Council in 2011. The preservation plan offers guidelines for both commercial and residential structures in the community. The HPOZ does not cover the entire Jefferson Park neighborhood. The HPOZ is bounded by Adams Boulevard on the north, 7th Avenue on the west, Exposition Boulevard on the south (from Crenshaw Boulevard to Arlington Avenue), and Jefferson Boulevard on the south (from Arlington Avenue to Western Avenue). Street signs in the area have an additional sign to indicate that the street is part of the HPOZ area. Population A total of 23,130 people lived in the neighborhood's 1.42 square miles, according to the 2000 U.S. census—averaging 16,300 people per square mile, among the highest population density in the city as a whole. The median age was 31, about the same as the rest of the city. Within the neighborhood, African Americans made up 46.8% of the population, with Latinos 44.9%, Asian 2.9%, non-Hispanic Whites 2.7% and others 2.7%. Mexico and El Salvador were the most common places of birth for the 32.7% of the residents who were born abroad, considered an average percentage of foreign-born when compared with the city or county as a whole. The median household income in 2008 dollars was $32,654, considered low when compared with all city and county neighborhoods. The percentage of households earning $20,000 or less was high, compared to the county at large. The average household size of 2.8 people was about the same as the rest of the city. Renters occupied 69.5% of the housing units, and homeowners occupied the rest. In 2000, there were 1,365 families headed by single parents, or 26.6%, a rate that was high for the county and the city. Jefferson Park residents aged 25 and older holding a four-year degree amounted to 11.8% of the population in 2000, considered low when compared with the city and the county as a whole; the percentage of residents aged 25 and older with a high school diploma was also considered low. Education Schools within the Jefferson Park boundaries are: Joseph Pomeroy Widney High, LAUSD, special education, 2302 South Gramercy Place Mid City Magnet, LAUSD alternative, 3150 West Adams Boulevard Celerity Nascent Charter, LAUSD, 3417 West Jefferson Boulevard Sixth Avenue Elementary, LAUSD, 3109 Sixth Avenue Holy Name of Jesus Catholic Elementary, private, 1955 West Jefferson Boulevard. The school was founded in 1924 by families from New Orleans. It celebrates its Creole heritage with