Walnut, CA: Population, ZIP Codes & Nearby Cities

Walnut is a small incorporated city in Los Angeles County, California. In the dataset behind this page it has an estimated population of 29,685, sits at 34.033°N, 117.859°W, and observes Pacific time. Below you will find how it ranks inside California, which ZIP codes it uses, the closest places around it, and how far it is from major US cities.

What are the key facts about Walnut, CA?

What is the population of Walnut, CA?

Walnut has an estimated population of 29,685. That makes it the 282nd largest of the 1,470 places we list in California, and the 64th largest of 140 places in Los Angeles County. The typical place in California has about 3,379 residents, so Walnut is roughly 8.8 times the size of a typical neighbor in the state.

Estimates for places of this size carry wider margins of error than those for big cities, so treat the figure as a guide to scale. Our guide to understanding city population numbers explains why sources disagree.

Places in California with a similar population include Atascadero (30,075), Suisun City (29,663), Ukiah (29,561), Atwater (29,559), East Palo Alto (29,314). Comparing these pages is a quick way to see how Walnut differs from communities of the same scale.

How dense is Walnut?

Walnut has about 3,300 people per square mile (1,274 per square kilometer), which we classify as suburban. Within California, it is denser than about 72% of the listed places. Land at this level is usually a mix of single-family neighborhoods, shopping corridors and parks, where driving is common but destinations are close. Read how to interpret population density to see how we draw these lines.

What ZIP codes does Walnut use?

The postal data lists 2 ZIP codes for Walnut: 91789, 91788. Several codes in one place usually reflect separate delivery areas, post offices or large buildings with their own code. Codes beginning with 9 are assigned to the Pacific states (Alaska, California, Hawaii, Oregon and Washington). Learn more in our guide to how ZIP codes work or check any code with the ZIP code lookup.

What time zone is Walnut in?

Walnut is in the Pacific time zone, which is UTC−8 from Coordinated Universal Time in standard time (IANA zone America/Los_Angeles). The area observes daylight saving time, so clocks move forward in March and back in November. The nearest listed place in a different time zone is Fort Mohave, AZ, about 199 miles away, which gives a sense of how far the nearest zone boundary may be. Current local time: see the Pacific time hub. For the rules behind these zones, read US time zones explained.

Where is Walnut located in California?

Walnut lies in the southern part of California, at 34.033° north latitude and 117.859° west longitude. The state capital, Sacramento, is about 372 miles to the northwest. The closest listed place in another state is Pahrump, NV, roughly 185 miles to the northeast, which shows how near Walnut is to a state line. For big-city services, the nearest place with more than 100,000 people is West Covina, CA, 3 miles to the northwest.

Which cities are near Walnut, CA?

The closest listed place to Walnut is South San Jose Hills, CA, 3.0 miles to the southwest. Of the eight nearest places below, 8 are in the same county. Distances are straight-line (great-circle) miles measured between place centers; see how distance is calculated.

Which county is Walnut in?

Walnut is in Los Angeles County, which has the Federal Information Processing Standards (FIPS) code 06037. The county contains 140 places in our data, 122 of which have their own page here and 18 smaller communities that appear only in county and state lists. Other places in the county include Los Angeles (12,750,807), Long Beach (462,628), Lancaster (343,304), Santa Clarita (312,446), Glendale (199,303). Codes like this one help separate places that share a name; see the guide to counties and FIPS codes.

How far is Walnut from major US cities?

Among six major hubs, Walnut is closest to Los Angeles, CA at about 32 miles and farthest from New York, NY at about 2,430 miles in a straight line. Road distances are usually 10 to 30 percent longer. Try the distance calculator for any other pair.

Are there other places called Walnut?

Yes. Our data lists 4 other places named Walnut: Walnut, IL (1,306), Walnut, IA (769), Walnut, MS (754), Walnut, KS (227). When you search for Walnut, add the state or county so you land on the right one. This page covers the Walnut in Los Angeles County, California.

Planning a move to Walnut?

If you are weighing Walnut, start with the practical numbers: how far it is from where you live, whether it changes your time zone, and how its size and density compare with your current city. Use the distance calculator to measure the trip from where you live. The radius search tool lists every place within any distance of it. Our checklist for comparing cities explains what to check next.

Where to go next

Population and density come from a compiled dataset and are estimates. They may differ from official Census Bureau counts. Verify important figures at census.gov.