Marietta Flag

Marietta

County:
Shelby County
County Seat:
No
Area (mi²):
0.377
State:
Indiana

Marietta is a CDP located in Shelby County, Indiana. Marietta has a 2026 population of 169. Marietta is currently growing at a rate of 6.96% annually and its population has decreased by 0% since the most recent census, which recorded a population of 0 in 2020.

The median age in Marietta is 33.7 years: 21.7 years for males, and 38.1 years for females. For every 100 females there are 120.5 males.

169
Total Population
448
Density (mi²)
11 6.96%
Growth

Marietta Population

Marietta Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026169116.96%
2025158106.76%

Median Age

Overall: 33.7 years
Female: 38.1 years
Male: 21.7 years

Marietta Adults

There are 74 adults, (0 of whom are seniors) in Marietta.

Sex Ratio

Female: 44 (45.4%)
Male: 53 (54.6%)

Demographics

The racial composition of Marietta includes 100% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White97100%
Race
Population ↓
Percentage (of total)
White97100%

Marietta Marital Status

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)