County in California, United States
County in California, United States
Mono County
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Interactive map of Mono County
Location in the state of California
Coordinates:37°55′N 118°52′W / 37.917°N 118.867°W /37.917; -118.867 Country United States State California Region Eastern California Founded April 21, 1861; 164 years ago (1861-04-21 ) Named after Mono Lake , which is derived fromMonachi , aYokutsan name for native peoples of theSierra Nevada County seat Bridgeport Largest city Mammoth Lakes Government
• Type Council–CAO • Body Board of Supervisors • Chair[ 1] Lynda Salcido • Vice Chair[ 2] Jennifer Kreitz • Chair Pro Tem[ 3] Paul McFarland • Board of Supervisors[ 4] Jennifer Kreitz Rhonda Duggan Paul McFarland John Peters Lynda Salcido • County Administrative Officer Bob Lawton Area
• Total
3,132 sq mi (8,110 km2 ) • Land 3,049 sq mi (7,900 km2 ) • Water 83 sq mi (210 km2 ) Highest elevation 14,252 ft (4,344 m) Population • Total
13,195 12,991 • Density 4.328/sq mi (1.671/km2 ) GDP • Total $1.312 billion (2022) Time zone UTC-8 (Pacific Time Zone ) • Summer (DST ) UTC-7 (Pacific Daylight Time )Area code 530/837 ,760/442 Congressional district 3rd Website www .monocounty .ca .gov
Mono County (/ˈ m oʊ n oʊ / MOH -noh ) is acounty located in the east central portion of theU.S. state ofCalifornia . As of the2020 United States census , the population was 13,195,[ 6] making it the fourth-least populous county in California. Thecounty seat isBridgeport .[ 8] [ 9] The county is located east of theSierra Nevada betweenYosemite National Park andNevada . The only incorporated town in the county isMammoth Lakes ,[ 10] which is located at the foot ofMammoth Mountain .[ 11] Other locations, such asJune Lake , are also famous as skiing and fishing resorts. Located in the middle of the county isMono Lake , a vital habitat for millions of migratory and nesting birds. The lake is located in a wild natural setting, with pinnacles oftufa arising out of the salty and alkaline lake. Also located in Mono County isBodie , the official stategold rush ghost town , which is now aCalifornia State Historic Park .
Bodie , as seen from the hill looking to the cemeteryMono County was formed in 1861 from parts ofCalaveras ,Fresno andMariposa counties. A portion of northern Mono County contributed to the formation ofAlpine County in 1864; parts of the county's territory were given toInyo County in 1866.
The county is named afterMono Lake which, in 1852, was named for aNative American Paiute tribe, theMono people , who historically inhabited theSierra Nevada from north of Mono Lake toOwens Lake . The tribe's western neighbors, theYokuts , called themmonachie, meaning "fly people" because they used flylarvae as their chief food staple and trading article.[ 12]
Archeologists know almost nothing about the first inhabitants of the county, as little material evidence has been found from them. The Kuzedika, a band of Paiute, had been there many generations by the time the firstanglophones arrived. The Kuzedika werehunter-gatherers and their language is a part of theShoshone language .[ 12]
Mono Lake Tufa State Reserve According to theU.S. Census Bureau , the county has a total area of 3,132 square miles (8,110 km2 ), of which 3,049 square miles (7,900 km2 ) is land and 83 square miles (210 km2 ) (2.6%) is water.[ 13] The highest point in Mono County isWhite Mountain Peak which, at 14,252 feet (4,344 m), is the third-highest peak inCalifornia .
Historical population Census Pop. Note %± 1870 430 — 1880 7,499 1,644.0% 1890 2,002 −73.3% 1900 2,167 8.2% 1910 2,042 −5.8% 1920 960 −53.0% 1930 1,360 41.7% 1940 2,299 69.0% 1950 2,115 −8.0% 1960 2,213 4.6% 1970 4,016 81.5% 1980 8,577 113.6% 1990 9,956 16.1% 2000 12,853 29.1% 2010 14,202 10.5% 2020 13,195 −7.1% 2024 (est.) 12,991 [ 14] −1.5% U.S. Decennial Census[ 15] 1790–1960[ 16] 1900–1990[ 17] 1990–2000[ 18] 2010[ 19] 2020[ 20]
In June 2021,U.S. News & World Report ranked the county with the third best life expectancy in the United States at 96.5 years old.[ 21]
Mono County, California – Racial and ethnic composition Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categories and assigns them to a separate category. Hispanics/Latinos may be of any race. Race / Ethnicity(NH = Non-Hispanic ) Pop 1980 Pop 1990 Pop 2000[ 22] Pop 2010[ 19] Pop 2020[ 20] % 1980 % 1990 % 2000 % 2010 % 2020 White alone (NH)7,761 8,329 9,837 9,687 8,679 90.49% 83.66% 76.53% 68.21% 65.77% Black or African American alone (NH)16 41 53 42 68 0.19% 0.41% 0.41% 0.30% 0.52% Native American orAlaska Native alone (NH)334 341 267 239 177 3.89% 3.43% 2.08% 1.68% 1.34% Asian alone (NH)43 114 140 191 159 0.50% 1.15% 1.09% 1.34% 1.21% Native Hawaiian orPacific Islander alone (NH)x[ 23] x[ 24] 10 11 26 0.08% 0.08% 0.08% 0.08% 0.20% Other race alone (NH)18 5 82 33 78 0.21% 0.05% 0.64% 0.23% 0.59% Mixed race or Multiracial (NH)x[ 25] x[ 26] 190 237 501 x x 1.48% 1.67% 3.80% Hispanic or Latino (any race)405 1,126 2,274 3,762 3,507 4.72% 11.31% 17.69% 26.49% 26.58% Total 8,577 9,956 12,853 14,202 13,195 100.00% 100.00% 100.00% 100.00% 100.00%
Population, race, and income Total population[ 27] 14,016 White[ 27] 11,313 80.7% Black or African American[ 27] 180 1.3% American Indian or Alaska Native[ 27] 633 4.5% Asian[ 27] 78 0.6% Native Hawaiian or other Pacific Islander[ 27] 47 0.3% Some other race[ 27] 1,459 10.4% Two or more races[ 27] 306 2.2% Hispanic or Latino (of any race)[ 28] 3,613 25.8% Per capita income[ 29] $28,789 Median household income[ 30] $60,469 Median family income[ 31] $78,079
The2010 United States census reported that Mono County had a population of 14,202. The racial makeup of Mono County was 11,697 (82.4%)White , 47 (0.3%)African American , 302 (2.1%)Native American , 192 (1.4%)Asian , 11 (0.1%)Pacific Islander , 1,539 (10.8%) fromother races , and 414 (2.9%) from two or more races.Hispanic orLatino of any race were 3,762 persons (26.5%).[ 32]
In November 2008, Mono County was one of just three counties in California's interior in which voters rejectedProposition 8 which sought to ban gay marriage. The county's voters rejected Proposition 8 by 55.5 percent to 44.5 percent. The other interior counties in which Proposition 8 failed to receive a majority of votes were neighboringAlpine County andYolo County .[ 33]
Mono County is inCalifornia's 3rd congressional district , represented byRepublican Kevin Kiley .[ 34]
In thestate legislature Mono is inthe 4th senatorial district , represented byRepublican Marie Alvarado-Gil , andthe 8th Assembly district , represented byRepublican David Tangipa .[ 35]
After votingRepublican for six decades, Mono County was won byJohn Kerry in2004 by 7 votes. It has not voted for a Republican sinceGeorge W. Bush in2000 .[ 36]
United States presidential election results for Mono County, California[ 36] Year Republican Democratic Third party(ies) No. % No. % No. % 1892 286 53.36% 166 30.97% 84 15.67% 1896 259 44.27% 315 53.85% 11 1.88% 1900 284 52.11% 258 47.34% 3 0.55% 1904 245 64.64% 82 21.64% 52 13.72% 1908 224 59.89% 121 32.35% 29 7.75% 1912 3 0.81% 182 49.32% 184 49.86% 1916 137 42.02% 158 48.47% 31 9.51% 1920 170 67.73% 56 22.31% 25 9.96% 1924 166 53.55% 45 14.52% 99 31.94% 1928 220 61.80% 127 35.67% 9 2.53% 1932 199 34.25% 374 64.37% 8 1.38% 1936 241 34.09% 458 64.78% 8 1.13% 1940 459 46.13% 523 52.56% 13 1.31% 1944 378 60.87% 242 38.97% 1 0.16% 1948 541 64.79% 255 30.54% 39 4.67% 1952 891 76.61% 264 22.70% 8 0.69% 1956 673 73.79% 237 25.99% 2 0.22% 1960 912 66.33% 457 33.24% 6 0.44% 1964 850 56.07% 666 43.93% 0 0.00% 1968 1,130 64.28% 465 26.45% 163 9.27% 1972 1,872 66.88% 828 29.58% 99 3.54% 1976 1,600 58.80% 1,025 37.67% 96 3.53% 1980 2,132 62.32% 865 25.29% 424 12.39% 1984 2,659 72.31% 962 26.16% 56 1.52% 1988 2,177 61.38% 1,284 36.20% 86 2.42% 1992 1,570 36.05% 1,489 34.19% 1,296 29.76% 1996 1,882 46.00% 1,580 38.62% 629 15.38% 2000 2,296 52.53% 1,788 40.91% 287 6.57% 2004 2,621 49.10% 2,628 49.23% 89 1.67% 2008 2,354 42.25% 3,093 55.52% 124 2.23% 2012 2,285 44.10% 2,733 52.75% 163 3.15% 2016 2,111 39.97% 2,773 52.51% 397 7.52% 2020 2,513 37.30% 4,013 59.56% 212 3.15% 2024 2,294 37.83% 3,522 58.08% 248 4.09%
TheMono County Courthouse in Bridgeport. Public transportation [ edit ] Eastern Sierra Transit Authority operates intercity bus service along U.S. 395, as well as local services in Mammoth Lakes. Service extends south toLancaster, California (Los Angeles County) and north toReno, Nevada .
Yosemite Area Regional Transit System (YARTS) also runs along U.S. 395 from Mammoth Lakes to Lee Vining before enteringYosemite National Park .
General aviation airports in Mono County includeBryant Field near Bridgeport,Mammoth Yosemite Airport andLee Vining Airport . In December 2021, seasonal commercial air service byUnited Airlines toSan Francisco ,Los Angeles , andDenver began at theEastern Sierra Regional Airport inBishop , providing local service to southern Mono County.
Census-designated places [ edit ]
The population ranking of the following table is based on the2010 census of Mono County.[ 37]
† county seat
^ "District 5: Rhonda Duggan, Chair (2025) | Mono County California" .^ "District 1: Jennifer Kreitz , Vice Chair (2025) | Mono County California" .^ "District 3: Paul McFarland, Chair Pro-Tem (2025) | Mono County California" .^ "Board of Supervisors | Mono County California" .^ "White Mountain" . Peakbagger.com. RetrievedApril 11, 2015 .^a b "Mono County, California" .United States Census Bureau . RetrievedJanuary 30, 2022 .^ "Gross Domestic Product: All Industries in Mono County, CA" .Federal Reserve Economic Data .Federal Reserve Bank of St. Louis .^ "Mono County General Information" . Archived fromthe original on December 22, 2007. RetrievedNovember 5, 2007 .^ "Find a County" . National Association of Counties. RetrievedJune 7, 2011 .^ "Town of Mammoth Lakes, California" . RetrievedNovember 5, 2007 .^ "Mammoth Mountain" . RetrievedNovember 5, 2007 .^a b Sprague, Marguerite (2003). "Welcome to Bodie".Bodie's Gold . Reno, Nevada: University of Nevada Press. pp. 3, 205.ISBN 0-87417-628-X . ^ "2010 Census Gazetteer Files" . United States Census Bureau. August 22, 2012. RetrievedSeptember 28, 2015 .^ "Annual Estimates of the Resident Population for Counties: April 1, 2020 to July 1, 2024" . United States Census Bureau. RetrievedMay 9, 2025 .^ "Census of Population and Housing from 1790-2000" .US Census Bureau . RetrievedJanuary 24, 2022 .^ "Historical Census Browser" . University of Virginia Library. RetrievedSeptember 28, 2015 .^ Forstall, Richard L., ed. (March 27, 1995)."Population of Counties by Decennial Census: 1900 to 1990" . United States Census Bureau. RetrievedSeptember 28, 2015 . ^ "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF) . United States Census Bureau. April 2, 2001. RetrievedSeptember 28, 2015 .^a b "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2010: DEC Redistricting Data (PL 94-171) – Mono County, California" .United States Census Bureau .^a b "P2: Hispanic or Latino, and Not Hispanic or Latino by Race – 2020: DEC Redistricting Data (PL 94-171) – Mono County, California" .United States Census Bureau .^ Cirruzzo, Chelsea (June 30, 2021)."The 25 Counties With the Longest Life Expectancy" .U.S. News & World Report . RetrievedJuly 1, 2021 . ^ "P004: Hispanic or Latino, and Not Hispanic or Latino by Race – 2000: DEC Summary File 1 – Mono County, California" .United States Census Bureau .^ included in the Asian category in the 1980 Census ^ included in the Asian category in the 1990 Census ^ not an option in the 1980 Census ^ not an option in the 1990 Census ^a b c d e f g h U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B02001.U.S. Census website . Retrieved October 26, 2013. ^ U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B03003.U.S. Census website . Retrieved October 26, 2013. ^ U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19301.U.S. Census website . Retrieved October 21, 2013. ^ U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19013.U.S. Census website . Retrieved October 21, 2013. ^ U.S. Census Bureau. American Community Survey, 2011 American Community Survey 5-Year Estimates, Table B19113.U.S. Census website . Retrieved October 21, 2013. ^ "2010 Census P.L. 94-171 Summary File Data" .United States Census Bureau .^ "California results" .Los Angeles Times . September 16, 2014.^ "California's 3rd Congressional District - Representatives & District Map" . Civic Impulse, LLC. RetrievedNovember 4, 2025 .^ "Final Maps | California Citizens Redistricting Commission" . RetrievedNovember 4, 2025 .^a b Leip, David."Dave Leip's Atlas of U.S. Presidential Elections" .uselectionatlas.org . RetrievedSeptember 1, 2018 . ^ CNMP, US Census Bureau."This site has been redesigned and relocated. - U.S. Census Bureau" .www.census.gov . ^ "2010 Census Interactive Population Search" . Archived fromthe original on February 6, 2017. RetrievedDecember 13, 2018 .^ "2010 Census Interactive Population Search" . Archived fromthe original on February 6, 2017. RetrievedDecember 13, 2018 .Rockwell, G. L.; Honeywell, P. D. (2004).Water-quality data for selected stream sites in Bridgeport Valley, Mono County, California, April 2000 to June 2003 . U.S. Geological Survey Data Series. Vol. 89. Reston, VA: U.S. Department of the Interior, U.S. Geological Survey.
Places adjacent to Mono County, California
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