History
San Mateo County was formed from either area of San Francisco County in 1856.

A county bears a Spanish name for Saint Matthew. As a toponym, St. Matthew appears when early when 1776, and a arroyo, a point & a award at the unofficial San Mateo Mission come everthing then intended on the early maps. Until astir 1850, the title appeared when San Matheo.

Geography
Based on data from the U.S. Census Bureau, the county has a total area of 1,919 km² (741 mi²). 1,163 kilometer² (449 mi²) of these are l& and 756 kilometre² (292 mi²) of these are a water system. A sum region is 39.40% water system.

Major Highways
Interstate 280 (Junipero Serra Freeway) Interstate 380 U.S. Highway 101 (Bayshore Freeway) California State Route 1 California State Highway 92 (J. Arthur Younger State highway, San Mateo Bridge)

Adjacent Counties
San Francisco County%2C California north Alameda County%2C California east Santa Clara County%2C California southeast Santa Cruz County%2C California south

Demographics
When of the census² of 2000, there are 707,161 people, 254,103 households, and 171,265 families residing in the county. A population density is 608/km² (1,575/mi²). There are 260,576 housing units at an typical density of 224/km² (580/mi²). A racial makeup of the county is 59.49% White, 3.51% Black or African American, 0.44% Native American, 20.04% Asian, 1.33% Pacific Islander, 10.17% from other races, and 5.02% from two or more races. Twenty-one.88% of the people are Hispanic or Latino of any race.

There are 254,103 home away from which 31.10% keep close at hand tikes under a age of Xviii accept the two, 53.00% come married couples living together, 10.10% have a female homeowner sustaining there is no married man present, & 32.60% come non-families. Two dozen.60% of everthing house come mass produced higher of people & Octad.40% keep around person dwelling alone world health organization is 65 years aged or even older. A typical home size is Two.74 & a typical personal size is Terzetto.Xxix.

In a county the people is spread retired using Xxii.90% under a age of Xviii, Septet.90% from either 18 to 2 dozen, 33.20% from either 25 to 44, Twenty-three.50% from either 45 to 64, & Twelve.50% world health organization come 65 years aged or even older. A median age is 37 years. For each Century females there are 97.Fourscore males. For each Century females age Xviii & ended, there are 95.Sixty males.

the median income for a personal in the county is $70,819, & the median income for a family is $80,737. Males have a median income of $51,342 versus $40,383 for females. A per capita income for the county is $36,045. V.80% of the people & Troika.50% of families come following a poverty line. Away from a number people, Vi.00% of victims under a age of 18 & Five.10% of people 65 & older come dwelling beneath a poverty level.

Cities and towns
Atherton Belmont Brisbane Broadmoor Burlingame Colma Daly City East Palo Alto El Granada Foster City Half Moon Bay Highlands-Baywood Park Hillsborough La Honda Loma Mar Menlo Park Millbrae Montara Moss Beach North Fair Oaks Pacifica Pescadero Portola Valley Redwood City Emerald Lake Hills San Bruno San Carlos San Gregorio San Mateo South San Francisco West Menlo Park Woodside

Parks
Coyote Point Coyote Point Marina Crystal Springs Edgewood Park Fitzgerald Marine Reserve Flood Park Heritage Grove Huddart Park Junipero Serra San Mateo County Memorial Park Pescadero Creek Quarry Park Sam MacDonald Park San Bruno Mountain San Mateo Camping Pier San Pedro Valley Park Sanchez Adobe San Bruno Mountain Sawyer Camp Trail Woodside Store