ZIP code 56731
Where is ZIP code 56731?
Humboldt, Minnesota
Kittson County · PO Box only ZIP code
ZIP code 56731 belongs to Humboldt, Minnesota in Kittson County. 56731 is a PO Box only ZIP code: it is used for post office boxes at the Humboldt post office, not for street addresses. It is in the Central Time zone and uses area code 218. About 137 people live in the 56731 area, where the median household income is $75,125. The closest ZIP codes are 56755 (Saint Vincent, 3.9 mi northwest), 56740 (Noyes, 7.3 mi northwest) and 58271 (Pembina, 9.9 mi southwest).
| ZIP code | 56731 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Humboldt |
| State | Minnesota (MN) |
| County | Kittson County |
| Time zone | Central Time · now |
| Area code | 218 |
| Coordinates | 48.9211, -97.0934 map |
| 3-digit prefix | 567 |
Population and income in 56731
| Population | 137 · lower than 96% of Minnesota ZIP codes |
|---|---|
| People per square mile | 4 · lower than 93% of Minnesota ZIP codes |
| Median age | 52.1 years · higher than 86% of Minnesota ZIP codes |
| Men / women | 34% / 66% |
| Median household income | $75,125 · lower than 55% of Minnesota ZIP codes |
| Income per person | $29,550 |
| Below the poverty line | 14% |
| Bachelor’s degree or higher | 21% of adults 25+ |
| Median home value | $148,200 · lower than 86% of Minnesota ZIP codes |
| Housing units | 66 |
| Households | 63 (2.17 people on average) |
| Owners / renters | 100% / 0.0% |
| Land area | 38.46 sq mi (plus 0.01 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 56731. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 56731
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 56755 | Saint Vincent, MN | 3.9 mi NW | Standard |
| 56740 | Noyes, MN | 7.3 mi NW | Standard |
| 58271 | Pembina, ND | 9.9 mi SW | Standard |
| 56728 | Hallock, MN | 12.2 mi SE | Standard |
| 58216 | Bathgate, ND | 18.1 mi W | Standard |
| 58238 | Hamilton, ND | 19.2 mi SW | Standard |
| 56735 | Lancaster, MN | 20.7 mi E | Standard |
| 56733 | Kennedy, MN | 20.7 mi S | Standard |
| 58265 | Neche, ND | 20.8 mi W | Standard |
| 58236 | Glasston, ND | 22 mi SW | Standard |
| 58225 | Drayton, ND | 22.2 mi S | Standard |
| 56734 | Lake Bronson, MN | 22.7 mi SE | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 56731 or measure the distance to another ZIP code.
How to address mail to 56731
PO BOX 123
HUMBOLDT MN 56731
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (56731-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 56731?
- 56731 is a Humboldt, Minnesota ZIP code.
- What county is 56731 in?
- ZIP code 56731 is in Kittson County, Minnesota.
- What time zone is ZIP code 56731 in?
- 56731 is in the Central Time zone (America/Chicago).
- What area code is 56731?
- Phone numbers in ZIP code 56731 use area code 218.
- What is the population of ZIP code 56731?
- About 137 people live in ZIP code 56731, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 56731?
- The median household income in 56731 is $75,125 a year, lower than 55% of Minnesota ZIP codes.
- Can I use 56731 for a street address?
- No. 56731 is only for PO Boxes. Street addresses in Humboldt use another ZIP code.
- What ZIP codes are near 56731?
- The nearest ZIP codes to 56731 are 56755 (Saint Vincent, 3.9 miles), 56740 (Noyes, 7.3 miles), 58271 (Pembina, 9.9 miles) and 56728 (Hallock, 12.2 miles).