ZIP Code 51031 — Le Mars city, IA Demographics & Data

ZIP code 51031 covers Le Mars, IA in Plymouth County with a population of about 12,785.

At a glance, the area shows median age of 39.0 (near the U.S. median).

It sits in telephone area code 712; U.S. House district IA-4; the SIOUX CITY media market.

Le Mars, IA is tagged as a Tribal Nation community context (place names indicate a tribal nation community). Local search often includes tribal government offices, public safety, and Indian Health Service (IHS) / wellness topics alongside standard ZIP demographics.

Median household income in ZIP 51031 is about $74,978 — about even with the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 8.1%; unemployment rate near 1.5%; 24.8% of adults with a bachelor’s degree or higher (about 8.9 points below the national share (33.7%)).

Labor and commute patterns include leading industry context around Manufacturing, Healthcare, and Retail trade; about 4.7% of workers reporting work-from-home (about 10.5 points below 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 $208,900 — about 40% below the U.S. median home value ($348,079).

Housing tenure and rents show median gross rent around $721 (about 38% below the U.S. median rent ($1,163)), and owner-occupancy near 65.8% (roughly in line with the national owner-occupancy rate (65.4%)).

To comfortably buy a median-priced home in ZIP 51031 in Le Mars, IA, a household would need roughly $58,000 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 $1,342. That sits below the local median household income ($74,978), suggesting the typical household income is closer to a workable buy-in level under these assumptions. 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 Le Mars city, IA as Relatively Low (composite score 49.2), which is near the middle of the national distribution. The strongest component scores on US5 are wildfire (70.5) and flood (45.2). 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 Le Mars city, IA show little to no average snow and around 30.0 inches of annual precipitation.

IRS migration statistics show a net inflow of about 733 for ZIP 51031 (Le Mars city, IA) 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.