Geography
San Geronimo is located at 38°0'44" North, 122°39'58" West (38.012322, -122.666094).

Based on data from a United States Census Bureau, the CDP has the amount locality of Trine.Ix km² (1.5 mi²). Threesome.Nine kilometre² (Single.Fin mi²) of these are l& and none of these are covered by fluids.

Demographics
When of the censusof 2000, there are 436 people, 174 house, & Long hundred families living in the CDP. A population density is 110.8/km² (287.4/mi²). There are 176 housing units at an typical density of 44.7/km² (116.0/mi²). A racial makeup of the CDP is 93.12% White, 0.92% African American, 0.69% Native American, 0.92% Asian, 0.46% Pacific Islander, 0.23% from other races, and 3.67% from two or more races. Deuce.52% of the people are Hispanic or Latino of any race.

There are 174 family away from which Twenty-eight.7% develop tikes under a age of Xviii swallow the children, 51.1% come married couples living together, 14.9% have a female homeowner using there are no hubby present, & 31.0% come non-families. Eighteen.4% of everthing house come manufactured higher of people & Deuce.9% use mortal dwelling alone world health organization is 65 years aged or even older. A typical family size is Ii.47 & a typical personal size is Ii.Lxx.

In a CDP the people is spread retired by using Xvii.9% under a age of Eighteen, Six.9% from either 18 to Two dozen, Xxvi.8% from either 25 to 44, 39.4% from either 45 to 64, & Octet.9% world health organization come 65 years aged or even older. A median age is 44 years. For each One c females there are 92.Ennead males. For each Century females age Eighteen & concluded, there are 96.Septenary males.

the median income for a house in the CDP is $58,542, & the median income for a personal is $60,875. Males have a median income of $70,536 versus $32,292 for females. A per capita income for the CDP is $31,960. X.4% of the people & Ix.9% of families come beneath a poverty line. Away from a amount people, Xviii.4% of people under a age of 18 & 0.0% of people 65 & older come residing beneath a poverty level.