Gann Valley Flag

Gann Valley

County Seat:
Yes
Area (mi²):
0.079

Gann Valley is a CDPlocated in Buffalo County, South Dakota. Gann Valley has a 2026 population of 6. It is also the county seat of Buffalo County. Gann Valley is currently declining at a rate of 0% annually and its population has decreased by -45.45% since the most recent census, which recorded a population of 11 in 2020.

6
Total Population
76
Density (mi²)

Gann Valley Population

Gann Valley Population

Year↓
Population
Growth
Annual Change
2026600%
20256120%
20235-7-58.33%
20221200%
20211219.09%
202011-5-31.25%
20191600%
20181611220%
20175-9-64.29%
201614-4-22.22%
20151815.88%
201417213.33%
201315-10-40%
20122517212.5%
2011800%

Median Age

Overall:0 years
Female:0 years
Male:0 years

Gann Valley Adults

There are 6 adults, (0 of whom are seniors) in Gann Valley.

Sex Ratio

Female: 0 (0%)
Male: 6 (100%)

Demographics

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

Population by Race

Race
Population↓
Percentage (of total)
White6100%
Race
Population↓
Percentage (of total)
White6100%

Gann Valley Marital Status

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)