Over the past decade, the population of zip code 91104 has fluctuated, reaching a peak of 38,381 in 2017 before declining to 34,830 in 2022. The median income has shown an overall upward trend, increasing from $82,632 in 2013 to $81,617 in 2022, with a notable spike to $92,898 in 2021.

Racial demographics in zip code 91104 have remained relatively stable, with some slight shifts. The Hispanic population increased marginally from 38% in 2013 to 39% in 2022, while the White population decreased slightly from 41% to 39% over the same period. The Asian population increased from 7% to 9%, and the Black population decreased from 11% to 6%.

The completion of LIHTC projects in 2012 and 2016 coincides with periods of population growth and rising median incomes, suggesting a proactive approach to maintaining affordable housing options in an increasingly affluent area.

Zip code 91104 in Pasadena has a small but significant LIHTC-funded affordable housing presence, with 89 units across two projects completed in the 2010s. These units represent a small percentage of the estimated housing inventory but provide crucial affordable options in an area that has experienced fluctuating population and generally rising median incomes over the past decade. The housing mix, predominantly one-bedroom units, appears to cater to the changing demographics of the area, including a diverse racial composition with notable Hispanic and White populations.