Population 186 · Census ACS 2020–24
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Population and households in Iron Mountain
Household size in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 2.51 | 2.49 | 2.68 |
| 2010–14 | 2.54 | 2.52 | 2.73 |
| 2015–19 | 2.42 | 2.50 | 2.71 |
| 2020–24 | 2.38 | 2.49 | 2.65 |
| Change | −0.14 | −0.00 | −0.03 |
Households in Iron Mountain are small: just 2.38 people on average, compared with 2.65 nationally. That is typical of places where many people live alone or as couples, and fewer have children at home. Household size has dropped from 2.51 in 2006–10, but in a place this small, survey estimates can swing a lot from one release to the next.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 44.3 | 38.4 | 37.7 |
| 2010–14 | 43.7 | 39.2 | 38.6 |
| 2015–19 | 51.0 | 40.0 | 39.6 |
| 2020–24 | 47.4 | 40.1 | 40.1 |
| Change | +3.1 | +1.7 | +2.3 |
Iron Mountain skews older: half of its residents are older than 47.4, well above the national median of 40.1. That usually means more empty nesters and retirees, and fewer young families.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 9.8% | 11.3% | 12.3% |
| 2010–14 | 7.2% | 11.4% | 12.3% |
| 2015–19 | 5.6% | 10.9% | 11.6% |
| 2020–24 | 14.7% | 11.0% | 11.6% |
| Change | +4.9 pts | −0.3 pts | −0.6 pts |
Single parents head about one in seven households in Iron Mountain (14.7%), well above the national share of 11.6%.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Iron Mountain
Renters in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 14.9% | 30.0% | 33.3% |
| 2010–14 | 13.5% | 32.1% | 35.6% |
| 2015–19 | 20.5% | 33.2% | 36.0% |
| 2020–24 | 25.7% | 31.9% | 34.8% |
| Change | +10.8 pts | +1.9 pts | +1.5 pts |
Most households in Iron Mountain own their homes; 25.7% rent, below the national share of 34.8%. More than half of owners (55.3%) have paid off their mortgages, well above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 16.7% | 11.6% | 11.4% |
| 2010–14 | 16.1% | 12.0% | 11.4% |
| 2015–19 | 25.6% | 12.2% | 11.1% |
| 2020–24 | 13.6% | 10.5% | 9.6% |
| Change | −3.0 pts | −1.1 pts | −1.8 pts |
Vacancy is high in Iron Mountain: 13.6% of homes are empty, far above the national rate of 9.6%. In resort and lake areas that usually means seasonal and vacation homes; elsewhere it can point to weak demand.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 1976 | 1974 | 1974 |
| 2010–14 | 1979 | 1975 | 1975 |
| 2015–19 | 1980 | 1976 | 1977 |
| 2020–24 | 1983 | 1978 | 1980 |
| Change | +7 | +4 | +6 |
Homes in Iron Mountain are about the same age as the nation's housing: the median home was built in 1983, versus 1980 nationally. Homes here are newer than in Missouri overall, where the median home dates to 1978.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | $493 | $740 | $965 |
| 2010–14 | $567 | $816 | $1,040 |
| 2015–19 | $583 | $899 | $1,213 |
| 2020–24 | $822 | $1,122 | $1,571 |
| Change | +$330 | +$383 | +$606 |
Rent in Iron Mountain runs $822 a month at the median, utilities included, well below the U.S. median of $1,571. Rent takes 29.7% of the typical renter's income, just under the 30% mark often used to define affordable rent.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Iron Mountain
Bachelor's degrees in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 6.0% | 26.0% | 28.4% |
| 2010–14 | 12.1% | 27.3% | 29.6% |
| 2015–19 | 6.7% | 29.6% | 32.1% |
| 2020–24 | 17.0% | 32.6% | 35.6% |
| Change | +10.9 pts | +6.6 pts | +7.2 pts |
Fewer adults in Iron Mountain have a four-year degree than in the country as a whole: 17.0%, against 35.6% nationally.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 72.2% | 86.8% | 84.9% |
| 2010–14 | 79.7% | 88.3% | 86.1% |
| 2015–19 | 79.5% | 90.0% | 87.7% |
| 2020–24 | 83.2% | 91.8% | 89.3% |
| Change | +11.0 pts | +5.1 pts | +4.3 pts |
About one in six adults in Iron Mountain never finished high school, well above the national share: only 83.2% have a diploma or equivalent, against 89.3% nationally.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Iron Mountain
| Period | Iron Mountain | Missouri | U.S. |
|---|---|---|---|
| 2006–10 | 12.5% | 7.4% | 8.1% |
| 2010–14 | 11.1% | 8.4% | 9.4% |
| 2015–19 | 5.2% | 4.6% | 5.6% |
| 2020–24 | 2.0% | 4.1% | 5.4% |
| Change | −10.5 pts | −3.3 pts | −2.7 pts |
Unemployment in Iron Mountain has been low: just 2.0% of the labor force was out of work and looking, well below the national rate of 5.4%. Each figure pools five years of surveys (2020–24), so it describes that whole stretch rather than today's job market.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Iron Mountain compared with nearby cities
| City | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Iron Mountain | 2.38 | 47.4 | 14.7% | 25.7% | 13.6% | 1983 | $822 | 17.0% | 83.2% | 2.0% |
| Iron Mountain Lake | 2.39 | 51.6 | 13.1% | 14.1% | 22.2% | 1966 | $695 | 4.2% | 63.6% | 1.2% |
| Bismarck | 2.57 | 39.6 | 16.1% | 31.4% | 11.0% | 1977 | $665 | 17.6% | 80.8% | 7.8% |
| Pilot Knob | 1.98 | 50.4 | 12.0% | 26.7% | 10.3% | 1969 | $639 | 8.7% | 82.5% | 3.5% |
| Snow Hollow Lake | 2.39 | 43.5 | 17.5% | 34.1% | 11.4% | 1980 | $701 | 9.8% | 83.3% | 1.1% |
| Roselle | 3.07 | 39.3 | 8.6% | 13.8% | 30.6% | 1976 | $645 | 12.3% | 85.0% | 5.8% |
| Middle Brook | 2.31 | 46.5 | 14.5% | 28.8% | 13.5% | 1979 | $740 | 13.0% | 84.1% | 2.5% |
| Belleview | 2.40 | 44.8 | 16.0% | 29.3% | 11.3% | 1988 | $877 | 20.1% | 88.1% | 2.5% |
| Ironton | 2.65 | 37.6 | 13.8% | 27.2% | 18.2% | 1970 | $674 | 24.5% | 87.1% | 2.5% |
| Caledonia | 2.02 | 52.3 | 9.6% | 23.1% | 13.7% | 1977 | $645 | 14.5% | 86.9% | 0.9% |
| Irondale | 2.56 | 47.2 | 14.8% | 15.3% | 8.7% | 1983 | $850 | 15.3% | 85.1% | 3.8% |
All figures 2020–24.
Cities with similar populations: Gin City, AR · Swengel, PA · Sweet Grass, MT · Swanington, IN · Swan River, MN · Suttons Corner, GA · Steel City, IL · Harlem, LA · Golden Gate, IL · Gobler, MO
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Iron Mountain. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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