGS GNIS (official gazetteer) The city’s reference point (“Populated Place”). Public domain.
  • U.S. Census Bureau, Vintage 2025 estimates Population, land area (2025 Gazetteer) and counties. Public domain.
  • TIGERweb (U.S. Census Bureau) Which county and city the point falls in. Public domain.
  • timezone-boundary-builder The point’s time zone (ODbL, © OpenStreetMap contributors).
  • Terrain Tiles, OpenStreetMap and OpenFreeMap The relief shading and the base map (ODbL).

Methodology and sources · Spotted a mistake? Let us know