10th most populous of 66
With 19,907 residents in 2024, Davison County ranks 10th by population among South Dakota's 66 counties and is home to 2.2% of the state's residents.

Davison County has the 10th largest economy in South Dakota ($1.7 billion GDP) and the 11th lowest homeownership rate (61.5%).
Davison County is home to 19,907 people (2024 estimate) on 436 square miles of land. This page brings together official U.S. Census Bureau population estimates since 2000, the components of change—births, deaths and migration—American Community Survey indicators on income, housing, poverty and education, BEA economic accounts and BLS unemployment.
Pick an indicator to see its long-run evolution.
U.S. Census Bureau: intercensal estimates 2000–2009, Vintage 2020 (2010–2019) and Vintage 2024 (2020–2024), July 1.
| Indicator | Value | Year and source |
|---|---|---|
| Population estimate | 19,907 | 2024 · U.S. Census Bureau |
| Population, 2010 Census | 19,504 | 2010 · U.S. Census Bureau |
| Population, 2000 | 18,763 | July 1, 2000 · Census intercensal |
| Change since 2000 | +6.1% | 2000–2024 · Census |
| International migration | +10 | 2024 · Census Vintage 2024 |
| Domestic migration | −46 | 2024 · Census Vintage 2024 |
| Birth rate | 11.4 per 1,000 | 2024 · calculated |
| Death rate | 12.9 per 1,000 | 2024 · calculated |
| Population rank in South Dakota | 10th of 66 | 2024 · calculated |
| Per capita personal income | $72,648 | BEA, 2024 · official |
| Gross domestic product | $1.7 billion | BEA, current dollars, 2024 · official |
| Median household income | $66,208 | ACS 2020–2024 5-year · official |
| Poverty rate | 11.2% | ACS 2020–2024 5-year · official |
| Bachelor’s degree or higher | 22.6% | Age 25+, ACS 2020–2024 5-year · official |
| Foreign-born residents | 2.0% | ACS 2020–2024 5-year · official |
| Median home value | $205,800 | ACS 2020–2024 5-year · official |
| Median gross rent | $847/month | ACS 2020–2024 5-year · official |
| Median age | 39.6 years | ACS 2020–2024 5-year · official |
| Households | 8,899 | ACS 2020–2024 5-year · official |
| Owner-occupied homes | 61.5% | ACS 2020–2024 5-year · official |
Comparable indicators for Davison County, South Dakota and the United States.
| Indicator | County | South Dakota | U.S. | Reference |
|---|---|---|---|---|
| Population change 2020–2024 | −0.2% | +4.3% | +2.6% | Census Vintage 2024 |
| Birth rate (per 1,000) | 11.4 | 12.2 | 10.6 | 2024 |
| Death rate (per 1,000) | 12.9 | 9.4 | 9.1 | 2024 |
| Net migration rate (per 1,000) | -1.8 | 4.1 | 8.2 | 2024 |
| Population density (/mi²) | 45.7 | 12.2 | 96.3 | 2024 |
| Per capita personal income | $72,648 | $75,699 | $73,204 | BEA, 2024 |
| Median household income | $66,208 | $75,081 | $80,734 | ACS 2020–2024 5-year |
| Poverty rate | 11.2% | 11.9% | 12.5% | ACS 2020–2024 5-year |
| Bachelor’s degree or higher | 22.6% | 31.9% | 35.7% | Age 25+, ACS 2020–2024 5-year |
| Foreign-born residents | 2.0% | 4.0% | 14.1% | ACS 2020–2024 5-year |
| Median home value | $205,800 | $257,400 | $332,700 | ACS 2020–2024 5-year |
| Median gross rent | $847/month | $946/month | $1,413/month | ACS 2020–2024 5-year |
| Median age | 39.6 years | 38.0 years | 38.9 years | ACS 2020–2024 5-year |
| Owner-occupied homes | 61.5% | 68.6% | 65.2% | ACS 2020–2024 5-year |
With 19,907 residents in 2024, Davison County ranks 10th by population among South Dakota's 66 counties and is home to 2.2% of the state's residents.
Its population went from 18,763 in 2000 to 19,907 in 2024, a change of +6.1%, compared with +22.3% for South Dakota as a whole.
In the year to July 2024 the county recorded 227 births and 256 deaths, so deaths outnumbered births by 29.
Annual Census estimates since 2000 put the county's highest population at 20,034 in 2016. The 2024 figure is 127 lower.
Davison County has about 45.7 residents per square mile of land, ranking 4th of 66 counties; South Dakota averages 12.2.
With a median household income of $66,208 (ACS 2020–2024 5-year), the county ranks 46th of 66 South Dakota counties; the state median is $75,081.
Its economy produced $1.7 billion of GDP in 2024 (BEA), 10th largest among 66 South Dakota counties.
Real GDP grew 2.4% in 2024, adjusted for inflation (BEA, chained 2017 dollars).