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Mono County, California | |
|---|---|
| County of Mono | |
Mono Lake, the dominant geographical feature in Mono County | |
![]() Interactive map of Mono County | |
Location in the state of California | |
| Coordinates: 37°55′N 118°52′W / 37.917°N 118.867°W | |
| Country | United States |
| State | California |
| Region | Eastern California |
| Founded | April 21, 1861 |
| Named after | Mono Lake, which is derived from Monachi, a Yokutsan name for native peoples of the Sierra 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] | Supervisors |
| • 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 |
| • Density | 4.2/sq mi (1.6/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 |
Mono County (/ˈmoʊnoʊ/ MOH-noh) is a county located in the east central portion of the U.S. state of California. As of the 2020 United States census, the population was 13,195,[6] making it the fourth-least populous county in California. The county seat is Bridgeport.[8][9] The county is located east of the Sierra Nevada between Yosemite National Park and Nevada. The only incorporated town in the county is Mammoth Lakes,[10] which is located at the foot of Mammoth Mountain.[11] Other locations, such as June Lake, are also famous as skiing and fishing resorts. Located in the middle of the county is Mono Lake, a vital habitat for millions of migratory and nesting birds. The lake is located in a wild natural setting, with pinnacles of tufa arising out of the salty and alkaline lake. Also located in Mono County is Bodie, the official state gold rush ghost town, which is now a California State Historic Park.
Mono County was formed in 1861 from parts of Calaveras, Fresno and Mariposa counties. A portion of northern Mono County contributed to the formation of Alpine County in 1864; parts of the county's territory were given to Inyo County in 1866.
The county is named after Mono Lake which, in 1852, was named for a Native American Paiute tribe, the Mono people, who historically inhabited the Sierra Nevada from north of Mono Lake to Owens Lake. The tribe's western neighbors, the Yokuts, called them monachie, meaning "fly people" because they used fly larvae 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 first anglophones arrived. The Kuzedika were hunter-gatherers and their language is a part of the Shoshone language.[12]

According to the U.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 is White Mountain Peak which, at 14,252 feet (4,344 m), is the third-highest peak in California.
| 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]
| 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 or Alaska 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 or Pacific 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 | 0.84% | 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 | ||||
The 2010 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%) from other races, and 414 (2.9%) from two or more races. Hispanic or Latino of any race were 3,762 persons (26.5%).[32]
| Population and registered voters | ||
|---|---|---|
| Total population[27] | 14,016 | |
| Registered voters[33][note 1] | 6,000 | 42.8% |
| Democratic[33] | 1,970 | 32.8% |
| Republican[33] | 2,167 | 36.1% |
| Democratic–Republican spread[33] | -197 | -3.3% |
| Independent[33] | 248 | 4.1% |
| Green[33] | 62 | 1.0% |
| Libertarian[33] | 43 | 0.7% |
| Peace and Freedom[33] | 17 | 0.3% |
| Americans Elect[33] | 0 | 0.0% |
| Other[33] | 5 | 0.1% |
| No party preference[33] | 1,488 | 24.8% |
| City | Population[27] | Registered voters[33] [note 1] |
Democratic[33] | Republican[33] | D–R spread[33] | Other[33] | No party preference[33] |
|---|---|---|---|---|---|---|---|
| Mammoth Lakes | 8,081 | 36.5% | 35.0% | 29.3% | +5.7% | 10.3% | 29.1% |
| North Mono County | 2,803 | 46.7% | 28.5% | 45.7% | -17.2% | 5.3% | 20.3% |
| South Mono County excluding Mammoth Lakes | 3,130 | 55.6% | 32.3% | 40.5% | -8.2% | 5.7% | 20.8% |
In November 2008, Mono County was one of just three counties in California's interior in which voters rejected Proposition 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 neighboring Alpine County and Yolo County.[34]
Mono County is in California's 3rd congressional district, represented by Republican Kevin Kiley.[35]
In the state legislature Mono is in the 5th Assembly district, which is held by Republican Joe Patterson, and the 4th Senate district, which is held by Republican Marie Alvarado-Gil.
| Year | Republican | Democratic | Third party(ies) | |||
|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | |
| 2024 | 2,294 | 37.83% | 3,522 | 58.08% | 248 | 4.09% |
| 2020 | 2,513 | 37.30% | 4,013 | 59.56% | 212 | 3.15% |
| 2016 | 2,111 | 39.97% | 2,773 | 52.51% | 397 | 7.52% |
| 2012 | 2,285 | 44.10% | 2,733 | 52.75% | 163 | 3.15% |
| 2008 | 2,354 | 42.25% | 3,093 | 55.52% | 124 | 2.23% |
| 2004 | 2,621 | 49.10% | 2,628 | 49.23% | 89 | 1.67% |
| 2000 | 2,296 | 52.53% | 1,788 | 40.91% | 287 | 6.57% |
| 1996 | 1,882 | 46.00% | 1,580 | 38.62% | 629 | 15.38% |
| 1992 | 1,570 | 36.05% | 1,489 | 34.19% | 1,296 | 29.76% |
| 1988 | 2,177 | 61.38% | 1,284 | 36.20% | 86 | 2.42% |
| 1984 | 2,659 | 72.31% | 962 | 26.16% | 56 | 1.52% |
| 1980 | 2,132 | 62.32% | 865 | 25.29% | 424 | 12.39% |
| 1976 | 1,600 | 58.80% | 1,025 | 37.67% | 96 | 3.53% |
| 1972 | 1,872 | 66.88% | 828 | 29.58% | 99 | 3.54% |
| 1968 | 1,130 | 64.28% | 465 | 26.45% | 163 | 9.27% |
| 1964 | 850 | 56.07% | 666 | 43.93% | 0 | 0.00% |
| 1960 | 912 | 66.33% | 457 | 33.24% | 6 | 0.44% |
| 1956 | 673 | 73.79% | 237 | 25.99% | 2 | 0.22% |
| 1952 | 891 | 76.61% | 264 | 22.70% | 8 | 0.69% |
| 1948 | 541 | 64.79% | 255 | 30.54% | 39 | 4.67% |
| 1944 | 378 | 60.87% | 242 | 38.97% | 1 | 0.16% |
| 1940 | 459 | 46.13% | 523 | 52.56% | 13 | 1.31% |
| 1936 | 241 | 34.09% | 458 | 64.78% | 8 | 1.13% |
| 1932 | 199 | 34.25% | 374 | 64.37% | 8 | 1.38% |
| 1928 | 220 | 61.80% | 127 | 35.67% | 9 | 2.53% |
| 1924 | 166 | 53.55% | 45 | 14.52% | 99 | 31.94% |
| 1920 | 170 | 67.73% | 56 | 22.31% | 25 | 9.96% |
| 1916 | 137 | 42.02% | 158 | 48.47% | 31 | 9.51% |
| 1912 | 3 | 0.81% | 182 | 49.32% | 184 | 49.86% |
| 1908 | 224 | 59.89% | 121 | 32.35% | 29 | 7.75% |
| 1904 | 245 | 64.64% | 82 | 21.64% | 52 | 13.72% |
| 1900 | 284 | 52.11% | 258 | 47.34% | 3 | 0.55% |
| 1896 | 259 | 44.27% | 315 | 53.85% | 11 | 1.88% |
| 1892 | 286 | 53.36% | 166 | 30.97% | 84 | 15.67% |
The following table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.
| Population and crime rates | ||
|---|---|---|
| Population[27] | 14,016 | |
| Violent crime[37] | 49 | 3.50 |
| Homicide[37] | 0 | 0.00 |
| Forcible rape[37] | 3 | 0.21 |
| Robbery[37] | 2 | 0.14 |
| Aggravated assault[37] | 44 | 3.14 |
| Property crime[37] | 253 | 18.05 |
| Burglary[37] | 120 | 8.56 |
| Larceny-theft[37][note 3] | 275 | 19.62 |
| Motor vehicle theft[37] | 13 | 0.93 |
| Arson[37] | 1 | 0.07 |
| City | Population[38] | Violent crimes[38] | Violent crime rate per 1,000 persons |
Property crimes[38] | Property crime rate per 1,000 persons |
|---|---|---|---|---|---|
| Mammoth Lakes | 8,373 | 38 | 4.54 | 196 | 23.41 |

Eastern Sierra Transit Authority operates intercity bus service along U.S. 395, as well as local services in Mammoth Lakes. Service extends south to Lancaster, California (Los Angeles County) and north to Reno, Nevada.
Yosemite Area Regional Transit System (YARTS) also runs along U.S. 395 from Mammoth Lakes to Lee Vining before entering Yosemite National Park.
General aviation airports in Mono County include Bryant Field near Bridgeport, Mammoth Yosemite Airport and Lee Vining Airport. In December 2021, seasonal commercial air service by United Airlines to San Francisco, Los Angeles, and Denver began at the Eastern Sierra Regional Airport in Bishop, providing local service to southern Mono County.
The population ranking of the following table is based on the 2010 census of Mono County.[39]
† county seat
| Rank | City/Town/etc. | Municipal type | Population (2010 Census) |
|---|---|---|---|
| 1 | Mammoth Lakes | Town | 8,234 |
| 2 | Crowley Lake | CDP | 875 |
| 3 | Walker | CDP | 721 |
| 4 | Chalfant | CDP | 651 |
| 5 | June Lake | CDP | 629 |
| 6 | † Bridgeport | CDP | 575 |
| 7 | Coleville | CDP | 495 |
| 8 | Benton | CDP | 280 |
| 9 | Lee Vining | CDP | 222 |
| 10 | Swall Meadows | CDP | 220 |
| 11 | Sunny Slopes | CDP | 182 |
| 12 | Mono City | CDP | 172 |
| 13 | Paradise | CDP | 153 |
| 14 | Benton Reservation (Utu Utu Gwaitu Paiute Tribe)[40] | AIAN | 76 |
| 15 | Aspen Springs | CDP | 65 |
| 16 | Topaz | CDP | 50 |
| 17 | McGee Creek | CDP | 41 |
| 18 | Bridgeport Reservation (Paiute Indians)[41] | AIAN | 35 |