Koochiching County, Minnesota ZIP codes
12 ZIP codes are in Koochiching County, plus 3 that cross in from neighboring counties.
- ZIP codes
- 12
- Population in these ZIPs
- 12,235
- Avg. median income
- $66,600population-weighted
- Cities & towns
- 12
Click anywhere on the map to see which ZIP code it's in.
ZIP codes in Koochiching County
| ZIP code | City | Population | Median income | Typical home value |
|---|---|---|---|---|
| 55772 | Nett Lake | 77 | — | $157,100 |
| 56627 | Big Falls | 192 | $36,500 | $69,200 |
| 56629 | Birchdale | 224 | $90,938 | $212,100 |
| 56649 | International Falls | 8,825 | $64,736 | $159,800 |
| 56653 | Littlefork | 1,239 | $74,583 | $165,000 |
| 56654 | Loman | 109 | $51,250 | $254,200 |
| 56658 | Margie | 0 | — | — |
| 56660 | Mizpah | 193 | $64,464 | $152,200 |
| 56661 | Northome | 895 | $65,469 | $188,800 |
| 56668 | Ranier | 217 | $116,250 | $183,900 |
| 56669 | Kabetogama | 264 | $64,688 | $253,800 |
| 56679 PO Box | South International Falls | — | — | — |
ZIP codes partly in Koochiching County
These ZIP codes are mostly in a neighboring county but cover part of Koochiching County.
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 55771 | Orr | St. Louis County | 1,484 | $67,667 | $214,700 |
| 56623 | Baudette | Lake of the Woods County | 2,733 | $87,750 | $218,600 |
| 56639 | Effie | Itasca County | 359 | $30,625 | $180,200 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Cities and towns in Koochiching County
Nearby counties
Frequently asked questions
How many ZIP codes are in Koochiching County, Minnesota?
12 ZIP codes are mainly in Koochiching County, and 3 more ZIP codes from neighboring areas reach partly into it.
What cities are in Koochiching County?
ZIP codes in Koochiching County use the city names Big Falls, Birchdale, International Falls, Kabetogama, Littlefork, Loman, Margie, Mizpah, Nett Lake, Northome, Ranier and South International Falls.