PlainZIP

Iron, MN · standard

ZIP Code 55751

St. Louis County, Minnesota - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

1,553
10/sq mi
$75,200
Median income
$202,400
Median home value
15.5%
Bachelor's or higher

The verdict

Iron pairs an above-median household income with below-median home values, in a rural, homeowner-dominated area.

Top 45%
household income, US ZIPs
44th pct
home value, US ZIPs
10
people per sq mi
95%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 55751 against every reporting US ZIP.

ZIP code 55751 covers 158.5 square miles in Iron, St. Louis County, Minnesota (a standard USPS delivery area), with a modest 1,553 residents on file, a density of 10 people per square mile, in the Chicago time zone.

ZIP 55751 lands in the middle-income range, with a median household income of $75,200 (8% below the Minnesota average), while per-capita income is $38,080. Poverty here runs at 5.7%, with unemployment measured at 5.7%. Median home value sits at $202,400 (21% below the state average), median rent at $700 a month, and owner-occupancy at 94.8%.

Educational attainment sits below the national norm: 15.5% of adults hold a bachelor's degree or higher, the median age is 49.9, and the average commute is -. A geography-based comparison follows: 4 ZIP codes within about 10 miles of 55751, plus 6 more within St. Louis County, give a clearer read than the national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 55751, Iron, MN · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

1,553

Population

158.5

Area (sq mi)

10

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 55751?

49.9

Median Age

51.0%

Male

49.0%

Female

0.6%

Foreign-Born

White 95.0%
African American 0.4%
Asian 0.2%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 4.2%
Hispanic or Latino 1.8%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$75,200

Median Household Income

-8% vs state

$38,080

Per Capita Income

5.7%

Poverty Rate

5.7%

Unemployment Rate

How ZIP 55751 ranks nationally

Iron, MN household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$75,200 Top 45% higher than 55% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 43.8%
Bachelor's Degree or Higher 15.5%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

681

Total Housing Units

612

Occupied Units

69

Vacant Units

2.27

Avg Household Size

Occupancy Type

Owner 94.8%
Renter 5.2%

$202,400

Median Home Value

-21% vs state

$700

Median Rent

1976

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What businesses operate in this ZIP?

Census Bureau data shows 14 business establishments in ZIP 55751, employing approximately 57 people with a combined annual payroll of $3,954,000.

14

Businesses

57

Employees

$4.0M

Annual Payroll

1

Industry Sectors

Industry Establishments % of Total
Retail trade 3 21.4%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 55751 vs 55768 →

ZIP 55751 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 55751 ranks #2 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 55751 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 55751 ranks #3 of 5 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
55768 Mountain Iron, MN 2,843 6.2 mi
55738 Forbes, MN 544 8.6 mi
55758 Kinney, MN 145 8.2 mi
55713 Buhl, MN 1,017 8.1 mi

More ZIP Codes in St. Louis County

55811 standard
Duluth, MN
Pop: 26,246
55803 standard
Duluth, MN
Pop: 17,431
55746 standard
Hibbing, MN
Pop: 17,228
55804 standard
Duluth, MN
Pop: 14,592
55812 standard
Duluth, MN
Pop: 10,924
55805 standard
Duluth, MN
Pop: 10,194

Related Areas

St. Louis County Iron, MN Minnesota

Frequently Asked Questions

What county is ZIP code 55751 in? ▼
ZIP code 55751 (Iron) is located in St. Louis County, Minnesota. St. Louis County contains multiple ZIP codes, see the full list at /counties/st-louis-mn.
What is the population of ZIP code 55751? ▼
ZIP code 55751 in Iron, MN has a population of 1,553 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 55751? ▼
The median household income in ZIP 55751 is $75,200, which is 1% below the national average of $76,288.
What is the average home value in ZIP 55751? ▼
The median home value in ZIP 55751 is $202,400, which is 27% below the national average of $278,155.
What is the demographic makeup of ZIP 55751? ▼
The largest racial group in ZIP 55751 is White at 95.0%. Hispanic or Latino residents make up 1.8% of the population.
How many businesses are in ZIP code 55751? ▼
ZIP code 55751 has 14 business establishments employing approximately 57 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What is the education level in ZIP code 55751? ▼
In ZIP code 55751, 43.8% of residents aged 25+ have a high school diploma or higher, and 15.5% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 55751? ▼
In ZIP code 55751, approximately 94.8% of occupied housing units are owner-occupied and 5.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 55751? ▼
The poverty rate in ZIP code 55751 is 5.7% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.