ZIP Code 55609 — Knife River CDP, MN Demographics & Data

ZIP code 55609 covers Knife River, MN in Lake County with a population of about 118.

At a glance, the area shows median age of 87.4 versus a U.S. median of about 38.9.

It sits in telephone area code 218; U.S. House district MN-8; the DULUTH - SUPERIOR media market.

Knife River, MN reads as a military / base-oriented community on US5’s intent model (elevated veteran share (32.2%) and/or base-related place names). Service members and families often look up Basic Allowance for Housing (BAH) rates, on-base mail (PSC / P.O. Box) addresses, and nearby ZIP demographics when relocating.

US5 shows 2026 DoD BAH locality rates for this ZIP’s Military Housing Area on this page (pay grade × with/without dependents). Treat the table as a planning reference and confirm entitlement with your finance office or the official DTMO BAH lookup.

Median household income in ZIP 55609 is about $76,538 — about even with the U.S. median ($75,149).

On socioeconomic markers, US5 shows a poverty rate of 9.3%; unemployment rate near 100.0%; 32.2% of adults with a bachelor’s degree or higher (about 1.5 points below the national share (33.7%)).

Housing tenure and rents show owner-occupancy near 100.0% (about 34.6 points above the national owner-occupancy rate (65.4%)).

FEMA’s National Risk Index rates natural-hazard risk for Knife River CDP, MN as Very Low (composite score 33.9), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (62.3) and flood (29.8). 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 Knife River CDP, MN show little to no average snow and around 31.7 inches of annual precipitation.

IRS migration statistics show a net inflow of about 8 for ZIP 55609 (Knife River CDP, MN) 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.