Population – Unofficial estimates place the combined population of the San Gabriel Valley at around 2 million -- roughly a fifth of the population of Los Angeles County

Larger than both Las Vegas, Nevada and the San Francisco metropolitan areas.

The average size of a household in the San Gabriel Valley according to the 2000 Census was 3.28 persons compared with 2.98 persons for Los Angeles County as a whole.

Eights cities in the Valley had average household sizes of over 4 persons, while an unincorporated area, the South San Jose Hills, recorded a hefty 5.07 persons per household.

At the other end of this scale was Sierra Madre at 2.20 persons per household and South Pasadena at 2.30.

In terms of age distribution, a larger share of the population was aged 10-19, 15.5% versus 14.8% for the County. Also, the Valley had a higher share of people over 45 years of age.

The income ranges in the San Gabriel Valley area are also quite wide. The highest median household income was found in San Marino ($117,267), followed by La Canada/Flintridge ($109,989), and Bradbury ($100,454). At the other end of the spectrum was El Monte with a median household income of $32,439