Arnold, Missouri Population 2023

20,873

Arnold is a city located in Jefferson County Missouri. With a 2023 population of 20,873, it is the 36th largest city in Missouri and the 2220th largest city in the United States.Arnold is currently growing at a rate of 0.02% annually but its population has decreased by -1.28% since the most recent census, which recorded a population of 21,144 in 2020. Spanning over 12 miles, Arnold has a population density of 1,811 people per square mile.

The average household income in Arnold is $75,675 with a poverty rate of 10.45%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Arnold is 40.3 years, 37.8 years for males, and 43.3 years for females.

Arnold Demographics

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

  • White: 93.86%
  • Two or more races: 5.28%
  • Asian: 0.35%
  • Black or African American: 0.28%
  • Native American: 0.16%
  • Other race: 0.08%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Arnold, Missouri is 20,873 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 21,144.

Arnold, Missouri Population 2023

Population by Race

White

Two or more races

Asian

Black or African American

Native American

Other race

Native Hawaiian or Pacific Islander

Arnold Population by Race

Arnold Population Pyramid 2023

Arnold Median Age

40.3

Total

37.8

Male

43.3

Female

Arnold Adults

There are 16,311 adults, (3,763 of whom are seniors) in Arnold.

Arnold Age Dependency

68.5

Age Dependency Ratio

30

Old Age Dependency Ratio

38.5

Child Dependency Ratio

Arnold Sex Ratio

Female10,72950.74%
Male10,41549.26%

Arnold Population by Age

Arnold Renter vs Owner Occupied by Household Type

2.98

Average Family Size

2.46

Average Household Size

74.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Arnold Households and Families

Male

Female

Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Arnold Educational Attainment by Sex (over 25)

Arnold Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among black people with a rate of 50.00%.

Arnold Educational Attainment by Race

All

Male

Female

$43,105

Average Earnings

$53,055

Average Male

$36,149

Average Female

Arnold Earnings by Educational Attainment

Arnold Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Arnold Language

92.77% of Arnold residents speak only English, while 7.23% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 5.38% of the population.

Arnold Language

Arnold Poverty by Race

rate

10.45%

Overall Poverty Rate

6.54%

Male Poverty Rate

10.57%

Female Poverty Rate

Poverty in Arnold

The race most likely to be in poverty in Arnold is Asian, with 60.81% below the poverty level.

The race least likely to be in poverty in Arnold is Hispanic, with 2.53% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.04%. Among those working part-time, it was 9.15%, and for those that did not work, the poverty rate was 14.53%.

Arnold Poverty

Arnold Poverty Rate by Education

Arnold Poverty Rate by Employment Status and Sex

Arnold Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

mean

median

Income by Household Type

Arnold Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

52.0%

Overall Marriage Rate

53.8%

Male Marriage Rate

50.2%

Female Marriage Rate

Arnold Married by Age and Sex

male

female

Arnold Marriage

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

Arnold Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Arnold Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,388

Number of Veterans

1,358

Male Veterans

30

Female Veterans

Arnold Veterans by War

Arnold Veterans by Age

count

Arnold Veterans by Race

Arnold Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

0.58%

Veteran Poverty Rate

28.16%

Veteran Disability Rate

Arnold Veterans by Education

LaborForceParticipation

63.6%

Labor Force Participation

60.7%

Employment Rate

3.3%

Unemployment Rate

Arnold Employment by Age

LaborForceParticipation

Arnold Employment by Race

LaborForceParticipation

Arnold 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

78.41%

Born in Arnold

96.46%

Native Born

4.91%

Foreign Born

2.10%

Non Citizen

2.81%

Naturalized

Place of Birth

96.46% of Arnold residents were born in the United States, with 78.41% having been born in Missouri. 2.10% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Europe.

Arnold Place of Birth

Note: data after 2020 is projected based on recent growth

Arnold Population by Year