Rialto, California

Rialto population, 2020 to 2024

Rialto added 955 residents from July 2020 to July 2024, a change of +0.9%. In the latest year it moved by +932. Among 429 California places of 5,000 or more, that growth ranks 130th; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Rialto is 2.8 times that size.

Rialto covers 24.09 square miles of land, for 4,355 people per square mile of land. The median California place of 5,000+ has 3,725, so Rialto is denser than the typical town.

What county Rialto is in

All of Rialto's residents live in San Bernardino County, which had 2,214,281 residents in 2024. Rialto holds 4.7% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Rialto

3 ZIP Code Tabulation Areas (ZCTAs) overlap Rialto by at least 10% of the ZCTA's or the city's land: 92316, 92376, 92377. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Rialto is

The Census internal point of Rialto is at 34.117400, -117.389200. Sacramento, the capital, is 383.5 miles NW in a straight line. The nearest larger place is Fontana, CA (218,455 people), 4.2 miles away. The ground at the internal point is about 411 m (1,348 ft) above sea level.

Daylight in Rialto

At 34.12° N, Rialto gets about 14 h 26 min of daylight around the June solstice and 9 h 53 min around the December solstice, a swing of 4 h 33 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the Rialto daylight page.

Places near Rialto

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Fontana, 4.2 miles away, with 218,455 people.