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.
Codington County, SD Climate
Codington County, SD has an average annual temperature of 6.2°C (43°F) and receives about 548 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
6.2°C
Avg Temp
548
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -12° / 11° | 14 mm |
| February | -8° / 17° | 12 mm |
| March | -1° / 29° | 30 mm |
| April | 7° / 44° | 49 mm |
| May | 14° / 57° | 70 mm |
| June | 19° / 67° | 96 mm |
| July | 22° / 72° | 76 mm |
| August | 21° / 69° | 70 mm |
| September | 15° / 59° | 52 mm |
| October | 8° / 47° | 46 mm |
| November | -2° / 29° | 23 mm |
| December | -9° / 16° | 10 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Codington County, SD
The most comfortable months to visit Codington County, SD are typically August, July and June, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -17°C low). June is usually the wettest month.
Where to stay near Codington County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.