Onaka Flag

Onaka

County:
Faulk County
County Seat:
No
Area (mi²):
0.259
State:
South Dakota

Onaka is a town located in Faulk County, South Dakota. Onaka has a 2026 population of 14. Onaka is currently declining at a rate of 0% annually and its population has decreased by 0% since the most recent census, which recorded a population of 14 in 2020.

The median age in Onaka is 13.5 years: 35.8 years for males, and 1.9 years for females. For every 100 females there are 78.6 males.

14
Total Population
54
Density (mi²)

Onaka Population

Onaka Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
20261400%
20251400%
20241400%
20231400%
20221400%
20211400%
20201400%
201914-1-6.67%
20181500%
20171517.14%
20161400%
20151400%
201414-1-6.67%
20131500%
20121500%
20111500%
20101500%

Median Age

Overall: 13.5 years
Female: 1.9 years
Male: 35.8 years

Onaka Adults

There are 11 adults, (5 of whom are seniors) in Onaka.

Sex Ratio

Female: 14 (56%)
Male: 11 (44%)

Demographics

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

Population by Race

Race
Population ↓
Percentage (of total)
White25100%
Race
Population ↓
Percentage (of total)
White25100%

Onaka 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)