Cortlandt, South Dakota Population 2024

643

Cortlandt is a city located in Brown County and Edmunds County South Dakota. Cortlandt has a 2024 population of 643. Cortlandt is currently growing at a rate of 0.94% annually and its population has increased by 4.38% since the most recent census, which recorded a population of 616 in 2020.

The average household income in Cortlandt is $141,090 with a poverty rate of 1.85%. The median age in Cortlandt is 52.4 years: 38.5 years for males, and 55.9 years for females.

Cortlandt Demographics

According to the most recent ACS, the racial composition of Cortlandt was:

  • White: 97.89%
  • Native American: 2.11%
  • Black or African American: 0%
  • Asian: 0%
  • Native Hawaiian or Pacific Islander: 0%
  • Other race: 0%
  • Two or more races: 0%
Land Area (mi²)
34.3 sq mi
Density (mi²)
18.70/sq mi
Growth Since 2020
4.38% (27)
The current population of Cortlandt, South Dakota is 643 based on our projections of the latest US Census estimates (released May 2024). The last official US Census in 2020 recorded the population at 616.

Population by Race

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Race
Population
Percentage (of total)
White83597.89%
Native American182.11%
Black or African American00%
Asian00%
Native Hawaiian or Pacific Islander00%
Other race00%
Two or more races00%

White

Native American

Black or African American

Asian

Native Hawaiian or Pacific Islander

Other race

Two or more races

Cortlandt Population by Race

Cortlandt Population Pyramid 2024

Cortlandt Median Age

52.4

Total

38.5

Male

55.9

Female

Cortlandt Adults

There are 632 adults, (136 of whom are seniors) in Cortlandt.

Cortlandt Age Dependency

72

Age Dependency Ratio

27.4

Old Age Dependency Ratio

44.6

Child Dependency Ratio

Cortlandt Sex Ratio

Female38545.13%
Male46854.87%

Cortlandt Population by Age

Cortlandt Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All3052.896.43.6
Married2383.111000
Non Family591.5981.418.6
Male82.251000
Female0000

3.01

Average Family Size

2.8

Average Household Size

96.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Cortlandt Households and Families

Male

Female

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Education Attained
Count
Percentage
9th to 12th Grade61.01%
Associates Degree396.57%
Bachelors Degree23339.23%
Graduate Degree559.26%
High School Graduate15526.09%
Less Than 9th Grade00%
Some College10617.85%

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Cortlandt Educational Attainment by Sex (over 25)

Cortlandt Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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Race
Total
High School
Bachelors
White594588288

The highest rate of high school graduation is among white people with a rate of 98.99%.

The highest rate of bachelors degrees is among white people with a rate of 48.48%.

Cortlandt Educational Attainment by Race

All

Male

Female

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Name
Average
Male
Female
Bachelors Degree$46,094$0$48,214
Graduate Degree$110,139$111,250$0
High School Graduate$0$0$5,880
Less Than 9th Grade$0$0$0
Overall$49,464$73,080$45,625
Some College$69,453$115,735$68,359

$49,464

Average Earnings

$73,080

Average Male

$45,625

Average Female

Cortlandt Earnings by Educational Attainment

Cortlandt Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Cortlandt Language

98.65% of Cortlandt residents speak only English, while 1.35% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.35% of the population.

Cortlandt Language

Cortlandt Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White811151.85%

1.85%

Overall Poverty Rate

0.66%

Male Poverty Rate

3.35%

Female Poverty Rate

Poverty in Cortlandt

The race most likely to be in poverty in Cortlandt is White, with 1.85% below the poverty level.

The race least likely to be in poverty in Cortlandt is White, with 1.85% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 0%. Among those working part-time, it was 1.61%, and for those that did not work, the poverty rate was 6.03%.

Cortlandt Poverty

rate

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Rate
Poverty
Less Than 9th Grade100%
Some College4.14%
Bachelors or Greater1.04%
High School0%

Cortlandt Poverty Rate by Education

rate

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Rate
Poverty
Male Employed1.42%
Male Unemployed0%
Female Employed0%
Female Unemployed0%

Cortlandt Poverty Rate by Employment Status and Sex

Cortlandt Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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Name
Median
Mean
Families$115,833$160,313
Households$96,250$141,090
Married Families$108,333$-999,999,999
Non Families-$60,941

mean

median

Income by Household Type

Cortlandt Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

82.4%

Overall Marriage Rate

85.5%

Male Marriage Rate

79.6%

Female Marriage Rate

Cortlandt Married by Age and Sex

male

female

Cortlandt Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 55-64.

Cortlandt Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Cortlandt Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

64

Number of Veterans

59

Male Veterans

5

Female Veterans

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War
Veterans
Vietnam31
First Gulf War20
Second Gulf War5
Korea0
World War II0

Cortlandt Veterans by War

count

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Age Group
Veterans
65 to 7425
35 to 5420
55 to 6411
75+8
18 to 340

Cortlandt Veterans by Age

count

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Name
Veterans
% of Total
White6410.13%

Cortlandt Veterans by Race

Cortlandt Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0%

Veteran Poverty Rate

20.31%

Veteran Disability Rate

Cortlandt Veterans by Education

LaborForceParticipation

63.6%

Labor Force Participation

60.8%

Employment Rate

4.5%

Unemployment Rate

Cortlandt Employment by Age

LaborForceParticipation

Cortlandt Employment by Race

LaborForceParticipation

Cortlandt Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

71.28%

Born in Cortlandt

99.41%

Native Born

0.59%

Foreign Born

0.59%

Non Citizen

0%

Naturalized

Place of Birth

99.41% of Cortlandt residents were born in the United States, with 71.28% having been born in South Dakota. 0.59% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Cortlandt Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202967360.9%
202866760.91%
202766160.92%
202665560.92%
202564960.93%
202464360.94%
202363760.95%
202263160.96%
202162591.46%
202061660.98%
201961060.99%
2018604-10-1.63%
2017614-1-0.16%
2016615-10-1.6%
201562560.97%
2014619-5-0.8%
201362450.81%
2012619-1-0.16%
2011620-5-0.8%
201062500%

Cortlandt Population by Year