Arnold, MO Profile: Facts & Data

The City of Arnold had a population of 20,998 as of July 1, 2024. Arnold ranks in the upper quartile for Population Density when compared to the other cities, towns and Census Designated Places (CDPs) in Missouri. See peer rankings below.

The primary coordinate point for Arnold is located at latitude 38.4328 and longitude -90.3776 in Jefferson County. The formal boundaries for the City of Arnold encompass a land area of 11.58 sq. miles and a water area of 0.36 sq. miles. Jefferson County is in the Central time zone (GMT -6).

The City of Arnold has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

Arnold, MO Data & Demographics (As of July 1, 2024)

POPULATION
Total Population	20,998 (100%)
Population in Households	20,979 (99.9%)
Population in Families	16,810 (80.1%)
Population in Group Quarters¹	19 ( 0.1%)
Population Density	1,822
Diversity Index²	26


INCOME
Median Household Income	$77,854
Average Household Income	$91,477
% of Income for Mortgage⁴	18%
Per Capita Income	$37,732
Wealth Index⁵	73
Socioeconomic Status Index⁶	Moderate (55.5)

HOUSING
Total HU (Housing Units)	9,035 (100%)
Owner Occupied HU	6,777 (75.0%)
Renter Occupied HU	1,884 (20.9%)
Vacant Housing Units	374 ( 4.1%)
Median Home Value	$224,555
Average Home Value	$239,782
Housing Affordability Index³	136

HOUSEHOLDS
Total Households	8,661
Average Household Size	2.42
Family Households	5,803
Average Family Size	3.00

NOTES

Group Quarters - a place where people live or stay in a group living arrangement. Includes college residents halls, nursing facilities, military barracks, and correctional facilities.
The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different races or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
The % of Income for Mortgage quantifies the percentage of median household income dedicated to mortgage payments on a home priced at the median value (assuming a 30-year mortgage and a 20% down payment).
The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.
The Socioeconomic Index ranges from zero (lowest relative status) to 100 (highest relative status). This measure quantifies disparities in social position of an area's inhabitants and is built from a broad range of demographic, housing, and socioeconomic inputs. More information on this measure can be found in Esri's SEI tutorial.

Arnold, MO - Peer Comparisons by Rank and Percentile

The table below compares Arnold to the other 1,082 incorporated cities, towns and CDPs in Missouri by rank and percentile using July 1, 2024 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

GROWTH RATE / YEAR	2020-2024	2024-2029
Population	0.16%	0.10%
Households	0.55%	0.46%
Families		0.39%
Median Household Income		3.24%
Per Capita Income		3.05%
Owner Occupied HU		0.92%

Variable Description	Rank	Percentile
Total Population	# 36	97th
Population Density	# 111	90th
Median Household Income	# 266	76th
Housing Affordability Index	# 727	67th
Per Capita Income	# 297	73rd
Diversity Index	# 369	66th

Arnold, MO Profile: Facts & Data

Arnold, Missouri - Basic Facts

Arnold, MO Data & Demographics (As of July 1, 2024)

POPULATION

INCOME

HOUSING

HOUSEHOLDS

GROWTH RATE / YEAR

Arnold, MO - Peer Comparisons by Rank and Percentile

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