# Yolo County, California

Yolo County (/ˈjoʊloʊ/ ; Wintun: Yo-loy), officially the County of Yolo, is a county located in the northern portion of the U.S. state of California. Yolo County was one of the original counties of California, created in 1850 at the time of statehood. As of the 2020 census, its population was 216,403. Its county seat is Woodland. Yolo County is included in the greater Sacramento metropolitan area in the Sacramento Valley.

## Etymology

In the original act of 1850, the name was spelled "Yola". Yolo is a Patwin Native American name variously believed to be a corruption of a tribal name, Yo-loy, meaning "a place abounding in rushes", the village of Yodoi, believed to be in the vicinity of Knights Landing, California, or the name of the chief of said village, Yodo.

## History

Yolo County was one of the original counties of California, created in 1850 at the time of statehood.

## Government

The county is governed by a board of five district supervisors as well the governments of its four incorporated cities: Davis, West Sacramento, Winters, and Woodland.

## Geography

According to the U.S. Census Bureau, the county has a total area of 1,024 square miles (2,650 km$^2$), of which 8.9 square miles (23 km$^2$) (0.9%) is covered by water.

### Adjacent counties

* Colusa County - north
* Sutter County - northeast
* Sacramento County - east
* Solano County - south
* Napa County - west
* Lake County - northwest

## Transportation
### Major highways

* I-5
* I-80
* I-80 BL
* US 50
* I-505
* SR 16
* SR 45
* SR 84
* SR 113
* SR 128

### County roads

Addressing in Yolo County is based on a system of numbered county roads. The numbering system works in the following way:
* North–south roads have numbers from 41 to 117 and increase from west to east.
* East–west roads have numbers from 1 to 38A, and then from 151 to 161, and increase from north to south.
Each integer road number is generally one mile (1.6 km) apart, with letters occasionally designating roads less than one mile (1.6 km) apart. County roads entering urban areas generally become named roads once they cross a city boundary. Some examples include County Road 101 in |Woodland being renamed Pioneer Ave. and County Road 102 (also known as County Route E8) in Davis being named Pole Line Road.

### Public transportation

* Yolobus (Yolo County Transportation District) runs buses throughout Yolo County and into Sacramento, and Sacramento International Airport.
* The University of California, Davis and the city of Davis jointly run Unitrans, a combination local city bus and campus shuttle.
* Fairfield-Suisun Transit Line 30 also stops in Davis on its runs between Fairfield (Solano County) and Sacramento.
* Amtrak has a station in Davis.

### Airports

* Yolo County Airport
* University Airport
* Borges–Clarksburg Airport
* Watts–Woodland Airport

### Port

The Port of Sacramento, now known as the Port of West Sacramento, is an inland port in West Sacramento, California, in the Sacramento metropolitan area. It is 79 nautical miles (146 km) northeast of San Francisco, and is centered in the California Central Valley, one of the richest agricultural regions in the world.

## Crime

This table includes the number of incidents reported and the rate per 1,000 persons for each type of offense.
Population and crime rates :
| Population | 198,889 | 198,889 |
| Violent crime | 556 | 2.80 |
| Homicide | 7 | 0.04 |
| Forcible rape | 68 | 0.34 |
| Robbery | 171 | 0.86 |
| Aggravated assault | 310 | 1.56 |
| Property crime | 2,979 | 14.98 |
| Burglary | 1,357 | 6.82 |
| Larceny-theft | 3,844 | 19.33 |
| Motor vehicle theft | 559 | 2.81 |
| Arson | 75 | 0.38 |

### Cities by population and crime rates

Cities by population and crime rates :
| City | Population | Violent crimes | Violent crime rate per 1,000 persons | Property crimes | Property crime rate per 1,000 persons |
| Davis | 69,289 | 107 | 1.53 | 2,190 | 31.39 |
| West Sacramento | 53,727 | 212 | 3.90 | 1,603 | 29.48 |
| Winters | 7,286 | 9 | 1.22 | 84 | 12.49 |
| Woodland | 60,531 | 224 | 3.66 | 1,488 | 24.32 |

## Politics

Yolo is a strongly Democratic county in presidential and congressional elections. The last Republican presidential candidate to win a majority in the county was Dwight Eisenhower in 1952, which is the longest Republican drought for any California county. In fact, since 1928, Eisenhower's win in 1952 was the only time the county was carried by the Republican presidential nominee.
United States presidential election results for Yolo County, California :
| Year | Republican | Republican | Democratic | Democratic | Third party(ies) | Third party(ies) |
| Year | No. | % | No. | % | No. | % |
| 2024 | 27,844 | 30.06% | 61,405 | 66.30% | 3,372 | 3.64% |
| 2020 | 27,292 | 28.05% | 67,598 | 69.48% | 2,404 | 2.47% |
| 2016 | 20,739 | 25.26% | 54,752 | 66.70% | 6,599 | 8.04% |
| 2012 | 23,368 | 31.29% | 48,715 | 65.24% | 2,588 | 3.47% |
| 2008 | 24,592 | 30.84% | 53,488 | 67.07% | 1,669 | 2.09% |
| 2004 | 28,005 | 38.75% | 42,885 | 59.34% | 1,379 | 1.91% |
| 2000 | 23,057 | 37.53% | 33,747 | 54.93% | 4,632 | 7.54% |
| 1996 | 18,807 | 32.38% | 33,033 | 56.88% | 6,239 | 10.74% |
| 1992 | 17,574 | 28.15% | 33,297 | 53.33% | 11,565 | 18.52% |
| 1988 | 22,358 | 41.89% | 30,429 | 57.01% | 585 | 1.10% |
| 1984 | 24,329 | 47.84% | 25,879 | 50.89% | 645 | 1.27% |
| 1980 | 19,603 | 39.45% | 21,527 | 43.32% | 8,560 | 17.23% |
| 1976 | 18,376 | 42.42% | 23,533 | 54.33% | 1,408 | 3.25% |
| 1972 | 17,969 | 42.04% | 23,694 | 55.44% | 1,075 | 2.52% |
| 1968 | 11,123 | 38.41% | 15,833 | 54.67% | 2,004 | 6.92% |
| 1964 | 7,976 | 30.36% | 18,266 | 69.52% | 32 | 0.12% |
| 1960 | 10,104 | 44.73% | 12,395 | 54.87% | 90 | 0.40% |
| 1956 | 9,347 | 47.99% | 10,075 | 51.72% | 57 | 0.29% |
| 1952 | 9,375 | 53.17% | 8,119 | 46.04% | 139 | 0.79% |
| 1948 | 5,560 | 43.83% | 6,655 | 52.47% | 469 | 3.70% |
| 1944 | 4,233 | 41.84% | 5,837 | 57.70% | 46 | 0.45% |
| 1940 | 4,373 | 40.29% | 6,380 | 58.78% | 101 | 0.93% |
| 1936 | 2,594 | 29.84% | 5,992 | 68.94% | 106 | 1.22% |
| 1932 | 2,515 | 29.49% | 5,780 | 67.77% | 234 | 2.74% |
| 1928 | 3,545 | 56.96% | 2,641 | 42.43% | 38 | 0.61% |
| 1924 | 2,470 | 45.35% | 797 | 14.63% | 2,180 | 40.02% |
| 1920 | 3,375 | 61.95% | 1,787 | 32.80% | 286 | 5.25% |
| 1916 | 2,334 | 42.43% | 2,922 | 53.12% | 245 | 4.45% |
| 1912 | 9 | 0.23% | 2,239 | 56.06% | 1,746 | 43.72% |
| 1908 | 1,707 | 49.01% | 1,553 | 44.59% | 223 | 6.40% |
| 1904 | 1,702 | 51.87% | 1,301 | 39.65% | 278 | 8.47% |
| 1900 | 1,510 | 45.81% | 1,687 | 51.18% | 99 | 3.00% |
| 1896 | 1,485 | 44.84% | 1,753 | 52.93% | 74 | 2.23% |
| 1892 | 1,372 | 40.78% | 1,707 | 50.74% | 285 | 8.47% |
| 1888 | 1,350 | 44.66% | 1,580 | 52.27% | 93 | 3.08% |
| 1884 | 1,412 | 48.74% | 1,421 | 49.05% | 64 | 2.21% |
| 1880 | 1,256 | 47.38% | 1,374 | 51.83% | 21 | 0.79% |
Yolo County has been somewhat more likely to elect Republican governors since then (Ronald Reagan carried the county in 1966, George Deukmejian in 1986, and Arnold Schwarzenegger in 2003 and 2006).
In the United States House of Representatives, Yolo County is split between California's 4th and 7th congressional districts, represented by Mike Thompson (D–St. Helena) and Doris Matsui (D–Sacramento), respectively.
In the California State Senate, the county is split between the 3rd and 6th Senate districts, represented by Christopher Cabaldon and Roger Niello, respectively.
In the California State Assembly, the county is split between the 4th and 7th Assembly districts, represented by Cecilia Aguiar-Curry and Josh Hoover, respectively.
In June 1978, Yolo was one of only three counties in the entire state to reject Proposition 13 (the others being San Francisco and Kern).
In November 2008, Yolo was one of just three counties in California's interior in which voters rejected Proposition 8 to ban gay marriage. Yolo voters rejected Proposition 8 by a vote of 58.65 to 41.35%. The other interior counties in which Proposition 8 failed to receive a majority of votes were Alpine County and Mono County.
Population and registered voters :
| Total population | 198,889 | 198,889 |
| Registered voters | 101,849 | 51.2% |
| Democratic | 48,106 | 47.2% |
| Republican | 24,333 | 23.9% |
| Democratic–Republican spread | +23,773 | +23.3% |
| American Independent | 2,835 | 2.8% |
| Green | 1,044 | 1.0% |
| Libertarian | 671 | 0.7% |
| Peace and Freedom | 376 | 0.4% |
| Americans Elect | 4 | 0.0% |
| Other | 404 | 0.4% |
| No party preference | 24,076 | 23.6% |

### Cities by population and voter registration

Cities by population and voter registration 2013 :
| City | Population | Registered voters | Democratic | Republican | D–R spread | Other | No party preference |
| Davis | 65,359 | 57.6% | 54.0% | 14.7% | +39.3% | 7.1% | 26.3% |
| West Sacramento | 47,278 | 48.9% | 44.7% | 26.0% | +18.7% | 9.4% | 23.4% |
| Winters | 6,616 | 50.3% | 44.8% | 27.6% | +17.2% | 7.8% | 22.6% |
| Woodland | 55,229 | 46.9% | 43.7% | 30.4% | +13.3% | 8.2% | 20.9% |

## Demographics
### 2020 census

Yolo 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 2000 | Pop 2010 | Pop 2020 | % 2000 | % 2010 | % 2020 |
| White alone (NH) | 97,942 | 100,240 | 93,911 | 58.07% | 49.91% | 43.40% |
| Black or African American alone (NH) | 3,133 | 4,752 | 5,722 | 1.86% | 2.37% | 2.64% |
| Native American or Alaska Native alone (NH) | 1,165 | 1,098 | 948 | 0.69% | 0.55% | 0.44% |
| Asian alone (NH) | 16,390 | 24,640 | 29,872 | 9.72% | 12.77% | 13.80% |
| Pacific Islander alone (NH) | 443 | 817 | 1,079 | 0.26% | 0.41% | 0.50% |
| Other race alone (NH) | 396 | 443 | 1,278 | 0.23% | 0.22% | 0.59% |
| Mixed or multiracial (NH) | 5,484 | 6,906 | 11,893 | 3.25% | 3.44% | 5.50% |
| Hispanic or Latino (any race) | 43,707 | 60,953 | 71,700 | 25.91% | 30.35% | 33.13% |
| Total | 168,660 | 200,849 | 216,403 | 100.00% | 100.00% | 100.00% |

### 2011

Population, race, and income :
| Total population | 198,889 | 198,889 |
| White | 132,734 | 66.7% |
| Black or African American | 5,006 | 2.5% |
| American Indian or Alaska Native | 2,485 | 1.2% |
| Asian | 25,626 | 12.9% |
| Native Hawaiian or other Pacific Islander | 1,112 | 0.6% |
| Some other race | 20,510 | 10.3% |
| Two or more races | 11,416 | 5.7% |
| Hispanic or Latino (of any race) | 59,340 | 29.8% |
| Per capita income | $28,631 | $28,631 |
| Median household income | $57,920 | $57,920 |
| Median family income | $74,991 | $74,991 |

#### Places by population, race, and income

Places by population and race :
| Place | Type | Population | White | Other | Asian | Black or African American | Native American | Hispanic or Latino (of any race) |
| Clarksburg | CDP | 423 | 87.0% | 0.0% | 0.0% | 0.0% | 13.0% | 13.9% |
| Davis | City | 65,359 | 63.8% | 11.1% | 22.0% | 1.9% | 1.2% | 13.5% |
| Dunnigan | CDP | 1,043 | 68.6% | 9.7% | 8.5% | 13.1% | 0.0% | 21.4% |
| Esparto | CDP | 2,877 | 62.8% | 35.2% | 2.0% | 0.0% | 0.0% | 55.3% |
| Guinda | CDP | 450 | 50.0% | 14.4% | 2.4% | 33.1% | 0.0% | 12.2% |
| Knights Landing | CDP | 958 | 94.6% | 1.5% | 0.0% | 0.0% | 4.0% | 47.6% |
| Madison | CDP | 287 | 54.4% | 45.6% | 0.0% | 0.0% | 0.0% | 76.0% |
| Monument Hills | CDP | 1,512 | 85.6% | 9.7% | 3.0% | 1.7% | 0.0% | 17.1% |
| University of California, Davis | CDP | 6,805 | 43.6% | 10.8% | 41.2% | 1.6% | 2.8% | 13.9% |
| West Sacramento | City | 47,278 | 64.9% | 18.3% | 8.4% | 5.3% | 3.1% | 32.9% |
| Winters | City | 6,616 | 78.6% | 16.9% | 4.0% | 0.0% | 0.6% | 49.8% |
| Woodland | City | 55,229 | 70.6% | 20.0% | 6.5% | 1.4% | 1.5% | 44.8% |
| Yolo | CDP | 335 | 33.1% | 44.5% | 0.0% | 0.0% | 22.4% | 94.0% |
Places by population and income :
| Place | Type | Population | Per capita income | Median household income | Median family income |
| Clarksburg | CDP | 423 | $41,657 | $57,625 | $52,750 |
| Davis | City | 65,359 | $33,256 | $61,182 | $106,586 |
| Dunnigan | CDP | 1,043 | $23,883 | $61,597 | $87,778 |
| Esparto | CDP | 2,877 | $23,996 | $61,979 | $75,461 |
| Guinda | CDP | 450 | $32,398 | $115,278 | $119,196 |
| Knights Landing | CDP | 958 | $25,741 | $47,864 | $39,630 |
| Madison | CDP | 287 | $11,478 | $33,906 | $38,636 |
| Monument Hills | CDP | 1,512 | $48,180 | $137,273 | $138,523 |
| University of California, Davis | CDP | 6,805 | $7,138 | $26,053 | $26,875 |
| West Sacramento | City | 47,278 | $24,621 | $54,040 | $61,489 |
| Winters | City | 6,616 | $25,973 | $59,559 | $68,917 |
| Woodland | City | 55,229 | $26,416 | $56,859 | $67,784 |
| Yolo | CDP | 335 | $18,759 | $28,929 | $31,447 |

### 2010

The 2010 United States census reported that Yolo County had a population of 200,849. The racial makeup of Yolo County was 126,883 (63.2%) White, 5,208 (2.6%) African American, 2,214 (1.1%) Native American, 26,052 (13.0%) Asian, 910 (0.5%) Pacific Islander, 27,882 (13.9%) from other races, and 11,700 (5.8%) from two or more races. Hispanics or Latinos of any race were 60,953 persons (30.3%).
Population reported at 2010 United States census :
| The County | Total Population | White | African American | Native American | Asian | Pacific Islander | other races | two or more races | Hispanic or Latino (of any race) |
| Yolo County | 200,849 | 126,883 | 5,208 | 2,214 | 26,052 | 910 | 27,882 | 11,700 | 60,953 |
| Incorporated city | Total Population | White | African American | Native American | Asian | Pacific Islander | other races | two or more races | Hispanic or Latino (of any race) |
| Davis | 65,622 | 42,571 | 1,528 | 339 | 14,355 | 136 | 3,121 | 3,572 | 8,172 |
| West Sacramento | 48,744 | 29,521 | 2,344 | 798 | 5,106 | 534 | 6,709 | 3,732 | 15,282 |
| Winters | 6,624 | 4,635 | 43 | 56 | 63 | 7 | 1,488 | 332 | 3,469 |
| Woodland | 55,468 | 34,904 | 855 | 726 | 3,458 | 169 | 12,488 | 2,868 | 26,289 |
| Census-designated place | Total Population | White | African American | Native American | Asian | Pacific Islander | other races | two or more races | Hispanic or Latino (of any race) |
| Clarksburg | 418 | 339 | 2 | 2 | 16 | 1 | 37 | 21 | 109 |
| Dunnigan | 1,416 | 836 | 107 | 25 | 19 | 1 | 339 | 89 | 583 |
| Esparto | 3,108 | 1,855 | 45 | 50 | 129 | 6 | 904 | 119 | 1,538 |
| Guinda | 254 | 175 | 26 | 0 | 1 | 1 | 43 | 8 | 68 |
| Knights Landing | 995 | 560 | 4 | 10 | 7 | 0 | 338 | 76 | 644 |
| Madison | 503 | 224 | 1 | 8 | 3 | 3 | 235 | 29 | 384 |
| Monument Hills | 1,542 | 1,163 | 20 | 32 | 77 | 17 | 153 | 80 | 403 |
| University of California, Davis | 5,786 | 2,443 | 144 | 22 | 2,443 | 7 | 364 | 363 | 728 |
| Other unincorporated areas | Total Population | White | African American | Native American | Asian | Pacific Islander | other races | two or more races | Hispanic or Latino (of any race) |
| All others not CDPs (combined) | 10,369 | 7,657 | 89 | 146 | 375 | 28 | 1,663 | 411 | 3,284 |

### 2000

As of the census of 2000, 168,660 people, 59,375 households, and 37,465 families were residing in the county. The population density was 166 inhabitants per square mile (64/km$^2$). The 61,587 housing units had an average density of 61 per square mile (24/km$^2$). The racial makeup of the county was 67.7% White, 2.0% Black or African American, 1.2% Native American, 9.9% Asian, 0.3% Pacific Islander, 13.8% from other races, and 5.2% from two or more races. About 25.9% of the population were Hispanics or Latinos of any race. By acestry, 10.0% were of German, 6.6% English and 6.4% Irish descent according to Census 2000. About 68.5% spoke English, 19.5% Spanish, 2.1% Chinese or Mandarin, and 1.8% Russian as their first language.
Of the 59,375 households, 33.6% had children under 18 living with them, 47.6% were married couples living together, 11.1% had a female householder with no husband present, and 36.9% were not families. About 23.3% of all households were made up of individuals, and 7.3% had someone living alone who was 65 or older. The average household size was 2.71 and the average family size was 3.25.
In the county, the age distribution was 25.2% under 18, 18.3% from 18 to 24, 28.2% from 25 to 44, 18.9% from 45 to 64, and 9.4% who were 65 or older. The median age was 30 years. For every 100 females, there were 95.6 males. For every 100 females 18 and over, there were 92.2 males.
The median income for a household in the county was $40,769, and for a family was $51,623. Males had a median income of $38,022 versus $30,687 for females. The per capita income for the county was $19,365. About 9.5% of families and 18.4% of the population were below the poverty line, including 16.0% of those under 18 and 7.4% of those 65 or over.

## Education
### Public schools

The county's public schools are managed by the Yolo County Office of Education.

### Colleges and universities

* University of California, Davis
* Woodland Community College

## Communities
### Cities

* Davis
* West Sacramento
* Winters
* Woodland

### Census-designated places

* Brooks
* Clarksburg
* Dunnigan
* El Macero
* Esparto
* Guinda
* Knights Landing
* Madison
* Monument Hills
* Rumsey
* Tancred
* University of California-Davis
* Yolo

### Other unincorporated communities

* Capay
* Plainfield
* Zamora
* Ronda is a former settlement that was located on the Southern Pacific Railroad 9.5 miles (15 km) southeast of Dunnigan, at an elevation of 59 feet (18 m). It still appeared on maps as of 1915.

### Population ranking

The population ranking of the following table is based on the 2010 census of Yolo County.
† county seat
| Rank | City/town/etc. | Municipal type | Population (2010 Census) |
| 1 | Davis | City | 65,622 |
| 2 | † Woodland | City | 55,468 |
| 3 | West Sacramento | City | 48,744 |
| 4 | Winters | City | 6,624 |
| 5 | University of California Davis | CDP | 5,786 |
| 6 | Esparto | CDP | 3,108 |
| 7 | Monument Hills | CDP | 1,542 |
| 8 | Dunnigan | CDP | 1,416 |
| 9 | Knights Landing | CDP | 995 |
| 10 | Madison | CDP | 721 |
| 11 | Yolo | CDP | 450 |
| 12 | Clarksburg | CDP | 418 |
| 13 | Guinda | CDP | 254 |
| 14 | Rumsey Indian Rancheria | AIAN | 77 |