Walnut, California

Walnut population, 2020 to 2024

Walnut lost 1,100 residents from July 2020 to July 2024, a change of -3.9%. In the latest year it moved by -34. Among 429 California places of 5,000 or more, that growth ranks 361st; the median place changed by -1.1%. The median place of 5,000+ in California has 37,056 people, so Walnut is 74% of it.

Walnut covers 8.99 square miles of land, for 3,031 people per square mile of land. The median California place of 5,000+ has 3,725, so Walnut is less dense than the typical town.

What county Walnut is in

All of Walnut's residents live in Los Angeles County, which had 9,757,179 residents in 2024. Walnut holds 0.3% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Walnut

1 ZIP Code Tabulation Area (ZCTA) overlaps Walnut by at least 10% of the ZCTA's or the city's land: 91789. 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 Walnut is

The Census internal point of Walnut is at 34.037200, -117.855600. Sacramento, the capital, is 373.3 miles NNW in a straight line. The nearest larger place is Diamond Bar, CA (52,292 people), 3.3 miles away. The nearest city of 100,000 or more is West Covina, CA, 3.4 miles away.

Daylight in Walnut

At 34.04° N, Walnut 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 32 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Walnut

The eight nearest incorporated places of 1,000+ in California, measured between internal points. The closest is Diamond Bar, 3.3 miles away, with 52,292 people.