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Where am ILOCATED

What County Is Rancho Cucamonga, California In?

Rancho Cucamonga is in San Bernardino County, California. About 175,411 people live there (2020–2024 estimate). It uses Pacific Time and covers 46.5 sq mi (120 km²) of land. The nearest larger city or town is Fontana, 6.1 mi east.

Los AngelesSan DiegoSan Jose
Rancho Cucamonga in California
FontanaSan Antonio HeightsUpland
Rancho Cucamonga and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Population, 2020–2024 estimate
175,411 ± 81
Land area
46.5 sq mi (120 km²)
Time zone
Pacific TimeUTC-08:00 in January; UTC-07:00 in July
Sun today
Sunrise and sunset for the year
Elevation
1,418 ft 432 m, ground height at the central point
Median household income
$111,895 ± $3,824
Median home value
$740,200 ± $12,841
Median rent, with utilities
$2,357 ± $42
Homes lived in by their owners
62.3% ± 1.5 points
Water area
0.01 sq mi (0.02 km²)
State
California
Census place code
0659451
Coordinates (central point)
34.130306, -117.566067
Open this point in the location finder

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 Rancho Cucamonga

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 Rancho Cucamonga

34.130306, -117.566067 is a central point for Rancho Cucamonga, not a street address. Convert these coordinates or share a map link.

Elevation in Rancho Cucamonga

1,418 ft (432 m), the USGS ground height at Rancho Cucamonga’s central point (3DEP terrain, 1 m grid, NAVD 88). Ground height varies across town. Check elevation at another spot.

Sunrise and sunset in Rancho Cucamonga

Longest day
14 hours 26 minutes around June 21
Shortest day
9 hours 52 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.

Sunrise and sunset on the 15th of each month
DaySunriseSunsetDaylight
Jan 156:55 AM5:03 PM10 h 8 min
Feb 156:35 AM5:34 PM10 h 59 min
Mar 157:00 AM6:57 PM11 h 57 min
Apr 156:19 AM7:21 PM13 h 2 min
May 155:48 AM7:45 PM13 h 57 min
Jun 155:38 AM8:03 PM14 h 25 min
Jul 155:49 AM8:02 PM14 h 13 min
Aug 156:11 AM7:37 PM13 h 26 min
Sep 156:33 AM6:56 PM12 h 23 min
Oct 156:55 AM6:16 PM11 h 21 min
Nov 156:22 AM4:46 PM10 h 24 min
Dec 156:48 AM4:42 PM9 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 Rancho Cucamonga

Rancho Cucamonga uses Pacific Time (America/Los_Angeles).

Time zoneLocal time and UTC offsetNext clock change
Pacific TimeAmerica/Los_AngelesUTC-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

  1. 92336105,517 people
  2. 9233597,511 people
  3. 9173071,613 people
  4. 9173941,673 people
  5. 9170139,287 people
  6. 9178426,886 people
  7. 9173722,958 people
  8. 92358672 people

8 ZIP Code areas overlap Rancho Cucamonga. 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.

  1. Upland, California (city)5.5 mi west
  2. San Antonio Heights, California (CDP)5.6 mi west
  3. Fontana, California (city)6.1 mi east
  4. Ontario, California (city)6.8 mi south

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.

See this place on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.