Polk County, MN ZIP Codes
19 ZIP codes cover all or part of Polk County, Minnesota. The Census Bureau counts 30,705 residents in the county, with a median household income of $73,107 and a median home value of $222,800. Median household income ranges from $59,706 in 56542 to $83,646 in 56540. Its largest communities include East Grand Forks, Crookston, Warren, Fosston and McIntosh.
Polk County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 30,705 |
| Households | 12,360 |
| Median household income | $73,107 |
| Median home value | $222,800 |
| Median age | 39.8 |
| Median rent | $855 |
All 19 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 34,507 |
| Households (sum of ZIP codes) | 13,911 |
| Median household income, range across ZIP codes | $59,706 (56542) to $83,646 (56540) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $69,757 |
| Homeowners | 71.9% |
| Households with kids under 18 | 29.3% |
| Moved in the past year | 10.6% |
| Carrier routes in EDDM2GO's route library | 33 routes, 8,710 homes (13 of 19 ZIP codes) |
Top facts
- Highest median household income in Polk County: 56540 ($83,646)
- Most residents: 56721 (10,679 people)
- Highest homeownership: 56540 (83.4% own their home)
- Most households with kids: 56721 (34.3% of households)
- Most new movers: 56556 (18.3% moved in last year)
- Youngest median age: 56556 (32.0 years)
- Highest median home value: 56721 ($259,300)
Every ZIP code in Polk County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 56721 | East Grand Forks | 10,679 | 4,067 | $82,525 | $259,300 | 72.2% | 34.3% | 10.4% | — | — | 100% of its land |
| 56716 | Crookston | 8,903 | 3,881 | $59,744 | $196,100 | 61.9% | 25.9% | 11.9% | 9 | 4,001 | 99% of its land |
| 56542 | Fosston | 2,486 | 1,034 | $59,706 | $186,300 | 68.2% | 27.0% | 13.8% | 4 | 1,244 | 80% of its land |
| 56762 | Warren | 2,433 | 1,017 | $62,933 | $160,100 | 72.3% | 30.4% | 9.5% | 5 | 1,248 | 52% of its land |
| 56540 | Fertile | 1,891 | 735 | $83,646 | $194,800 | 83.4% | 29.3% | 8.0% | 2 | 825 | 73% of its land |
| 56556 | Mcintosh | 1,312 | 460 | $61,786 | $150,600 | 69.8% | 28.5% | 18.3% | 2 | 434 | 100% of its land |
| 56535 | Erskine | 1,307 | 539 | $65,536 | $233,600 | 72.7% | 24.3% | 6.6% | — | — | 87% of its land |
| 56723 | Fisher | 838 | 322 | $106,250 | $225,000 | 84.2% | 32.0% | 7.1% | — | — | 100% of its land |
| 56736 | Mentor | 687 | 306 | $95,000 | $417,100 | 90.8% | 17.0% | 12.2% | 2 | 505 | 84% of its land |
| 56651 | Lengby | 667 | 247 | $80,750 | $190,800 | 92.7% | 28.3% | 8.5% | — | — | 18% of its land |
| 56744 | Oslo | 571 | 249 | $81,750 | $133,800 | 82.7% | 28.5% | 7.9% | 2 | 185 | 24% of its land |
| 56592 | Winger | 550 | 176 | $59,167 | $140,900 | 81.8% | 36.4% | 9.9% | 1 | 153 | 90% of its land |
| 56710 | Alvarado | 483 | 188 | $68,000 | $139,400 | 81.4% | 33.0% | 11.6% | 1 | 125 | 19% of its land |
| 56523 | Climax | 382 | 167 | $56,685 | $147,000 | 80.8% | 31.7% | 6.1% | — | — | 100% of its land |
| 56722 | Euclid | 377 | 143 | $94,375 | $217,100 | 98.6% | 24.5% | 2.9% | 1 | 143 | 100% of its land |
| 56684 | Trail | 280 | 103 | $73,750 | $138,800 | 98.1% | 29.1% | 1.8% | 2 | 167 | 62% of its land |
| 56646 | Gully | 266 | 133 | $48,750 | $205,300 | 75.2% | 22.6% | 5.3% | 1 | 131 | 92% of its land |
| 56517 | Beltrami | 255 | 94 | $92,500 | $167,700 | 91.5% | 37.2% | 4.3% | — | — | 96% of its land |
| 56568 | Nielsville | 140 | 50 | $40,000 | $94,000 | 96.0% | 20.0% | 2.9% | 1 | 47 | 93% of its land |
A ZIP code is listed for Polk County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- East Grand Forks — 9,028 residents · 1 ZIP code
- Crookston — 7,344 residents · 1 ZIP code
- Warren — 1,680 residents · 1 ZIP code
- Fosston — 1,374 residents · 1 ZIP code
- McIntosh — 847 residents · 1 ZIP code
- Fertile — 803 residents · 1 ZIP code
- Erskine — 427 residents · 1 ZIP code
- Fisher — 396 residents · 1 ZIP code
- Climax — 209 residents · 1 ZIP code
- Winger — 157 residents · 1 ZIP code
- Mentor — 131 residents · 1 ZIP code
- Nielsville — 102 residents · 1 ZIP code
- Beltrami — 72 residents · 1 ZIP code
- Gully — 53 residents · 1 ZIP code
- Trail — 16 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Polk County — 7 ZIP codes ranked
- ZIP codes with the highest home values in Polk County — 7 ZIP codes ranked
- ZIP codes with the highest homeownership in Polk County — 7 ZIP codes ranked
- ZIP codes with the most families with kids in Polk County — 7 ZIP codes ranked
- ZIP codes with the most new movers in Polk County — 7 ZIP codes ranked
- Youngest ZIP codes in Polk County — 7 ZIP codes ranked
- Oldest ZIP codes in Polk County — 7 ZIP codes ranked
- Fastest-growing ZIP codes in Polk County — 7 ZIP codes ranked
Price a mailing to Polk County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Polk County, MN?
- 56721, 56716, 56542, 56762, 56540, 56556, 56535, 56723, 56736, 56651, 56744, 56592, 56710, 56523, 56722, 56684, 56646, 56517 and 56568. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Polk County?
- 30,705 residents in 12,360 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Polk County?
- $73,107 for the county as a whole. Its ZIP codes range from $59,706 (56542) to $83,646 (56540).
- Which Polk County ZIP code has the highest median household income?
- 56540, at $83,646, among ZIP codes with at least 1,000 residents. See the full ranking of Polk County ZIP codes by income.
- How many carrier routes and mailboxes are in Polk County?
- For the 13 of 19 ZIP codes in EDDM2GO's stored route library: 33 carrier routes reaching 8,710 residential and 502 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.