What is the population of Glenn County?

The population of Glenn County, CA is 28,283.

Where is Glenn County located?

Glenn County, CA is located at latitude 39.5984000 and longitude -122.3922100. It is in United States.

What is the area of Glenn County?

The area of Glenn County, CA is 3437 km².

What is the elevation of Glenn County?

Glenn County, CA has an elevation of 161 meters (528 feet) above sea level.

What time zone is Glenn County in?

Glenn County, CA is in the America/Los_Angeles time zone.

How has the population of Glenn County changed?

The population of Glenn County, CA has increased from 28,122 (2010) to 28,283 (2020), a change of 0.6%.

Glenn County, California

Glenn County: county in California, United States

About

Glenn County is a county located in the U.S. state of California. As of the 2010 census, the population was 28,122 and a population density of 8 people per km². After 10 years in 2020 county had an estimated population of 28,283 inhabitants. Its county seat is Willows. The county was created 135 years ago in 1890.

Glenn County locator map — Location of Glenn County on California map.

County Snapshot

Glenn County at a glance

Glenn County currently has 2 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

California counties

Open related pages

Largest city

Orland

Population 8,068

Quick Facts about Glenn County

Population	28,283 (2020)
Country	United States of America
State	California (United States)
Area	3437 km²
Water as percent of area	0.9%
Land as percent of area	99.1%
Latitude & Longitude	39.5984,-122.3922
Named for	Hugh J. Glenn
Altitude	860 feet / 262 meters
Capital	Willows
Establishment	January 01, 1891
Time Zone	America/Los_Angeles
Local time	01:42:26 (17th April 2026)
Density	8 Pop. per km² as of 2020
Population growth	0.57% (2010-2020)

Seal of Glenn County California seal image

Geography

Glenn County is located at 39°35'54"N 122°23'32"W (39.5984000, -122.3922100). It has 5 neighbors: Butte County, Colusa County, Lake County, Mendocino County and Tehama County.

Glenn County map

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The largest city of Glenn County is Orland with a population of 8,068. Other cities include and Willows population 6,036. See all Glenn County cities & populated places.

Glenn County Populated Places

Cities, towns, neighborhoods & other populated places in Glenn County.

City Name	Population	Title
Orland	8,068	City in Glenn County, California
Willows	6,036	City in California, USA

Official website of Glenn County

Official Website

Glenn County has 5 neighbours.

Butte County county in California, United States
Colusa County county in California, United States
Lake County county in California, United States
Mendocino County county in northwestern California, United States
Tehama County county in California, United States

Willows

Demographics

The population of Glenn County increased by 0.57% in 10 years.

Year	Population	% Change	Method
2010	28,122	-	census
2011	28,139	0.06%	estimation process
2012	27,851	-1.03%	estimation process
2013	27,809	-0.15%	estimation process
2014	27,831	0.08%	estimation process
2015	27,753	-0.28%	estimation process
2016	27,840	0.31%	estimation process
2017	27,926	0.31%	estimation process
2018	27,967	0.15%	estimation process
2019	28,393	1.5%	estimation process
2020	28,283	-0.39%	estimation process

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California Other Counties (more counties)

County Name	Population	Title
Los Angeles County	9,943,046	County in California, United States of America
Los Angeles	3,970,219	The second most populous city in the United States and the center of the Los Angeles metropolitan area.
San Diego County	3,332,427	Founded in 1850, is one of 58 counties in the US state of California.
Orange County	3,166,857	County in California, United States
Riverside County	2,489,188	County in California, United States
San Bernardino County	2,189,183	County in California, United States
Santa Clara County	1,907,105	County in California, United States
Alameda County	1,662,323	County in California, United States
Sacramento County	1,559,146	County in California, United States
San Diego	1,422,420	The eighth most populous city in the United States and the center of the San Diego metropolitan area.
Laguna	1,370,232	A city located in Orange County, California.
Contra Costa County	1,152,333	County in California, United States
San Jose	1,013,616	The tenth most populous city in the United States and the center of the San Jose metropolitan area.
Fresno County	1,000,918	County in California, United States
Kern County	901,362	This county is located in the southern San Joaquin Valley, extending eastward over the Tehachapi Mountains to the Mojave Desert.
San Francisco County	866,606	County, coextensive with the city of San Francisco, California, United States