Codington County, South Dakota Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 7th-largest in South Dakota
The population of Codington County, South Dakota is 28,556 as of the 2023 American Community Survey, making it the 7th-largest county in South Dakota. The median household income is $65,080, the median home value is $218,000, and the median age is 39.9.
The population of Codington County has grown 7.6% since 2010 (27,212 → 29,278), a +0.52% annualized rate.
28,556
Population
+0.52%
Annual growth
42
People / sq mi
$65,080
Median Income
$218,000
Median Home Value
Codington County covers 688 sq mi of land at 41.5 people per square mile.
About Codington County, SD
Homeownership is the standout figure in Codington County: 67.4% of homes are owner-occupied, close to the national rate. With 28,556 residents, Codington County is a county in South Dakota. That makes it one of the ten largest counties in South Dakota in the country, at #7 by population.
Household earnings are middling, with a median of $65,080 — below the US median of $78,538. Poverty is relatively low for US counties at 6.4%, below the national 12.4%. The typical home is valued at $218,000, with typical rent around $901.
Degree attainment is mid-range for US counties: 20.9% of adults hold a four-year degree, below the national 35.0%. About 6.0% of the workforce is home-based, below the national 14.0%, and the average commute runs about 15 minutes each way.
Codington County Population History (2010-2024)
The county of Codington County had a population of 27,212 in 2010 and 29,278 in 2024, a 7.6% growth over 14 years. The peak was 29,278 in 2024. Average annual growth rate: 0.53%.
29,278
Population (2024)
27,212
Population (2010)
29,278
Peak (2024)
0.53%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 27,212 |
| 2011 | 27,431 |
| 2012 | 27,629 |
| 2013 | 27,864 |
| 2014 | 27,958 |
| 2015 | 27,907 |
| 2016 | 28,069 |
| 2017 | 28,219 |
| 2018 | 28,098 |
| 2019 | 28,092 |
| 2020 | 28,355 |
| 2021 | 28,492 |
| 2022 | 28,756 |
| 2023 | 28,952 |
| 2024 | 29,278 |
Race & Ethnicity
| White | 91.3% |
| Black or African American | 1.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 3.3% |
| Two or More Races | 0.0% |
Age & Sex
39.9
Median Age
49.2%
Female
50.8%
Male
19.0%
Age 65+
Age Distribution
Children (under 15): 19.0% · Seniors (65+): 19.0%
Income & Poverty
| Median household income | $65,080$-7,341 vs state |
| Mean household income | $84,357 |
| Per-capita income | $37,308 |
| Poverty rate | 6.4%-1.0% vs state |
| Unemployment rate | 1.4% |
| Employment-to-population | 67.0% |
Top Industries by Employment
The largest employment sector in Codington County is professional & business services, accounting for 19.5% of workers.
How residents commute
0.5%
Drive alone
1.2%
Carpool
84.1%
Public transit
6.0%
Work from home
14.9 min
Avg commute
Housing
$218,000$-18,800 vs state
Median home value
$901
Median rent
67.4%
Homeownership rate
13,388
Total housing units
92.3%
Occupied
7.7%
Vacant
32.6%
Renter-occupied
Social & access
93.3%
With health insurance
92.0%
With broadband internet
27.4%
Foreign-born
8.0%
Veterans (18+)
11.0%
With a disability
96.9%
Speak language other than English at home
Education
92.4%
High School+
20.9%
Bachelor's+
Largest cities in South Dakota
Other counties in South Dakota
Part of South Dakota
Metro areas in South Dakota
County rankings
Frequently Asked Questions
Codington County, South Dakota has a population of 28,556 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 7th-largest county in South Dakota. Population density is 42 people per square mile.
The population of Codington County has grown 7.6% since 2010 (27,212 → 29,278), a +0.52% annualized rate.
The median household income in Codington County, South Dakota is $65,080, with mean (average) household income of $84,357 and per-capita income of $37,308. 6.4% of residents live below the federal poverty level.
In Codington County, the largest racial and ethnic groups are White (91.3%), Hispanic or Latino (3.3%), Black or African American (1.0%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Codington County, South Dakota is 39.9 years. Residents are 49.2% female and 50.8% male.
The median home value in Codington County is $218,000 and median monthly rent is $901. 67.4% of occupied housing units are owner-occupied. The county has 13,388 total housing units, 7.7% of which are vacant.
The largest employment sector in Codington County, South Dakota is professional, scientific, and management services, employing 19.5% of workers. The unemployment rate is 1.4%.
Sioux Falls is among the largest cities associated with Codington County, South Dakota, with a population of 197,642.
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Statewide data for South Dakota
Population, race, income, age, and trends across South Dakota
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.