Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.
ZIP code 93409 covers CA in San Luis Obispo County with a population of about 2,687.
At a glance, the area shows median age of 42.9 versus a U.S. median of about 38.9.
It sits in telephone area codes 805, 820; U.S. House district CA-24; the SANTABARBRA - SANMAR - SANLUOB media market.
On socioeconomic markers, US5 shows a 1.9% of adults with a bachelor’s degree or higher (about 31.8 points below the national share (33.7%)).
FEMA’s National Risk Index rates natural-hazard risk for CA as Relatively High (composite score 95.9), which is among the highest nationally. The strongest component scores on US5 are wildfire (98.3) and flood (96.7). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.
Climate normals for CA show limited published climate normals on US5.
IRS migration statistics show a net inflow of about 132 for ZIP 93409 (CA) on US5’s published series — a signal of people/tax filers moving in relative to those leaving. Inflows often track job growth, housing demand, or lifestyle migration; treat the figure as a directional indicator rather than a precise headcount.