Codington County, South Dakota

County in SD, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

28,767

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

40.4

years ∙ half population younger than 40.4, half older

Diversity Index

18%

chance two random people differ in race and ethnicity

Nativity

1.3%

foreign-born population

98.7%Native

1.3% Foreign-born

Geographic Context

Location, size, and surroundings

About

Codington County is a county in South Dakota, United States.

Location

County in SD, US

Co-ordinates

DEC44.966285° N, 97.198837° W

DMS44° 57′ 58.63″ N, 97° 11′ 55.81″ W

Population Density & area

41.84/sq mi (16.15/km²)

Total Area

717.2 sq mi (1,857.4 km²)

Land Area

687.6 sq mi (1,780.8 km²) · 95.9%

Water Area

29.6 sq mi (76.6 km²) · 4.1%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

50.9% male

Male 50.9%

Female 49.1%

males per 100 females

Codington County 103.8

South Dakota 103.1

United States 98

Nativity

1.3%

foreign-born population

98.7%Native

1.3% Foreign-born

% Foreign-born

Codington County 1.3%

South Dakota 4%

United States 14.1%

Age Distribution

How the population is spread across age groups

Median Age

40.4

years ∙ half population younger than 40.4, half older

Codington County

40.4

South Dakota

United States

38.9

Dependency ratio

dependents per 100 working-age adults

Codington County 74

South Dakota 73

United States 64.4

AGE DISTRIBUTION

Distribution of age group

Median age

	Codington County	South Dakota	United States
Age Group
Children (Under 18)	23%	24.2%	22%
Working age (18-64)	57.4%	57.8%	60.8%
Senior (65+)	19.6%	18%	17.2%
Dependency ratio
Total dependency ratio	74	73	64.4
Child dependency ratio	40	41.9	36.1
Old-age dependency ratio	34	31.1	28.3

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

90.4%

Black

0.7%

Asian

0.6%

Hispanic

3.3%

Other

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

18%

chance two random people differ in race and ethnicity

Codington County 18%

South Dakota 35.3%

United States 61.4%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Codington County population

Racial and ethnic composition — Codington County vs South Dakota vs United States. Source: ACS 2020-2024 5-Year Estimates.
	Codington County	South Dakota	United States
Hispanic or Latino	3.3%	4.8%	19.3%
Mexican	2.5%	2.6%	11.3%
Puerto Rican	0%	0.4%	1.8%
Cuban	0.2%	0.1%	0.8%
Other Hispanic / Latino	0.6%	1.7%	5.5%
Not Hispanic or Latino	96.7%	95.2%	80.7%
One race	93.9%	90.8%	76.4%
White	90.4%	79.8%	57.4%
Black or African American	0.7%	2.1%	11.9%
American Indian and Alaska Native	1.9%	7.1%	0.5%
Asian	0.6%	1.4%	5.9%
Native Hawaiian and Other Pacific Islander	0%	0%	0.2%
Some Other Race	0.4%	0.3%	0.6%
Two or more races (Multiracial)	2.8%	4.4%	4.3%

Household & Families Composition

Household size, type, and family structure

Household structure

58.6% family

Family 58.6%

Non family 41.4%

% family households

Codington County 58.6%

South Dakota 61.3%

United States 64.2%

Average household size

2.25

persons per household

Codington County

2.25

South Dakota

2.39

United States

2.53

Household & Family COMPOSITION

Households

Percentage of Codington County population

	Codington County	South Dakota	United States
Total households	12,526	365,544	129,227,496
Average houshold size	2.25	2.39	2.53
Family households	7,346	224,058	82,990,528
Average family size	2.92	3.05	3.14
Married couple family	5,838	176,597	60,637,388
Other families	1,508	47,461	22,353,140
Male householder	627	17,711	6,572,819
Female householder	881	29,750	15,780,321
Non-family households	5,180	141,486	46,236,968
One-person households	4,108	116,755	37,140,836
Male householder	2,354	57,880	16,871,444
Senior (65+) living alone	858	17,403	5,225,110
Female householder	1,754	58,875	20,269,392
Senior (65+) living alone	985	29,381	10,089,070
Other living arrangements	1,072	24,731	9,096,132

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

13,533

housing units

Codington County 13,533

South Dakota 408,584

United States 143,775,355

Occupancy status

92.6% occupied

Occupied 92.6%

Vacant 7.4%

vacancy rate

Codington County 7.4%

South Dakota 10.5%

United States 10.1%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

73.9%

Single family houses

73.9%

Apartments in multi-unit structures

18.6%

Mobile homes

7.7%

Boat, RV, van, etc

Median Year Built

1978

Half of houses were built before 1978, and half after.

Historic ∙ 1939 or earlier

17.8%

Postwar & mid-century ∙ 1940 - 1969

18%

Late 20th century ∙ 1970 - 1999

37.2%

Modern ∙ 2000 or later

27%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Codington County	South Dakota	United States
Rooms per unit
Median rooms	5.9	5.9	5.5
1–3 rooms	14.8%	13.6%	15.1%
4–6 rooms	44.9%	44.6%	51.6%
7+ rooms	40.4%	41.8%	33.4%
Bedrooms
No bedroom / studio	1.8%	1.9%	2.9%
1 bedroom	9.5%	10.1%	10.9%
2 bedrooms	30.8%	26.4%	25%
3 bedrooms	30.7%	32%	38.7%
4+ bedrooms	27.2%	29.6%	22.4%
At a glance
Median year built	1978	1982	1981
Total housing units	13,533	408,584	143,775,355

Occupancy Profile

Who is inside and how they use it

Homeownership

69.8% owners

Renter-occupied 30.2%

Owner-occupied 69.8%

homeownership rate

Codington County 69.8%

South Dakota 68.6%

United States 65.2%

Average household size

2.44

Owner-occupied

1.82

Renter-occupied

owner-occupied average size

Codington County 2.44

South Dakota 2.54

United States 2.64

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Codington County	South Dakota	United States
Total occupied units	12,526	365,544	129,227,496
Year moved in
2020 or later	25.3%	25.4%	24.8%
2010 to 2019	34.7%	39.7%	39.6%
2000 to 2009	20.7%	16.2%	16.4%
1999 or earlier	19.3%	18.7%	19.1%
Occupants per room
1.00 or fewer	98.2%	97.7%	96.6%
1.01 to 1.50	1.3%	1.6%	2.2%
1.51 or more	0.6%	0.7%	1.2%
Vehicles availability
No vehicles	5.3%	5.2%	8.4%
1 vehicle	25.7%	28.4%	33.1%
2 vehicles	38.9%	36.3%	36.6%
3 or more vehicles	30.1%	30.1%	21.9%
House heating fuel used
Gas	62.7%	63.1%	51.4%
Electricity	35%	32.4%	41.3%
Solar	0%	0%	0.3%
Fuel oil, kerosene etc	0.1%	1.3%	3.9%
All other fuels	1.3%	2.4%	2%
No fuel used	0.9%	0.8%	1.2%
Selected characteristics
Lacking complete plumbing	1%	0.5%	0.4%
Lacking complete kitchen	1.6%	0.9%	0.8%
No telephone service available	0.5%	1.1%	0.9%

Housing Value

What owner-occupied units are worth

Median home value

$237,700

owner-occupied units

Median value(USD)

Codington County

$237,700

South Dakota

$257,400

United States

$332,700

Housing Cost Burden

19.9%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

19.9%

Owners without a mortgage

8.2%

Renters

36.2%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Codington County	South Dakota	United States
Property value
Median Value	$237,700	$257,400	$332,700
Under $100,000	15.2%	16.1%	11.4%
$100,000 - $200,000	24.6%	19.5%	15.8%
$200,000 - $300,000	28.8%	24.4%	17.8%
$300,000 - $500,000	21.6%	26%	26.9%
$500,000 - $1,000,000	9.1%	12.1%	20.9%
$1,000,000 and more	0.7%	1.8%	7.1%
Owner-occupied households
With a mortgage	56.8%	54.5%	60.6%
Without a mortgage	43.2%	45.5%	39.4%
Median monthly owner costs
With a mortgage	$1,526	$1,680	$1,963
Without a mortgage	$538	$617	$638
Gross rent
Median rent	$938	$946	$1,413

Education Profile

How educated is the community and how education pays off

Adults with a college degree

21.4%

of adults 25+ with a bachelor's degree or higher

Codington County 21.4%

South Dakota 31.9%

United States 35.7%

Adults without a high school diploma

6.1%

of adults (25+) without a high school diploma

Codington County 6.1%

South Dakota 6.8%

United States 10.4%

School Enrollment

Who is enrolled in school and at what level

School enrollment

6,477

population (age 3+) enrolled in school

Nursery / Preschool

5.1%

K–12

74.9%

College / Undergraduate

19.3%

Graduate / Professional

0.7%

College-going rate (18-24 yr olds)

39.3%

of 18-24-year-olds in college or graduate school

Codington County

39.3%

South Dakota

35.1%

United States

40.9%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Codington County	South Dakota	United States
Total enrolled (age 3+)	6,477	216,085	80,089,790
Nursery / preschool	5.1%	6.1%	5.7%
K–12	74.9%	73%	67.6%
Kindergarten	5.1%	5.6%	5%
Elementary: Grades 1–4	20.1%	22.3%	19.8%
Elementary: Grades 5–8	25.7%	22.8%	21%
High School: Grades 9–12	24.1%	22.3%	21.7%
College or graduate school	20%	20.9%	26.7%
College, undergraduate	19.3%	17.1%	21%
Graduate, professional school	0.7%	3.8%	5.8%
College-going rate · 18-24 yr olds	39.3%	35.1%	40.9%
School type
Public school	89%	86.9%	82%
Private school	11%	13.1%	18%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

19,626

population 25 years and over

Total adults (25+)

Less than 9th grade

1.3%

9th-12th, no diploma

4.8%

HS graduate

37.5%

Some college no degree

19.3%

Associates degree

15.7%

Bachelors degree

15.7%

Graduate or professional degree

5.7%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

54.7% · 45.3%

9th-12th, no diploma

64.1% · 35.9%

HS graduate

54.8% · 45.2%

Some college no degree

46% · 54%

Associates degree

43.2% · 56.8%

Bachelors degree

46% · 54%

Graduate or professional degree

52.4% · 47.6%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Codington County	South Dakota	United States
Population (25+)	19,626	603,746	230,807,303
Less than 9th grade	1.3%	2.6%	4.7%
9th–12th, no diploma	4.8%	4.2%	5.7%
High school diploma or GED	37.5%	29%	26%
Some college, no degree	19.3%	19.9%	19.1%
Associate's degree	15.7%	12.3%	8.8%
Bachelor's degree or higher	21.4%	31.9%	35.7%
Bachelor's degree	15.7%	21.9%	21.6%
Graduate or professional	5.7%	10%	14.1%
High School or higher	93.9%	93.2%	89.6%

Earnings by education level

percentage as applicable

Median Earnings

$47,498

Median earnings for adults 25+, by level

Less than HS graduate

$31,310

HS graduate

$42,446

Some college or associates

$47,654

Bachelors degree

$57,891

Graduate or professional degree

$71,484

Poverty Rate

1.8%

for ages 25+, with bachelors degree or higher

Less than HS graduate

20.9%

HS graduate

7.9%

Some college or associates

9.3%

Bachelors degree or higher

1.8%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Codington County	South Dakota	United States
Median earnings
Population 25+, with earnings	$47,498	$49,402	$52,696
Less than high school graduate	$31,310	$33,790	$32,485
High school graduate (includes equivalency)	$42,446	$40,544	$40,153
Some college or associate's degree	$47,654	$47,061	$47,260
Bachelor's degree	$57,891	$58,363	$70,044
Graduate or professional degree	$71,484	$72,377	$90,720
Poverty rates
Less than high school graduate	20.9%	28%	24.2%
High school graduate (includes equivalency)	7.9%	13.2%	14.4%
Some college or associate's degree	9.3%	8.5%	9.8%
Bachelor's degree or higher	1.8%	4.2%	4.5%

Insights for Codington County, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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