From a total population of 58,680, National City has a median age of 31.9. The average age of males, in National City, is 29.3 while the average age of females is 35.6. When you compare this to median age of California, National City is 3.7 years younger.
The median income of individuals, in National City, is $17,143 while the average household income is $39,517. When comparing the median income of people living in National City to the rest of California, the average income in National City is $12,763 less.