Introduction to Arnold, Missouri

Arnold, Missouri, in Jefferson county, is located 14 miles S of St. Louis, Missouri. Part of the surrounding Saint Louis metro area, Arnold is home to approximately 19,965 residents.

Arnold History

Located in the Saint Louis metro area, the region was named after George Arnold, the city’s first post master. The area was previously known as "Flamm City" and "Maxville." The first European to settle in the region was Jean Baptiste Gamache. Telegraph lines were originally built here after 1850. The city of Arnold was incorporated in 1972.

Arnold and nearby Attractions

  • Museum of Westward Expansion
  • Horseshoe Lake State Fish & Wildlife Area
  • Ulysses S. Grant National Historic Site
  • Missouri Botanical Garden
  • Saint Louis Science Center
  • Illinois Caverns State Natural Area

Things To Do In Arnold

The Campbell House, the Ulysses S. Grant Farm, the Carondelet Historic Center and the Museum of Transportation are all close by. At the Horseshoe Lake State Fish & Wildlife Area-Madison, visitors can enjoy boating, fishing, camping, hiking and picnicking. The Illinois Caverns State Natural Area has caves with rimstone dams, and stalactite and stalagmite formations. The Missouri Botanical Garden, the Sophia M. Sachs Butterfly House and the Saint Louis Zoo are all accessible from .

Arnold Transportation

Flights are available from Lambert-Saint Louis International Airport.

Arnold Higher Education

Saint Louis Community College-Meramec, Webster University and Jefferson College are some of the local colleges and universities.


Total Population 21,020
Male Share of the Population 48.8%
Female Share of the Population 51.2%
Senior Citizens 15.8%
Employed Population 16+ 10,464
Age of the Population 40


% of people married 55%
Average household size 3

Education and Earnings

Population % with Bachelor Degree or Higher 20.2%
Median Earnings25+ $35,788
Median Earnings Without High School Qualification $20,286
Median Earnings With High School Degree $27,761


Median Family Income $64,362
% Above Poverty Level 91.5%
% Below Poverty Level 8.5%

Commute & Sprawl

Average Commute Time 27 minutes
% Working from Home 1.6%
% Walking and Biking to Work 1.1%
% Using Public Transportation 0.4%


People Living Alone 24.3%
Median Gross Rent $856
Median House Value $145,900


Other(often includes Hispanic and African American) 17.5%
US/American 0.1%
English 7.2%
Irish 14.5%

Arnold Almanac

Category Value
Nearest Large City 14 miles S of St. Louis, Missouri
County Jefferson
Metro Area Saint Louis
Standard Zip Codes 63010
Phone Area Codes 636
Time Zone Central (-6 hours from GMT)
Daylight Savings The city observes Daylight Saving Time.
Latitude 38.432
Longitude -90.377

Arnold Climate

Nearest Weather Stations


  • Temp ranges are avg daily min and max for the month
  • Precipitation is rainfall (and rainfall equiv of snowfall)

Station FESTUS
Distance 11.6 miles
Jan Temp 18 to 39 F
Apr Temp 41 to 67 F
Jul Temp 64 to 88 F
Oct Temp 42 to 70 F
Annual Precip 39.9 inches
Distance 14.1 miles
Jan Temp 20 to 38 F
Apr Temp 45 to 66 F
Jul Temp 68 to 89 F
Oct Temp 47 to 69 F
Annual Precip 42.1 inches
Distance 18.9 miles
Jan Temp 17 to 38 F
Apr Temp 43 to 66 F
Jul Temp 67 to 89 F
Oct Temp 43 to 69 F
Annual Precip 38 inches

Neighborhood and Nearby Area Names

According to the US Postal Service, Arnold, its neighborhoods, and/or surrounding areas are also referred to as:

Maxville (63010)

Note that not all alternate names are acceptable for use in US Post Office addresses.

Nearby Cities and Towns

Location Population Median Family Income
Bella Villa 822 $58,148
Crestwood 11,934 $83,576
Fenton 4,037 $104,783
These schools offer particularly quick info upon request, and we have written detailed profiles for each (click school names to see the profiles). Request info from multiple schools, by clicking the Request Info links.
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Arnold High Schools

Serves 1,826 students.
Student/teacher ratio: 18.4

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