The zip code 35645 in Killen, Alabama, is classified as a "Low Diversity" area with a "White Majority" as of 2022. The racial composition indicates that 91% of the population identifies as white, with minimal representation from other racial groups. The median household income in 2022 was $77,320, exceeding the national median and suggesting a relatively affluent community.

Over the past decade, this zip code has maintained its "Low Diversity" status with a strong "White Majority." However, subtle indications of a slowly emerging "Transitional Community" are present. From 2013 to 2022, the white population experienced a slight decrease from 93% to 91%. Concurrently, there has been a small increase in other racial groups. The Black population increased from 2% to 3% between 2013 and 2020, settling at 2% by 2022. The Hispanic population grew from less than 1% in 2013 to 3% by 2022. The "Two or More Races" category emerged, growing from 0% in 2015 to 3% by 2022. These changes suggest a gradual trend towards increased diversity, albeit at a slow pace.

The economic landscape of the zip code has shown significant improvement over the decade. Median income rose from $60,044 in 2013 to $77,320 in 2022, an increase of about 29%. A notable jump in median income occurred between 2019 ($67,013) and 2020 ($77,014), coinciding with a slight increase in racial diversity. The population has remained relatively stable, fluctuating between about 12,200 and 13,500 over the decade. The rising median income suggests economic growth in the area, which may be attracting a more diverse population, albeit slowly. The stability in population numbers indicates that this growth is not driven by a large influx of new residents but potentially by economic improvements for existing residents and gradual demographic shifts.