Arnold

Population: 20,884
Median household income: $75,194
Median home value: $209,700

Located in Jefferson County, Missouri, Arnold is a community with a population of 20,884. At $75,194, its median household income sits below Jefferson County's $80,522.

Between 2019 and 2023, Arnold's population declined 1.2% from 21,146 to 20,884, while its median home value rose 33.1% from $157,600 to $209,700.

85.3% of workers drive to work alone. 78.2% of homes are single-family detached houses.

Demographics

ACS 2019–2023

Population: 20,884
Median age: 39.9 yrs
Median household income: $75,194
Median home value: $209,700
Median gross rent: $1,085
Housing units: 9,202
Homeownership rate: 79.6%
Bachelor's degree or higher: 24.0%
Unemployment rate: 4.2%

Trends

ACS 5-year · 2019–2023

Population

21,14620,884

Median household income

$66,670$75,194

Median home value

$157,600$209,700

Median gross rent

$955$1,085

Year	Population	Median household income	Median home value	Median gross rent
2019	21,146	$66,670	$157,600	$955
2020	21,144	$64,678	$165,700	$958
2021	20,808	$63,755	$168,400	$1,022
2022	20,840	$72,317	$192,000	$1,057
2023	20,884	$75,194	$209,700	$1,085

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 56.4%

5 to 1713.9%

18 to 245.4%

25 to 3417.7%

35 to 4411.5%

45 to 5410.7%

55 to 6415.0%

65 to 7411.1%

75 and over8.3%

	Count	Share
Under 5	1,330	6.4%
5 to 17	2,904	13.9%
18 to 24	1,133	5.4%
25 to 34	3,698	17.7%
35 to 44	2,403	11.5%
45 to 54	2,241	10.7%
55 to 64	3,136	15.0%
65 to 74	2,314	11.1%
75 and over	1,725	8.3%

Race & ethnicity

	Count	Share
White (non-Hispanic)	18,789	90.0%
Black or African American	42	0.2%
American Indian & Alaska Native	3	0.0%
Asian	218	1.0%
Native Hawaiian & Pacific Islander	8	0.0%
Some other race	65	0.3%
Two or more races	1,300	6.2%
Hispanic or Latino (any race)	459	2.2%

Educational attainment (age 25+)

No high school diploma9.0%

High school graduate33.0%

Some college or associate's34.0%

Bachelor's degree16.2%

Graduate or professional degree7.8%

	Count	Share
No high school diploma	1,393	9.0%
High school graduate	5,125	33.0%
Some college or associate's	5,272	34.0%
Bachelor's degree	2,518	16.2%
Graduate or professional degree	1,209	7.8%

Commute to work

Mean travel time to work: 27 min

Drove alone85.3%

Carpooled5.8%

Public transit0.0%

Walked0.7%

Bicycle0.0%

Worked from home8.1%

Other means0.2%

How workers get to work

	Count	Share
Drove alone	9,151	85.3%
Carpooled	619	5.8%
Public transit	0	0.0%
Walked	72	0.7%
Bicycle	0	0.0%
Worked from home	870	8.1%
Other means	19	0.2%

Travel time

	Count	Share
Under 15 min	1,647	16.7%
15 to 29 min	3,527	35.8%
30 to 44 min	2,930	29.7%
45 to 59 min	1,299	13.2%
60+ min	458	4.6%

Households

Average household size: 2.43
Poverty rate: 7.7% (1,595 of 20,688)

	Count	Share
Family households	5,661	66.3%
Nonfamily households	2,872	33.7%

Housing

Median year structure built: 1977

Occupancy

	Count	Share
Occupied	8,533	92.7%
Vacant	669	7.3%

Tenure (of occupied units)

	Count	Share
Owner-occupied	6,794	79.6%
Renter-occupied	1,739	20.4%

1-unit, detached78.2%

1-unit, attached5.8%

2 to 4 units4.4%

5 to 19 units4.2%

20 or more units2.6%

Mobile home & other4.8%

Units in structure

	Count	Share
1-unit, detached	7,197	78.2%
1-unit, attached	536	5.8%
2 to 4 units	401	4.4%
5 to 19 units	384	4.2%
20 or more units	240	2.6%
Mobile home & other	444	4.8%

Geography

Place GEOID: 2901972
Type (LSAD): 25
Land area: 12 sq mi
Water area: 0 sq mi
Center point: 38.4260, -90.3693