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Ontario
City in California, United States
Overview
Ontario, California is a mid-size city in San Bernardino County known for its central location in the Inland Empire, easy freeway access, and Ontario International Airport. The city blends suburban comforts with busy transit, historic charm, and growing communities.
Geographic Context
Jurisdiction
United States
State
California
Population
11,645
Time Zone
America/Los_Angeles
Coordinates
34.06°, -117.65°
Key Metrics
Safety Score
65
Female Safety
65
LGBTQ+ Safety
70
Traffic Safety
60
Food Safety
95
Monthly Cost
$3,280
Local Cost
$2,375
Local Income
$3,000
Cashless
85
English
98
Temperature
17.4°C
Summer Avg
24.4°C
Winter Avg
10.5°C
Record High
45.3°C
Record Low
-4.3°C
Humidity
50%
Precipitation
289 mm
Internet Speed
320 Mbps
Upload
120 Mbps
Latency
12 ms
City Vibrancy
13
Coworking
0
Cafes
3
Nightlife
1
Parks
9
Transport
100
Walk Score
100
Footways
348.0
Airport
ONT
Distance
5 km
Explore
Frequently Asked Questions
Data sources
Source-backed data
NASA POWER - Climate normals and monthly weather measurements rendered as city weather metrics. Updated 2026-03-22.
World Air Quality Index - Latest available city-level air quality station measurement. Updated 2025-12-05.
Ookla Open Data - Internet speed aggregates for 2024Q3 from 27 tests. Updated 2025-12-05.
OpenStreetMap - Nearby amenities counted from OpenStreetMap-derived city extracts. Updated 2025-12-07.
OpenStreetMap transport extract - Walkability, footway density, and airport access metrics derived from mapped transport features. Updated 2025-12-06.
Oyster List city price model - City price estimates calibrated from local price surveys and jurisdiction-level cost signals. Updated 2026-01-14.
Estimated data
Oyster List AI-assisted estimates - Safety, lifestyle, income, and practical scores are model-assisted estimates derived from source-backed country and city signals. Confidence 85/100.
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