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 134 years ago in 1890.

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

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%
Named for : Hugh J. Glenn
Altitude : 860 feet / 262 meters
Capital : Willows
Establishment : January 01, 1891
Time Zone : America/Los_Angeles
Local time : 03:41:31 (30th April 2025)
Density : 8 Pop. per km² as of 2020
Population growth : 0.57% (2010-2020)
Seal of Glenn County California seal image
Seal of Glenn County California
Seal of Glenn County California seal image
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 Hamilton City with a population of 169,300. Other cities include, Orland population 8,068 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
Hamilton City 169,300 A census-designated place in Yolo County, California.
Orland 8,068 City in Glenn County, California
Willows 6,036 City in California, USA

Glenn County has 5 neighbours.

  • 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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