Population 197 · Census ACS 2020–24
Choose a measure to map it.Tap a measure to map it. Swipe the row for more. Arrows show the change since 2006–10.
Median age by neighborhoodHistory and comparison ↓︎
Younger residents
Older residents
Colorblind friendly
off
More maps of Marietta: Best Neighborhoods · Walk Grade · Household income · Home prices · Race · Politics · Traffic noise · Internet
Population and households in Marietta
Household size in Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 2.34 | 2.44 | 2.68 |
| 2010–14 | 2.44 | 2.45 | 2.73 |
| 2015–19 | 2.37 | 2.43 | 2.71 |
| 2020–24 | 2.46 | 2.43 | 2.65 |
| Change | +0.13 | −0.01 | −0.03 |
The average household in Marietta has 2.46 people, under the U.S. average of 2.65. That is in line with the rest of Iowa. Household size has climbed from 2.34 in 2006–10, but in a place this small, much of that may be survey noise rather than real change.
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 Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 48.4 | 38.8 | 37.7 |
| 2010–14 | 49.9 | 39.3 | 38.6 |
| 2015–19 | 50.2 | 39.7 | 39.6 |
| 2020–24 | 48.0 | 39.8 | 40.1 |
| Change | −0.4 | +1.0 | +2.3 |
Marietta skews older: half of its residents are older than 48.0, 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 Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 3.3% | 9.5% | 12.3% |
| 2010–14 | 9.7% | 9.9% | 12.3% |
| 2015–19 | 5.3% | 10.0% | 11.6% |
| 2020–24 | 12.6% | 10.0% | 11.6% |
| Change | +9.3 pts | +0.6 pts | −0.6 pts |
Single parents head about one in eight households in Marietta (12.6%), close to the national share of 11.6%. Single parents are more common here than in Iowa as a whole (10.0%).
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 Marietta
Renters in Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 18.7% | 26.8% | 33.3% |
| 2010–14 | 10.9% | 28.2% | 35.6% |
| 2015–19 | 15.4% | 28.9% | 36.0% |
| 2020–24 | 12.5% | 28.3% | 34.8% |
| Change | −6.3 pts | +1.5 pts | +1.5 pts |
Only 12.5% of households in Marietta rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. Among homeowners, 52.2% have no mortgage at all, 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 Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 10.7% | 8.7% | 11.4% |
| 2010–14 | 10.4% | 8.6% | 11.4% |
| 2015–19 | 5.6% | 9.4% | 11.1% |
| 2020–24 | 15.5% | 8.8% | 9.6% |
| Change | +4.8 pts | +0.1 pts | −1.8 pts |
Vacancy is high in Marietta: 15.5% 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 Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 1948 | 1965 | 1974 |
| 2010–14 | 1948 | 1967 | 1975 |
| 2015–19 | 1960 | 1969 | 1977 |
| 2020–24 | 1944 | 1971 | 1980 |
| Change | −3 | +6 | +6 |
Marietta is a place of older homes: half were built before 1944, while the national median is 1980. That means established neighborhoods, and more houses that may need updating.
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 Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | $592 | $669 | $965 |
| 2010–14 | $802 | $732 | $1,040 |
| 2015–19 | $636 | $821 | $1,213 |
| 2020–24 | $927 | $1,020 | $1,571 |
| Change | +$336 | +$351 | +$606 |
The median renter in Marietta pays $927 a month for rent and utilities, well below the national median of $1,571. Rent takes 42.6% of the typical renter's income, well over the 30% mark often used to define affordable rent, so many renters here are stretched.
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 Marietta
Bachelor's degrees in Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 14.6% | 26.5% | 28.4% |
| 2010–14 | 17.7% | 27.9% | 29.6% |
| 2015–19 | 16.3% | 29.3% | 32.1% |
| 2020–24 | 19.2% | 32.3% | 35.6% |
| Change | +4.6 pts | +5.8 pts | +7.2 pts |
College degrees are relatively uncommon in Marietta: 19.2% of adults 25 and older hold a bachelor's or higher, well below the national share of 35.6%.
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 Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 87.7% | 90.4% | 84.9% |
| 2010–14 | 90.0% | 91.4% | 86.1% |
| 2015–19 | 87.5% | 92.1% | 87.7% |
| 2020–24 | 96.9% | 93.0% | 89.3% |
| Change | +9.2 pts | +2.7 pts | +4.3 pts |
High school completion is high in Marietta: 96.9% of adults 25 and older have a diploma or equivalent, well above the national rate of 89.3%.
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 Marietta
| Period | Marietta | Iowa | U.S. |
|---|---|---|---|
| 2006–10 | 7.0% | 5.2% | 8.1% |
| 2010–14 | 5.9% | 5.4% | 9.4% |
| 2015–19 | 8.1% | 3.7% | 5.6% |
| 2020–24 | 1.2% | 3.7% | 5.4% |
| Change | −5.8 pts | −1.5 pts | −2.7 pts |
The job market in Marietta has been strong: just 1.2% 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).
Marietta 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| Marietta | 2.46 | 48.0 | 12.6% | 12.5% | 15.5% | 1944 | $927 | 19.2% | 96.9% | 1.2% |
| Albion | 2.40 | 46.7 | 7.7% | 12.2% | 11.9% | 1947 | $823 | 11.5% | 96.8% | 1.7% |
| Minerva | 2.57 | 45.0 | 16.6% | 16.0% | 18.3% | 1941 | $1,015 | 28.0% | 97.4% | 0.3% |
| LaMoille | 2.27 | 44.6 | 12.4% | 24.8% | 13.7% | 1940 | $1,178 | 25.9% | 96.7% | 0.1% |
| Dunbar | 2.24 | 49.6 | 4.0% | 19.6% | 9.3% | 1953 | $897 | 15.7% | 96.6% | 2.6% |
| Marshalltown | 2.65 | 38.2 | 10.9% | 29.5% | 9.3% | 1958 | $1,111 | 21.3% | 82.6% | 4.7% |
| Liscomb | 2.51 | 38.9 | 3.9% | 10.4% | 2.5% | 1942 | $1,024 | 39.9% | 95.8% | 2.0% |
| Clemons | 2.57 | 45.2 | 17.4% | 16.7% | 19.2% | 1941 | $1,019 | 27.7% | 97.5% | 0.2% |
| Green Mountain | 2.22 | 57.1 | 1.3% | 10.7% | 6.0% | 1956 | $908 | 16.8% | 98.8% | 3.3% |
| State Center | 2.38 | 43.0 | 7.7% | 16.0% | 7.4% | 1960 | $819 | 33.2% | 93.6% | 1.5% |
| Haverhill | 2.27 | 48.2 | 2.6% | 13.2% | 5.6% | 1959 | $778 | 26.0% | 97.7% | 5.2% |
All figures 2020–24.
Cities with similar populations: West Lebanon, PA · Concow, CA · Watton, MI · Wattsville, OH · Wawina, MN · Way, MS · Webber, KS · Welch Glade, WV · West Corinth, VT · West End, IL
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 Marietta. 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.
No other site shows detail at this level for free. We are able to keep this site free by receiving a small commission from the referring links on this page. Please share or cite this page if you aren’t able to otherwise support our work.