According to the United States Census Bureau, the city has a total area of 153.5 km² (59.2 mi²). 152.3 km² (58.8 mi²) of it is land and 1.1 km² (0.4 mi²) of it is water. The total area is 0.74% water.
As of the census of 2000, there are 185,401 people, 56,330 households, and 41,120 families residing in the city. The population density is 1,217.2/km² (3,152.4/mi²). There are 63,535 housing units at an average density of 417.1/km² (1,080.3/mi²). The racial makeup of the city is 45.23% White, 16.41% African American, 1.40% Native American, 4.19% Asian, 0.37% Pacific Islander, 27.12% from other races, and 5.28% from two or more races. 47.48% of the population are Hispanic or Latino of any race.
There are 56,330 households out of which 44.1% have children under the age of 18 living with them, 44.9% are married couples living together, 21.1% have a female householder with no husband present, and 27.0% are non-families. 21.1% of all households are made up of individuals and 7.5% have someone living alone who is 65 years of age or older. The average household size is 3.19 and the average family size is 3.72.
In the city the population is spread out with 35.2% under the age of 18, 11.0% from 18 to 24, 29.6% from 25 to 44, 16.0% from 45 to 64, and 8.2% who are 65 years of age or older. The median age is 28 years. For every 100 females there are 96.7 males. For every 100 females age 18 and over, there are 92.2 males.
The median income for a household in the city is $31,140, and the median income for a family is $33,357. Males have a median income of $30,847 versus $25,782 for females. The per capita income for the city is $12,925. 27.6% of the population and 23.5% of families are below the poverty line. Out of the total people living in poverty, 36.2% are under the age of 18 and 11.4% are 65 or older.
1843 Rancho San Bernardino grant to Antonio Maria Lugo.
1852 Colonel Henry Washington erects survey monument on Mt. San Bernardino.
1854 San Bernardino incorporated as a city.
1880's Railroads arrive.
1886 San Bernardino reincorporated.
1926 San Bernardino Valley College built.