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ZIP Code 55804
Knife River, MN, St. Louis County
Population
15,922
Land area
94sq mi
People per sq mi
169
City
Knife River
ZIP 55804 and nearby ZIP codes
ZIP 55804 at a glance
- ZIP 55804 (Knife River) is about 2.3 times as dense as Minnesota as a whole.
- The median household income is $111,228, 25% above the Minnesota median of $89,062.
- A typical owner-occupied home is valued at $315,300 (4% below Minnesota) and median rent is $1,435 a month.
Local data for ZIP 55804
Counts from official public data
Housing and community stats
ZIP 55804, American Community Survey 2020-2024
Median household income
$111,228
Poverty rate
6.3%
Median home value
$315,300
Prices +4.5% in a year
Median rent
$1,435/mo
Homeownership
86.7%
Bachelor's or higher
52.6%
Median age
40.9
Average commute
22.1 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
225
ZIP Business Patterns 2023
Employees
1,760
$73.5M annual payroll
PPP loans
$10.4M
245 loans
Campaign donations
$151K
26% D, 30% R, 2026 cycle
Environment and hazard risk
ZIP 55804, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: cold wave
Storm events since 1996
2,085
Countywide, mostly thunderstorm wind
Flood insurance policies
290
0.3% of homes, county
July high / Jan low
77° / -2°F
30.7 inches of rain a year
Health statistics
Share of adults in ZIP 55804, CDC PLACES estimates
Obesity
32.7%
U.S. 33.3% -0.6 pts
Diabetes
9.6%
U.S. 12.1% -2.5 pts
Smoking
11.5%
U.S. 12.8% -1.3 pts
Uninsured (18-64)
4.9%
U.S. 11.1% -6.2 pts
Frequently asked questions
- What city is ZIP code 55804?
- ZIP code 55804 is in Knife River, MN (St. Louis County).
- What county is ZIP code 55804 in?
- ZIP code 55804 is mostly in St. Louis County, Minnesota.
- How many people live in ZIP code 55804?
- About 15,922 people live in the 55804 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.