ZIP Code 92121 — San Diego city, CA Demographics & Data

ZIP code 92121 covers San Diego, CA in San Diego County with a population of about 4,157.

At a glance, the area shows median age of 32.7 versus a U.S. median of about 38.9.

It sits in telephone area codes 619, 858; U.S. House district CA-51; the SAN DIEGO media market.

San Diego, CA sits in a university / college context (near design institute of san diego (2.4 mi)). Expect stronger interest in student housing, rentals, walkability, transit, and a younger adult age mix versus typical suburban ZIPs.

Median household income in ZIP 92121 is about $135,795 — about 81% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 16.8%; unemployment rate near 4.8%; 74.9% of adults with a bachelor’s degree or higher (about 41.2 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Professional services, Manufacturing, and Healthcare; about 15.4% of workers reporting work-from-home (roughly in line with the U.S. share (15.2%)); a mean commute of about 180.0 minutes (U.S. average near 26.8).

Median home value is about $1,091,600 — about 214% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $2,397 (about 106% above the U.S. median rent ($1,163)), and owner-occupancy near 48.9% (about 16.5 points below the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 92121 in San Diego, CA, a household would need roughly $301,000 in annual income under a 20% down, 30-year loan at 6.8% (illustrative), keeping housing costs near 28% of income. Estimated monthly PITI is about $7,012. That is about 122% above the local median household income ($135,795), so the median earner would likely stretch or need a larger down payment. Rates, taxes, insurance, and HOA fees vary — treat this as a planning estimate, not a lender quote.

FEMA’s National Risk Index rates natural-hazard risk for San Diego city, CA as Very High (composite score 99.7), which is among the highest nationally. The strongest component scores on US5 are wildfire (100.0) and flood (99.7). 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 San Diego city, CA show little to no average snow and around 11.5 inches of annual precipitation.

IRS migration statistics show a net inflow of about 205 for ZIP 92121 (San Diego city, 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.