Tract Historic District and Alvarado Terrace Historic District. In August 2012, the City of Los Angeles designated a portion of Vermont Avenue in Pico-Union as El Salvador Community Corridor; parts of Pico-Union are also being considered for designation as The Central American Historical District. The former First Church of Christ, Scientist, once one of Jim Jones' Peoples Temples, was located in Pico-Union, at the corner of Alvarado Street and Alvarado Terrace. Population Pico-Union is the fourth-most-dense neighborhood in Los Angeles, surpassed only by East Hollywood, Westlake and Koreatown. The 2000 U.S. census counted 42,324 residents in the 1.67-square-miles neighborhood—an average of 25,352 people per square mile. In 2008, the city estimated that the population had increased to 44,664. The median age for residents was 27, considered young for the city and the county. The ethnic breakdown in 2000 was: Latinos, 85.4%; Asians, 7.6%; whites, 3.0%, blacks, 2.9%; and others, 1.1%. El Salvador (44.4%) and Mexico (23.3%) were the most common places of birth for the 64.6% of the residents who were born abroad, a figure that was considered high in comparison with foreign-born in the city as a whole. Other immigrants come from Guatemala, Honduras and Nicaragua. The median household income in 2008 dollars was $26,424, considered low for both the city and the county. The percentage of households earning $20,000 or less was high, compared to the county at large. The average household size of 3.3 people was relatively high for Los Angeles. Renters occupied 90.5% of the housing units, and home- or apartment owners the rest. The percentages of never-married men (43.4%) and never-married women (36.2%) were among the county's highest. The census found 2,113 families headed by single parents, the 23.3% rate being considered high for both the city and the county. In 2000 there were 667 military veterans living in Pico-Union, or 2.3% of the population, considered a low rate for the city and the county overall. Education Pico-Union residents aged 25 and older holding a four-year degree amounted to 6.7% of the population in 2000, considered low for both the city and the county, and there was a high percentage of residents with less than a high school diploma. Schools These are the elementary or secondary schools within the neighborhood's boundaries: West Adams Preparatory High School, LAUSD, 1500 West Washington Boulevard SIATech Pico-Union is a public charter high school, 2140 West Olympic Boulevard suite 327.