ZIP Code 91942 — La Mesa city, CA Demographics & Data

ZIP code 91942 covers La Mesa, CA in San Diego County with a population of about 40,920.

At a glance, the area shows median age of 37.5 (near the U.S. median).

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

Median household income in ZIP 91942 is about $81,262 — about 8% above the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 12.7%; unemployment rate near 6.7%; 38.2% of adults with a bachelor’s degree or higher (about 4.5 points above the national share (33.7%)).

Labor and commute patterns include leading industry context around Healthcare, Professional services, and Education; about 15.0% 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 $689,300 — about 98% above the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $1,812 (about 56% above the U.S. median rent ($1,163)), and owner-occupancy near 44.0% (about 21.4 points below the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 91942 in La Mesa, CA, a household would need roughly $190,000 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 $4,428. That is about 134% above the local median household income ($81,262), 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 La Mesa 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 La Mesa city, CA show little to no average snow and around 11.6 inches of annual precipitation.

IRS migration statistics show a net inflow of about 2,014 for ZIP 91942 (La Mesa 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.