Modoc County, California

Modoc County: county in California, United States

About

Modoc County is a county located in the U.S. state of California. As of the 2010 census, the population was 9,686 and a population density of 1 people per km². After 10 years in 2020 county had an estimated population of 8,763 inhabitants. Its county seat is Alturas. The county was created 152 years ago in 1873.

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

County Snapshot

Modoc County at a glance

Modoc County currently has 1 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

1

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

Top linked places

Quick Facts about Modoc County

Population 8,763 (2020)
Country United States of America
State California (United States)
Area 10887 km2
Water as percent of area 6.17%
Land as percent of area 93.83%
Latitude & Longitude 41.5899,-120.7250
Named for Modoc people
Altitude 5,082 feet / 1549 meters
Capital Alturas
Establishment January 01, 1874
Time Zone Pacific Time Zone
Local time 20:14:06 (14th April 2026)
Density 1 Pop. per km² as of 2020
Population growth -10.53% (2010-2020)
Weather 29℉ Mostly Cloudy 7-days weather
Tule Lake camp main image
Tule Lake camp main image

Geography

Modoc County is located at 41°35'23"N 120°43'30"W (41.5898500, -120.7249700). It has 6 neighbors: Lake County, Lassen County, Shasta County, Siskiyou County, Washoe County and Klamath County.

Modoc County map

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The largest city of Modoc County is Alturas with a population of 2,542. . See all Modoc County cities & populated places.

Modoc County Populated Places

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

City Name Population Title
Alturas 2,542 City in California, USA

Weather

29°F
Mostly Cloudy
1 to 10 mph WNW Monday Night

Mostly cloudy, with a low around 29.

7-Day Forecast

Official website of Modoc County

Official Website
  • Alturas

Demographics

According to census records, the population of Modoc County decreased by 10.53% in 10 years.

Year Population % Change Method
2010 9,686 - census
2011 9,509 -1.86% estimation process
2012 9,351 -1.69% estimation process
2013 9,145 -2.25% estimation process
2014 9,068 -0.85% estimation process
2015 9,056 -0.13% estimation process
2016 8,961 -1.06% estimation process
2017 8,876 -0.96% estimation process
2018 8,800 -0.86% estimation process
2019 8,841 0.46% estimation process
2020 8,763 -0.89% estimation process
Comte de Modoc, Comté de Modoc, Condado de Modoc, Condado han Modoc, Contea di Modoc, Hrabstwo Modoc, Modoc, Modoc Comitatus, Modoc Kun, Modoc Kūn, Modoc konderria, Modoc megye, Modocin piirikunta, Modok, Modok srjan, Okrug Modok, Quan Modoc, Quận Modoc, mo duo ke xian, modoka ka'unti, modokku jun, mqatʿt mwdwk, shhrstan mwdwk kalyfrnya, Модок, Округ Модок, Մոդոկ շրջան, شهرستان مودوک، کالیفرنیا, مقاطعة مودوك, موڈوک کاؤنٹی, موڈوک کاؤنٹی، کیلیفورنیا, মোডোক কাউন্টি, モドック郡, 莫多克县

People born in Modoc County (1)

American politician (1872-1930) George W. Joseph was born in Modoc County

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