Montana · United States
Sidney population
6,828people · latest figure
Sidney has a population of 6,828, making it the 4769th largest place we list in United States. It is in Montana.
Sidney 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 1289 times its size. Twenty years earlier the World Gazetteer recorded 20,161, a fall of 66%.
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.
Sidney is in Montana, which has 156 recorded places.
Nearby in size
| Place | Region | Population |
|---|---|---|
| Nevada | Iowa | 6,831 |
| Tamaqua | Pennsylvania | 6,829 |
| Middleton | Idaho | 6,828 |
| Roeland Park | Kansas | 6,827 |
| Sequim | Washington | 6,826 |
| Buena Vista | Michigan | 6,816 |
All places in United States → · Montana →
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.