Arnold

Population

21,145 (2020)

Type

City

Area

11.52 sq mi (29.85 km²), 0 sq mi water

Median age

38.2

Households

13,454

Persons per household

2.6

Median household income

$64,919

Average house value

$156,000

Businesses

848

Employees

12,292

Government

CITY OF ARNOLD

Government office

2101 JEFFCO BLVD, ARNOLD, MO 63010