Arnold, MO
Demographics And Statistics

Demographics | Crime | Cost Of Living
Updated: 2025-10-25

Living In Arnold, Missouri Summary

Life in Arnold research summary. HomeSnacks has been using Saturday Night Science to research the quality of life in Arnold over the past nine years using Census, FBI, Zillow, and other primary data sources. Based on the most recently available data, we found the following about life in Arnold:

  • The population in Arnold is 20,884.

  • The median home value in Arnold is $268,762.

  • The median income in Arnold is $75,194.

  • The cost of living in Arnold is 96 which is 1.0x lower than the national average.

  • The median rent in Arnold is $1,085.

  • The unemployment rate in Arnold is 4.2%.

  • The poverty rate in Arnold is 7.7%.

  • The average high in Arnold is 66.2° and the average low is 46.2°.

Arnold SnackAbility

5
Overall SnackAbility
Jobs
8/10
Housing
8
Affordability
8
Diversity
5
Safety
N/A
Amenities
8.5
Education
7
Commute
5

Arnold, MO Crime Report

Crime in Arnold summary. We use data from the FBI to determine the crime rates in Arnold. Key points include:

  • There were 410 total crimes in Arnold in the last reporting year.

  • The overall crime rate per 100,000 people in Arnold is 1,967.7 / 100k people.

  • The violent crime rate per 100,000 people in Arnold is 105.6 / 100k people.

  • The property crime rate per 100,000 people in Arnold is 1,862.1 / 100k people.

  • Overall, crime in Arnold is -7.15% below the national average.

410
Total Crimes
-7.15%
Below National Average

Crime In Arnold Comparison Table

Statistic Count
Raw
Arnold
/ 100k People
Missouri
/ 100k People
National
/ 100k People
Total Crimes Per 100K 410 1,967.7 2,403.3 2,119.2
Violent Crime 22 105.6 462.0 359.0
Murder 0 0.0 7.8 5.0
Robbery 3 14.4 51.5 61.0
Aggravated Assault 15 72.0 357.5 256.0
Property Crime 388 1,862.1 1,941.2 1,760.0
Burglary 9 43.2 236.3 229.0
Larceny 342 1,641.3 1,306.5 1,272.0
Car Theft 37 177.6 398.4 259.0

Arnold, MO Cost Of Living

Cost of living in Arnold summary. We use data on the cost of living to determine how expensive it is to live in Arnold. Real estate prices drive most of the variance in cost of living around Missouri. Key points include:

  • The cost of living in Arnold is 96 with 100 being average.

  • The cost of living in Arnold is 1.0x lower than the national average.

  • The median home value in Arnold is $268,762.

  • The median income in Arnold is $75,194.

96
Arnold's Overall Cost Of Living
1.0x
Lower Than The National Average

Cost Of Living In Arnold Comparison Table

Living Expense Arnold Missouri National Average
Overall 96 88 100
Services 90 93 100
Groceries 95 96 100
Health 91 91 100
Housing 95 78 100
Transportation 95 90 100
Utilities 101 99 100

Arnold, MO Weather

  • The average high in Arnold is 66.2° and the average low is 46.2°.

  • There are 74.1 days of precipitation each year.

  • Expect an average of 43.2 inches of precipitation each year with 12.4 inches of snow.

StatArnold
Average Annual High66.2
Average Annual Low46.2
Annual Precipitation Days74.1
Average Annual Precipitation43.2
Average Annual Snowfall12.4
66.2°
Average High
74.1
Days of Rain

Arnold, MO Photos

Arnold Water Tower From I North
Source: Public Domain
Greaterstl
Source: Public Domain

Rankings for Arnold in Missouri

Locations Around Arnold

Map Of Arnold, MO

Best Places Around Arnold

1

Waterloo, IL
Population 11,055

2

Columbia, IL
Population 11,063

3

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Population 35,168

4

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Population 30,835

5

Chesterfield, MO
Population 49,591

6

Town and Country, MO
Population 11,605

7

Kirkwood, MO
Population 29,302

8

Glendale, MO
Population 6,111

9

Webster Groves, MO
Population 23,771

10

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Population 8,948

Arnold Demographics And Statistics

Population over time in Arnold

The current population in Arnold is 20,884. The population has increased 0.6% from 2010.

Year Population % Change
2023 20,884 0.2%
2022 20,840 0.2%
2021 20,808 -1.6%
2020 21,144 -0.0%
2019 21,146 0.2%
2018 21,107 0.0%
2017 21,102 -0.4%
2016 21,196 0.3%
2015 21,123 0.5%
2014 21,020 0.4%
2013 20,945 0.4%
2012 20,859 0.3%
2011 20,798 0.2%
2010 20,753 -

Race / Ethnicity in Arnold

White
90.0% (18,789)
African American
0.2% (42)
American Indian
0.0% (3)
Asian
1.0% (218)
Hawaiian
0.0% (8)
Other
0.3% (65)
Two Or More
6.2% (1,300)
Hispanic
2.2% (459)

Arnold is:

  • 90.0% White with 18,789 White residents.

  • 0.2% African American with 42 African American residents.

  • 0.0% American Indian with 3 American Indian residents.

  • 1.0% Asian with 218 Asian residents.

  • 0.0% Hawaiian with 8 Hawaiian residents.

  • 0.3% Other with 65 Other residents.

  • 6.2% Two Or More with 1,300 Two Or More residents.

  • 2.2% Hispanic with 459 Hispanic residents.

Race Arnold MO USA
White 90.0% 76.8% 58.2%
African American 0.2% 11.0% 12.0%
American Indian 0.0% 0.2% 0.5%
Asian 1.0% 2.1% 5.7%
Hawaiian 0.0% 0.1% 0.2%
Other 0.3% 0.4% 0.5%
Two Or More 6.2% 4.4% 3.9%
Hispanic 2.2% 5.1% 19.0%

Gender in Arnold

Female
50.4% (10,532)
Male
49.6% (10,352)
  • Arnold is 50.4% female with 10,532 female residents.

  • Arnold is 49.6% male with 10,352 male residents.

Gender Arnold MO USA
Female 50.4% 50.7% 50.5%
Male 49.6% 49.3% 49.5%

Highest level of educational attainment in Arnold for adults over 25

  • 2.0% of adults in Arnold completed < 9th grade.

  • 7.0% of adults in Arnold completed 9-12th grade.

  • 33.0% of adults in Arnold completed high school / ged.

  • 22.0% of adults in Arnold completed some college.

  • 12.0% of adults in Arnold completed associate's degree.

  • 16.0% of adults in Arnold completed bachelor's degree.

  • 6.0% of adults in Arnold completed master's degree.

  • 1.0% of adults in Arnold completed professional degree.

  • 1.0% of adults in Arnold completed doctorate degree.

< 9th Grade
2.0% (417)
9-12th Grade
7.0% (1,461)
High School / GED
33.0% (6,891)
Some College
22.0% (4,594)
Associate's Degree
12.0% (2,506)
Bachelor's Degree
16.0% (3,341)
Master's Degree
6.0% (1,253)
Professional Degree
1.0% (208)
Doctorate Degree
1.0% (208)
Education Arnold MO USA
< 9th Grade 2.0% 3.0% 5.0%
9-12th Grade 7.0% 6.0% 6.0%
High School / GED 33.0% 30.0% 26.0%
Some College 22.0% 21.0% 19.0%
Associate's Degree 12.0% 8.0% 9.0%
Bachelor's Degree 16.0% 20.0% 21.0%
Master's Degree 6.0% 9.0% 10.0%
Professional Degree 1.0% 2.0% 2.0%
Doctorate Degree 1.0% 1.0% 2.0%

Household Income For Arnold, Missouri

  • 2.6% of households in Arnold earn Less than $10,000.

  • 2.5% of households in Arnold earn $10,000 to $14,999.

  • 8.4% of households in Arnold earn $15,000 to $24,999.

  • 8.1% of households in Arnold earn $25,000 to $34,999.

  • 8.5% of households in Arnold earn $35,000 to $49,999.

  • 19.7% of households in Arnold earn $50,000 to $74,999.

  • 14.4% of households in Arnold earn $75,000 to $99,999.

  • 23.8% of households in Arnold earn $100,000 to $149,999.

  • 7.0% of households in Arnold earn $150,000 to $199,999.

  • 4.9% of households in Arnold earn $200,000 or more.

Less than $10,000
2.6% (53,843)
$10,000 to $14,999
2.5% (52,619)
$15,000 to $24,999
8.4% (175,726)
$25,000 to $34,999
8.1% (168,873)
$35,000 to $49,999
8.5% (178,173)
$50,000 to $74,999
19.7% (411,904)
$75,000 to $99,999
14.4% (301,279)
$100,000 to $149,999
23.8% (497,809)
$150,000 to $199,999
7.0% (146,112)
$200,000 or more
4.9% (102,058)
Income Arnold MO USA
Less than $10,000 2.6% 4.8% 4.9%
$10,000 to $14,999 2.5% 4.0% 3.6%
$15,000 to $24,999 8.4% 7.6% 6.6%
$25,000 to $34,999 8.1% 7.9% 6.8%
$35,000 to $49,999 8.5% 12.2% 10.4%
$50,000 to $74,999 19.7% 17.5% 15.7%
$75,000 to $99,999 14.4% 13.3% 12.7%
$100,000 to $149,999 23.8% 16.9% 17.4%
$150,000 to $199,999 7.0% 7.7% 9.3%
$200,000 or more 4.9% 8.1% 12.6%

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