El Prado has a post office, with the ZIP code 87529. The 87529 ZIP Code Tabulation Area had a population of 2,727 at the 2000 census.. El Prado ZCTA had 1,622 housing units; a land area of 18.89 sq. miles; a water area of 0 sq. miles; and a population density of 144.40 people per sq. mile at Census 2000.