Missouri · United States
Arnold population
21,357people · latest figure
Arnold has a population of 21,357, making it the 2099th largest place we list in United States. It is in Missouri.
Arnold holds under a tenth of one per cent of United States's 349,035,494 people. New York City, the largest place we list there, is 412 times its size. Twenty years earlier the World Gazetteer recorded 25,460, a fall of 16%.
The 2005 figure comes from the World Gazetteer archive restored on this site. The two sources may draw the settlement's boundary differently, so treat the change as indicative rather than exact. Why figures differ.
Arnold is in Missouri, which has 518 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Mandan | North Dakota | 21,382 |
| Winchester | Massachusetts | 21,374 |
| Okemos | Michigan | 21,369 |
| East Moline | Illinois | 21,350 |
| West Pensacola | Florida | 21,339 |
| Kinston | North Carolina | 21,337 |
All places in United States → · Missouri →
Figures are the latest available in GeoNames (CC BY 4.0), which draws on national censuses of varying dates — treat them as recent, not same-year. Country totals are UN World Population Prospects 2024 (medium variant) where the UN lists the country separately; the handful it reports under a parent state keep a GeoNames figure and are marked as such. Sources & method.