ZIP Code 66031 — Gardner city, KS Demographics & Data

ZIP code 66031 covers Gardner, KS in Johnson County with a population of about 651.

At a glance, the area shows median age of 37.0 versus a U.S. median of about 38.9.

It sits in telephone area code 913; U.S. House district KS-3; the KANSAS CITY media market.

On socioeconomic markers, US5 shows a 2.2% of adults with a bachelor’s degree or higher (about 31.5 points below the national share (33.7%)).

FEMA’s National Risk Index rates natural-hazard risk for Gardner city, KS as Relatively High (composite score 94.8), which is among the highest nationally. The strongest component scores on US5 are flood (94.9) and wildfire (61.2). 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 Gardner city, KS show little to no average snow and around 37.5 inches of annual precipitation.

IRS migration statistics show a net inflow of about 36 for ZIP 66031 (Gardner city, KS) 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.